Legal
Effective: July 2, 2026
These Terms of Service ("Terms") are a legally binding agreement between you and Savy Surge ("DuoAccent," "we," "us," or "our") governing your access to and use of the DuoAccent mobile application, website at duoaccent.com, and all related services (collectively, the "Service").
Acceptance is by clickwrap. When you create an account, you will be presented with a checkbox — "☐ I have read and agree to the Terms of Service and Privacy Policy" — that you must actively tick before your account is created. Your agreement is logged server-side with a record of who agreed, when, and to which version of these Terms. If you do not tick the checkbox, you cannot create an account or use the personalised features of the Service. Merely browsing duoaccent.com does not constitute agreement.
Eligibility — you must be 18 or older. By creating an account you represent and warrant that you are at least 18 years of age and have the legal capacity to enter into a binding contract in your jurisdiction. We do not knowingly permit anyone under 18 to create an account or use the Service. If we discover that a user is under 18, we will terminate the account and delete associated personal data.
Authority to bind. If you are using the Service on behalf of a business, organisation, or other legal entity, you represent that you have authority to bind that entity to these Terms, in which case "you" refers to that entity.
These Terms, together with our Privacy Policy (incorporated by reference) and any supplemental terms presented at registration or in-app (including purchase terms), constitute the entire agreement between you and DuoAccent concerning the Service and supersede all prior agreements, understandings, and representations. If any provision of these Terms is found unlawful or unenforceable, that provision will be enforced to the maximum extent permissible and the remainder will remain in full force and effect.
DuoAccent is an AI-powered accent-training application designed to help non-native English speakers improve their pronunciation and spoken clarity. The Service includes structured pronunciation drills organised by difficulty tier, real-time acoustic scoring of your spoken recordings, personalised coaching feedback generated by AI, progress tracking and gamification features (streaks, XP, leaderboard), baseline and periodic check-in recordings to measure long-term improvement, and a web-accessible demo available without account registration.
Educational tool only — not speech therapy, clinical advice, or any regulated service. Accent scores, phoneme feedback, and coaching notes are generated entirely by AI models and are provided for educational and entertainment purposes only. They do not constitute professional speech therapy, clinical linguistic assessment, communication coaching, or any regulated health or professional service. Results may vary significantly between users, native languages, and recording conditions. You should not rely on DuoAccent's output as a sole or definitive measure of your pronunciation proficiency. Consult a qualified speech-language pathologist for any therapeutic or clinical needs.
No accuracy guarantee. AI scoring models are imperfect. Scores and feedback may contain errors, omissions, or inaccuracies. Acoustic conditions (background noise, microphone quality, device hardware) materially affect results. DuoAccent makes no warranty that scores are accurate, complete, or suitable for any particular purpose.
Certain features may be designated "Beta." Beta features are experimental, may be modified, limited, suspended, or discontinued at any time without notice, and may not meet the same reliability standards as production features.
To access personalised features you must create an account using one of the supported authentication methods: Sign in with Apple, Sign in with Google, or email magic link. You agree to provide accurate, complete, and current information and to keep that information updated.
You are solely responsible for maintaining the confidentiality of your account and for all activity that occurs under it. You agree to notify us immediately at bash@duoaccent.com if you suspect unauthorised access to your account. DuoAccent will not be liable for any loss or damage arising from your failure to safeguard your account credentials.
You may hold only one active account. Creating multiple accounts to circumvent rate limits, subscription enforcement, or any other restriction is a material breach of these Terms.
You may access and use the Service solely for personal, non-commercial educational purposes unless you have entered into a separate written agreement with DuoAccent authorising other use.
You agree not to:
Any content you submit must not contain hate speech, threats, illegal content, content that infringes third-party intellectual property rights, or content that otherwise violates applicable law.
5.1 Your Ownership. You retain all ownership rights in the audio recordings and other personal content you submit to the Service ("User Content"). DuoAccent does not claim ownership of your voice or recordings.
5.2 How Your Audio Is Processed. When you record audio through the Service, your recordings are transmitted to and processed by our scoring pipeline, which may include our self-hosted accent-scoring engine and third-party AI and speech-analysis service providers. Certain recordings — such as baseline and check-in recordings used to track your progress over time — are stored in your per-user storage folder in Firebase Storage, protected by security rules that restrict access to your authenticated session. Voice recordings and data derived from them (including acoustic feature vectors, phoneme scores, and transcription text) may be used to provide, operate, and improve the Service, including to develop and refine our speech and accent models. For full details on how we handle personal data, see our Privacy Policy.
5.3 Licence to DuoAccent. By submitting User Content and accepting these Terms, you grant DuoAccent a non-exclusive, worldwide, royalty-free, sublicensable licence to: (a) receive, transmit, process, and store your audio through our scoring pipeline and third-party AI and speech-analysis service providers for the purpose of generating pronunciation scores and coaching feedback; (b) store baseline, check-in, and other recordings in your per-user storage folder for progress tracking, longitudinal comparison, and in-app playback to you; (c) retain acoustic feature vectors, phoneme scores, transcription text, and other data derived from your recordings for displaying your performance history and generating future coaching; and (d) use your recordings and derived acoustic data to develop, train, validate, and improve our speech-scoring and accent-analysis models, including by sharing data with sub-processors as identified in our Privacy Policy.
This licence does not give DuoAccent the right to sell your recordings to unaffiliated third parties for their own independent commercial purposes unrelated to providing or improving the Service. You may stop providing recordings at any time. You may also request deletion of your stored recordings at any time by emailing bash@duoaccent.com. We cannot remove your voice from models that have already been trained — that is a technical reality of how machine-learning models work — but we will delete your stored recording files upon a verified request and exclude them from future training runs.
5.4 Retention and Deletion. We retain voice recordings and derived data for as long as reasonably necessary to provide and improve the Service, including to develop and refine our speech and accent models. When you delete your account, your profile, scores, and progress data are deleted. You may request deletion of stored voice recordings at any time — whether or not you have deleted your account — by emailing bash@duoaccent.com; we will process verified requests within a reasonable time. Pseudonymised performance data (aggregate scores, XP totals, anonymised drill completion records from which you cannot reasonably be re-identified) may be retained for product improvement regardless of account deletion.
5.5 Biometric Privacy Jurisdictions. Residents of jurisdictions with biometric privacy laws — including Illinois (Biometric Information Privacy Act, 740 ILCS 14/1 et seq.) and Texas (Capture or Use of Biometric Identifier Act, Tex. Bus. & Com. Code Ch. 503) — will receive jurisdiction-specific written disclosures compliant with applicable law before any covered collection of biometric data begins. Your acceptance of these Terms, together with any required written disclosure provided to you at the time of collection, constitutes a written release under those statutes where applicable law requires one.
DuoAccent offers a free tier and one or more paid subscription tiers ("DuoAccent Pro"). Paid subscriptions unlock additional features as described in the app at the time of purchase. Feature availability is subject to change in accordance with §14.
Purchase channels. Subscriptions may be purchased through:
Auto-renewal. Subscriptions automatically renew at the end of each billing period (monthly or annual, as selected) at the then-current price unless you cancel before the renewal date:
Cancellation takes effect at the end of the current billing period. You retain access to paid features through the end of any period for which you have already paid.
Refunds. DuoAccent does not control refund eligibility for purchases made through the Apple App Store or Google Play Store — direct all in-app refund requests to the applicable store:
For purchases made through the DuoAccent website (Dodo Payments), refund requests may be submitted to bash@duoaccent.com within 14 calendar days of the charge date and will be evaluated in accordance with applicable consumer law in your jurisdiction.
Price changes. We reserve the right to change subscription prices. For Apple App Store and Google Play subscriptions, the applicable store will notify you of price changes per its own policy, and your consent may be required before the new price takes effect. For website subscriptions (Dodo Payments), we will provide at least 30 days' notice by email before any price increase takes effect.
Failed payments. If a renewal payment fails, your subscription may be downgraded to the free tier. DuoAccent is not responsible for any loss of access to paid features due to a failed payment.
Taxes. You are responsible for all applicable taxes in your jurisdiction. Where required by law, applicable taxes will be added at checkout.
DuoAccent offers a free tier with access to a subset of features. Free-tier access is provided at our discretion and may be modified, restricted, or discontinued at any time. Free-tier users are subject to rate limits and usage caps as displayed in the app.
During any beta period, access to the Service — including paid features — may be provided free of charge or at a discounted rate. Such access is provided "as is" and does not carry any commitment to continued pricing or feature availability. Beta participants who join our waitlist may receive early pricing when paid plans launch; we will provide reasonable notice before any charges begin.
The Service — including its software, source code, algorithms, scoring models, branding, visual design, drill content, coaching scripts, and all associated intellectual property — is owned by DuoAccent or its licensors and is protected by copyright, trade secret, trademark, and other applicable laws. You receive no ownership interest in any part of the Service.
Subject to your compliance with these Terms, DuoAccent grants you a limited, non-exclusive, non-transferable, revocable licence to download and use the app on your personal device(s) solely for the purposes described in these Terms. This licence does not include any right to sublicense, resell, modify, adapt, translate, create derivative works from, reverse-engineer, or otherwise exploit the Service.
If you provide suggestions, ideas, or other feedback regarding the Service ("Feedback"), such Feedback is non-confidential and becomes our sole property. You assign to DuoAccent all right, title, and interest in and to the Feedback, and we may use, incorporate, and exploit it for any purpose without restriction, attribution, or compensation to you.
You may not assign or transfer your rights or obligations under these Terms without DuoAccent's prior written consent. DuoAccent may assign these Terms in connection with a merger, acquisition, or sale of substantially all of its assets, with notice to you.
The Service integrates with third-party platforms and services. Your use of those services is governed by their own terms and privacy policies, independent of DuoAccent. Key third-party services include:
A full list of sub-processors and their roles is provided in our Privacy Policy. DuoAccent is not responsible for the practices, content, or availability of any third-party service. The Service may contain links to third-party websites provided for convenience only; DuoAccent does not endorse and has no control over those sites.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT ANY WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. DUOACCENT EXPRESSLY DISCLAIMS ALL WARRANTIES, INCLUDING BUT NOT LIMITED TO:
The Service does not constitute professional speech therapy, clinical linguistic assessment, or any regulated health service, and no such warranty is given or implied. Some jurisdictions do not allow the exclusion of implied warranties; in those jurisdictions the above exclusions apply to the fullest extent permitted by law.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW:
(a) IN NO EVENT SHALL DUOACCENT, ITS OFFICERS, DIRECTORS, EMPLOYEES, CONTRACTORS, AGENTS, LICENSORS, OR SUCCESSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, PUNITIVE, OR EXEMPLARY DAMAGES (INCLUDING LOSS OF PROFITS, LOSS OF DATA, LOSS OF GOODWILL, BUSINESS INTERRUPTION, OR COST OF SUBSTITUTE GOODS OR SERVICES), HOWEVER CAUSED AND UNDER ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY, OR OTHERWISE, EVEN IF DUOACCENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
(b) DUOACCENT'S TOTAL CUMULATIVE LIABILITY TO YOU FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE SHALL NOT EXCEED THE GREATER OF: (i) THE TOTAL AMOUNT YOU PAID TO DUOACCENT IN THE TWELVE (12) MONTHS IMMEDIATELY PRECEDING THE EVENT GIVING RISE TO THE CLAIM; OR (ii) USD $100.
These limitations apply whether the claim is based on warranty, contract, tort, product liability, statutory claim, or any other legal theory. Some jurisdictions do not allow the limitation of certain damages; in those jurisdictions the above limitations apply to the fullest extent permitted by law. Nothing in these Terms limits DuoAccent's liability where limitation is prohibited by applicable law, including in cases of death or personal injury caused by negligence, fraud, or fraudulent misrepresentation.
You agree to defend, indemnify, and hold harmless DuoAccent and its officers, directors, employees, contractors, agents, licensors, and successors from and against any claims, liabilities, damages, losses, costs, and expenses (including reasonable attorneys' fees) arising out of or in connection with:
DuoAccent reserves the right, at its own expense, to assume exclusive defence and control of any matter otherwise subject to indemnification by you, and you agree to cooperate with DuoAccent's defence of that claim.
By you. You may stop using the Service at any time and delete your account through the account settings in the app or by emailing bash@duoaccent.com.
By DuoAccent. DuoAccent may suspend or terminate your account and access to the Service at any time, with or without notice, for: a material or repeated breach of these Terms; conduct that DuoAccent reasonably believes poses a legal, security, or reputational risk to DuoAccent or other users; required action under applicable law or at the direction of a governmental authority; or any other reason at DuoAccent's discretion, provided that DuoAccent will endeavour to provide reasonable advance notice where practicable. If your account is terminated due to your breach, any paid subscription may be forfeited without refund to the extent permitted by applicable law and the applicable store's refund policy.
Effect on data. Upon account deletion or termination, your profile, preferences, scores, progress, and personal account data will be deleted. Stored voice recordings are retained as described in §5.4; you may request deletion of stored recordings at any time by emailing bash@duoaccent.com. Pseudonymised aggregate performance data from which you cannot reasonably be re-identified may be retained for product improvement. Subscription management following termination is handled by the applicable store or Dodo Payments per their own policies.
Survival. Sections 5.1, 5.3 (to the extent necessary to retain pseudonymised data and already-trained models), 5.4, 5.5, 8, 10, 11, 12, 13, 14, 15, and 16 survive termination of these Terms.
We may update these Terms from time to time. When we make material changes we will: (a) update the "Effective" date at the top of this page; (b) provide notice via in-app notification and/or email to your registered address at least 14 days before the change takes effect (or 30 days where required by applicable law); and (c) for changes that affect your substantive rights require your affirmative acceptance rather than relying on continued use as consent.
If you do not agree to updated Terms, you must stop using the Service before the effective date. Continued use of the Service after the effective date constitutes acceptance of the revised Terms only for changes that are not material to your rights and for which the required advance notice has been given.
These Terms and any dispute arising out of or relating to the Service are governed by the laws of India, without regard to its conflict-of-law rules.
Users outside India. Nothing in this Section limits the mandatory consumer-protection rights you hold under the laws of your country or state of residence (including, where applicable, the EU/UK GDPR, the UK Consumer Rights Act 2015, and U.S. state privacy and biometric laws). Where mandatory local law gives you the right to bring proceedings in — or have your claim governed by the law of — your place of residence, this Section does not remove that right.
Informal resolution first. Before initiating formal proceedings, you agree to contact us at bash@duoaccent.com with a written description of the dispute, the relief sought, and your contact information. We will attempt to resolve the dispute informally within 30 days of receipt. This step is a condition precedent to the arbitration below.
Arbitration. Subject to the mandatory local rights described above, any dispute, claim, or controversy arising out of or relating to these Terms or the Service that is not resolved informally shall be referred to and finally resolved by arbitration under the Arbitration and Conciliation Act, 1996, as amended, by a sole arbitrator appointed by Savy Surge. The seat and venue of arbitration shall be in India and the language of the arbitration shall be English. The arbitrator's award shall be final and binding on the parties, and each party shall bring claims only in its individual capacity and not as a plaintiff or class member in any purported class or representative proceeding.
Courts & exceptions. Subject to the arbitration agreement above, the courts of India shall have exclusive jurisdiction. Notwithstanding that agreement, either party may (a) bring an individual claim in a court of small causes or equivalent small-claims forum, and (b) seek urgent interim or injunctive relief from a court of competent jurisdiction in India to prevent the actual or threatened infringement, misappropriation, or violation of intellectual-property rights, confidential information, or data-security obligations. Claims of this kind are not subject to arbitration.
Mass or coordinated arbitration. If twenty (20) or more arbitration demands of a similar nature are filed by or with the coordinated assistance of the same or related counsel, the demands shall be administered in sequential batches of no more than ten (10) at a time (the first batch serving as bellwether test cases), and arbitration fees shall be assessed per batch rather than per individual demand. This process is intended to promote efficient resolution and neither expands nor waives any party's substantive rights.
Time limit for claims. To the extent permitted by applicable law, any claim or dispute arising out of or relating to the Service or these Terms must be filed within one (1) year after the cause of action arose; otherwise it is permanently barred. This limit does not apply where a longer period is required by mandatory local law.
Questions about these Terms, data deletion or erasure requests, or legal notices should be directed to:
DuoAccent Legal — Savy Surge
Savy Surge
Email: bash@duoaccent.com
Website: duoaccent.com
For privacy requests — including data access, correction, erasure of stored voice recordings, or other data rights — under GDPR, CCPA/CPRA, or other applicable privacy law, please email bash@duoaccent.com with the subject line "Privacy Request." Our Privacy Policy explains our full data practices, including the sub-processors we use and how we handle stored voice recordings.
