By installing, accessing, or using the ZapVox extension ("Service"), you agree to these Terms of Service ("Terms"). If you do not agree with any part of these Terms, do not install or use the Service.
Current status: ZapVox is in public BETA. This means new features may be added, modified, or removed from time to time, and occasional instability may occur. By using the Service you acknowledge and accept that it is under continuous improvement.
Language: These Terms are published in Portuguese and English. In case of any discrepancy between the versions, the Portuguese version (zapvoxia.com.br/termos) prevails.
Last updated: July 18, 2026
2. Service Description
ZapVox is a browser extension for Google Chrome and Microsoft Edge that allows you to transcribe, translate, summarize, and analyze audio messages on WhatsApp Web using artificial intelligence.
The Service offers:
Cloud transcription: Audio-to-text conversion using AI (Whisper) processed by ZapVox's cloud infrastructure. Audio is processed and immediately discarded — it is never stored on our servers.
Bring Your Own Key (BYOK) transcription: The ability to use your own API keys (Groq or OpenAI) for cloud transcription, without consuming the daily limits of ZapVox plans.
Translation and summarization (Pro): Translation and summarization of transcribed text using cloud services.
Sentiment analysis (Pro): Identification of the predominant emotional tone of a transcribed audio, displayed in an indicator separate from the transcription itself.
Auto-transcription: Automatic transcription of new received audio (requires explicit consent).
3. Plans, Pricing and Usage Limits
3.1 Free Plan
Up to 10 cloud transcriptions per day and up to 15 minutes of transcribed audio per day
BYOK (your own Groq or OpenAI key) available with no limit imposed by ZapVox
Transcription only (translation, summaries and sentiment analysis are Trial/Pro exclusive)
Watermark on copied or sent transcriptions
3.2 Trial (7 days)
Automatically activated on first login, no credit card required, no charge at the end
Up to 15 cloud operations per day (transcription, translation, summary and sentiment combined) and up to 30 minutes of transcribed audio per day
Access to all Pro features during the trial
Automatically reverts to Free plan after expiration, with no charge
3.3 Pro Plan (Monthly, Annual or Biennial)
Transcription, translation, summaries and sentiment analysis: up to 150 operations per day PER feature type (each type has its own counter) and up to 150 minutes of transcribed audio per day (fair use — see Section 3.4)
Removable watermark
Pricing: $3.99/month, $27.99/year, or $47.99/biennial (one-time payment, no auto-renewal on biennial). In Brazil, the equivalent BRL prices shown on the plans page apply (R$29.90/month, R$199.90/year, R$299.90/biennial)
Payment processed by Stripe
3.4 Usage limits and fair use
The daily limits described in Sections 3.1 to 3.3 apply to usage of ZapVox's cloud infrastructure and reset at midnight, Brasília time (America/Sao_Paulo time zone).
The fair-use policy exists to protect the quality, stability and sustainability of the Service for all users: cloud transcription has a real cost per minute of processed audio, and atypical consumption patterns would degrade the experience for other subscribers. Under normal individual use, you are unlikely to reach these limits.
When a daily limit is reached, the corresponding feature becomes unavailable until the counter resets (midnight, Brasília time) — nothing extra is ever charged;
Operations performed with your own key (BYOK) do not consume the limits above (see Section 6);
Limits are not cumulative: unused daily quota does not carry over to the next day.
Changes to limits: if we ever need to reduce the limits of any plan, we will communicate the change with reasonable advance notice (via notice in the extension, on zapvoxia.com.br and/or by e-mail) before it takes effect. Limit increases or improvements may be applied immediately. For already-paid subscriptions, any relevant limit reduction entitles you to cancel with a proportional refund of the unused period.
Transparency: with BYOK (your own Groq/OpenAI key), ZapVox imposes no usage limit — only your API provider's conditions and costs apply. The limits in this section apply only to operations processed by ZapVox's cloud infrastructure.
4. Account and Authentication
Some features require login (Google, Microsoft or e-mail) for authentication. When creating an account, you agree to provide accurate information and maintain the security of your credentials.
ZapVox uses OAuth authentication (Google/Microsoft) or e-mail code, managed by Supabase Auth. We do not have access to your password.
Individual, non-transferable account: your ZapVox account is personal, individual and non-transferable. It is intended for use by a single person. Sharing access credentials, assigning, renting or reselling account access to third parties is prohibited. Account sharing or simultaneous use by multiple people violates these Terms and may lead to suspension or termination of the account, as per Section 12 — whenever possible, with prior notice so you can remedy the situation.
4.1. One active browser per account
To ensure the individual nature of the account and prevent credential sharing, ZapVox maintains only one active browser per account at a time. This verification is performed on our servers and applies to all account-based features subject to usage limits (transcription, translation, summarization and message scheduling, among others).
When you sign in to your account on a new browser or device, that one becomes the active browser, and the others are automatically deactivated.
The deactivated browser displays a clear on-screen notice, with the option to resume use immediately via the "Use here" button, without signing in again. You may switch between your own devices as often as you wish.
No local data is deleted on deactivated browsers: your scheduled messages, reminders and settings remain saved and are merely paused until you reactivate that browser.
Simultaneous use of the same account across more than one browser, device or by more than one person — including in corporate environments, by teams or by multiple employees — is not permitted and violates these Terms, subjecting the account to the measures in Section 12.
In short: it's one account per active browser. Switching between browsers and devices is allowed (as often as you like); what is not allowed is keeping them active at the same time on the same account. This limitation exists to prevent fraud and abuse through shared accounts.
Each person using the Service must have their own account. Companies interested in use by multiple employees must purchase one account per user or get in touch through the channel in Section 15.
If you need to keep more than one browser active at the same time on the same account (for example, for teams or companies), get in touch at [email protected] to learn about our special or custom plans (for example, an add-on per additional browser — terms on request).
5. Acceptable Use
You agree to use ZapVox responsibly and legally. It is prohibited to:
Use the Service to transcribe audio without the knowledge or consent of conversation participants when required by law
Resell, sublicense, or redistribute the Service or any part of it
Reverse engineer, decompile, or disassemble the Service
Use the Service for any illegal or unauthorized purpose
Attempt to bypass usage limits, authentication systems, or protection mechanisms
Share or transfer your account or BYOK keys with third parties
Use your account simultaneously on more than one browser or device, or by more than one person, contrary to Section 4.1
Use message scheduling for bulk sending, spam, unsolicited marketing, chain messages, sales automation at scale, or any practice prohibited by WhatsApp/Meta's terms and policies
Send messages to recipients who have not consented to receive them, where such consent is required by applicable law
Circumvent, disable, tamper with or defraud the Service's sending safety limits (minimum interval between sends, timing variation, and hourly, daily and weekly caps)
Use the Service in a manner inconsistent with WhatsApp/Meta's Terms of Service and policies
6. Bring Your Own Key (BYOK)
The Bring Your Own Key (BYOK) feature allows you to use your own API keys for Groq or OpenAI services. When using this functionality:
BYOK operations use YOUR key and YOUR provider account — ZapVox imposes no usage limit on them (they do not consume the daily limits in Section 3)
You are responsible for your API keys and for the costs charged by the provider (Groq offers a free tier; OpenAI charges per use)
Your keys are encrypted locally (AES-GCM 256-bit) and never transmitted to our servers
ZapVox is not responsible for costs incurred from BYOK key usage with the provider
You must comply with the Terms of Service and technical limits of the respective providers (Groq, OpenAI)
7. Intellectual Property
ZapVox, including its source code, design, icons, and documentation, is owned by Diegomaier Nunes Neri and is protected by copyright law.
The transcriptions, translations, and summaries generated from YOUR audio content remain your property. ZapVox does not claim rights to the content you process through the Service.
8. Disclaimer of Warranties
The Service is provided "as is" and "as available," without warranties of any kind, express or implied. We do not guarantee that:
Transcriptions will be 100% accurate (quality depends on audio clarity, language, and model used)
The Service will be available uninterrupted or error-free
The Service will be compatible with future updates to WhatsApp Web or Chrome
That WhatsApp/Meta will not apply limitations, suspensions or blocks to your account as a result of your use — a decision that is exclusively Meta's and outside our control (Section 8.1)
Important Notice: Transcription accuracy varies based on audio quality, accents, background noise, and language. Do not use ZapVox transcriptions as the sole reference for critical decisions without manual verification.
8.1. Message scheduling and risk of being blocked by WhatsApp
ZapVox is an independent product, with no affiliation, sponsorship, partnership or endorsement whatsoever from WhatsApp LLC or Meta Platforms, Inc. Your relationship with WhatsApp is governed exclusively by Meta's own terms and policies, compliance with which is your sole and entire responsibility.
The message scheduling feature was designed with user safety as a priority: it operates through WhatsApp's own official chat mechanism (click to chat), is intended for individual, one-off sending, performs no bulk sending, and applies, by default and non-disableable, technical safety limits — a minimum interval between sends, randomized timing variation, and hourly, daily and weekly caps. These measures reduce the risk but do not eliminate it, and constitute no promise, warranty or assurance of any outcome.
Responsibility for use and risk of blocking: the decision to limit, suspend, block or ban a WhatsApp account is an act exclusive to Meta Platforms, Inc., made according to its own unilateral and undisclosed criteria, lying entirely outside ZapVox's control and sphere of action. You are solely and exclusively responsible for the content, recipients, frequency, volume and lawfulness of the messages you schedule or send through the Service, as well as for obtaining recipients' consent where required by applicable law — including Brazil's Law No. 13,709/2018 (LGPD) — and for complying with WhatsApp/Meta's terms and policies. To the maximum extent permitted by applicable law, and except for liability that the law does not allow to be excluded or limited, ZapVox and its developer shall not be liable for limitations, suspensions, blocks or bans applied by a third party (WhatsApp/Meta) to your account by reason of the manner, volume, content or purpose of your use of the Service. By enabling message scheduling, you declare that you are aware of and agree to this risk and knowingly and informedly assume it.
9. Limitation of Liability
To the maximum extent permitted by law, ZapVox and its developer shall not be liable for direct, indirect, incidental, special, or consequential damages arising from your use of or inability to use the Service, including but not limited to:
Loss of data or transcriptions
Errors or inaccuracies in transcriptions, translations, or summaries
Service interruptions caused by WhatsApp Web or Chrome updates
Costs incurred from using BYOK keys with third-party APIs
Limitations, suspensions, blocks or bans applied to your WhatsApp account by Meta/WhatsApp by reason of your use of the Service, as set out in Section 8.1
Temporary unavailability of features on browsers deactivated due to the one-active-browser-per-account limit, as set out in Section 4.1
The limitations in this Section apply to the maximum extent permitted by applicable law and do not exclude liability that Brazilian law — in particular the Consumer Protection Code (Law No. 8,078/1990) — does not allow to be excluded or limited.
10. Payments, Cancellation and Refunds
Pro plan payments are processed by Stripe. ZapVox does not store credit card data.
Monthly and Annual subscriptions renew automatically at the end of each cycle; the Biennial plan is a one-time payment with no auto-renewal
Self-service cancellation: you can cancel at any time, on your own, via the dashboard at zapvoxia.com.br/dashboard, the extension popup or the Stripe billing portal — no penalty, no lock-in
10.1 Right of Withdrawal and Refund Policy
Right of Withdrawal (Brazilian Consumer Code, Art. 49): as this is an online purchase, you may withdraw from it within 7 (seven) calendar days of the purchase, with a full refund of any amount paid, no justification needed. This right is guaranteed by Brazilian consumer protection law.
In addition to the right of withdrawal, we practice the following refund policy:
Monthly plan: upon cancellation, you receive a proportional refund for the unused days of the current cycle;
Annual and Biennial plans:full refund if cancellation is requested within 30 (thirty) calendar days of purchase; after that, Pro access remains active until the end of the paid period;
Trial: the 7-day trial is free, requires no card and generates no charge.
Whichever condition is most favorable to you — the right of withdrawal or the policy above — always prevails. Refunds are processed by Stripe and credited to the original payment method, usually within 5-10 business days depending on your bank or card issuer.
We may update these Terms periodically. Significant changes will be communicated via notification in the extension, on the website and/or by e-mail. Continued use of the Service after posting changes constitutes acceptance of the new Terms.
In particular, changes that reduce usage limits or features of paid plans will be communicated with reasonable advance notice before taking effect, as per Section 3.4. If you do not agree with a change, you may cancel your subscription as per Section 10.
12. Suspension and Termination
We may suspend or terminate your access to the Service in case of violation of these Terms — including account sharing (Section 4), attempts to bypass usage limits, or fraudulent/abusive use of the Service. Whenever reasonably possible, you will be notified in advance and given the opportunity to remedy the situation before any definitive suspension.
You may stop using the Service at any time by uninstalling the extension and, if you are a subscriber, cancelling as per Section 10. Suspension or termination does not affect the refund rights in Section 10.1 or your consumer rights.
Upon termination, the sections on Intellectual Property, Disclaimer of Warranties, Limitation of Liability, and Governing Law remain in effect.
13. Governing Law and Jurisdiction
These Terms are governed by the laws of the Federative Republic of Brazil, including the Brazilian Consumer Protection Code (Law No. 8,078/1990) for consumer relationships.
For consumer relationships in Brazil, you are entitled to bring any claim in the courts of your own domicile (CDC, art. 101, I). We will always seek to resolve any issue amicably through [email protected] before any formal measure.
ZapVox is available to users internationally and complies with applicable laws in different jurisdictions. However, Brazilian law governs the interpretation and enforcement of these Terms.
14. Data Protection and LGPD Compliance
ZapVox is committed to protecting your personal data and complies with the General Data Protection Law (Lei Geral de Proteção de Dados - LGPD) in Brazil and internationally applicable data protection regulations including GDPR (General Data Protection Regulation) for users in the European Union.
We implement appropriate technical and organizational measures to protect your data, including encryption of BYOK keys and secure transmission of cloud-based operations. Audio is processed and immediately discarded — the content of your audios and conversations is never stored on our servers.
For detailed information about how we collect, process, and protect your data, please review our Privacy Policy.
15. Privacy
The use of ZapVox is also governed by our Privacy Policy, which describes how we collect, use, and protect your data.