Last updated: October 6, 2026
Voicepaper for iPhone, iPad and Android ("the app") is provided by Lemon LLC (shown as Lemon App LLC on Google Play). This page explains what information the app handles and why, followed by the terms of use. Where the iOS and Android apps differ, this page says so. For questions, use the in-app support or email umekun123@gmail.com.
Privacy Policy
Your reading content
Text you import, playlists, reading positions, bookmarks, markers and settings are stored on your device. Playback and audio file creation with the device voice, and text recognition, run on your device. The body of your texts is never sent to analytics or error reports (for titles and other details, see "Analytics and error reports").
If device backup or device transfer is turned on, supported data is backed up and restored according to your device and account settings (iCloud or computer backups on iOS, Google Account backup on Android; AI voice audio generated on iOS is excluded). Items in Trash are deleted automatically after 30 days, or earlier if you delete them permanently. Deleting the app removes the data stored on your device. On iOS, however, some information kept in the Keychain, such as tokens for connected services, may remain on the device after the app is deleted.
AI features
When you use AI Voice or AI Translation (including automatic translation when you open a text, if you turn it on), the text needed for processing (for AI Translation, also the title) is sent through Voicepaper's server to OpenAI (the company behind ChatGPT) or xAI. ChatGPT voices and AI Translation use OpenAI's API, and Grok voices use xAI's API. Neither OpenAI nor xAI uses the text sent through these APIs, or the generated results, to train AI models; each may keep requests for up to 30 days to monitor for abuse. The app also sends its installation ID (a random ID created by the app) and the information needed to verify your subscription (see "Purchases") to Voicepaper's server. Voicepaper's server does not store the text, the translation or the generated audio; it records usage such as the credits used. Generated audio is stored on your device for repeat playback. See the AI Feature Privacy Policy for details.
Importing from other services and the web
When you connect Dropbox, Instapaper or Evernote, or import a web page, a text from Aozora Bunko or a pixiv work, the app communicates directly with that service or website to retrieve what you choose. When a web page is displayed, it also loads resources from other companies, as in a regular browser. When you sign in to Instapaper on iOS, the authorization code passes through a relay page on voicepaperapp.com so that it can be returned to the app. Sign-in information for connected services is stored on your device. Files on your device or in cloud storage (for example, Google Drive) are opened through the system file picker. These services handle your data under their own policies.
Purchases
Voicepaper Plus and Voicepaper AI are purchased and paid for through the App Store on iOS and through Google Play on Android. The app and Voicepaper's server never receive your payment card details.
To unlock features and manage AI credits, the app sends purchase information and its installation ID to Voicepaper's server.
iOS: the signed transaction information issued by the App Store (including the product, the transaction ID and the original transaction ID), sent when you use AI features and when the app checks your AI credits or offers. The server checks Apple's signature. The app attaches its installation ID to purchases as the App Store account token.
Android: the product and the purchase token. The server verifies them with Google Play and acknowledges the purchase.
Voicepaper's server may also receive notifications from Apple and Google about subscription changes such as renewals, refunds and cancellations. For each subscription, the server records the product and plan, its status, the AI credits used, related dates, refund or cancellation details, and whether you have seen or acted on AI notices in the app. Records are identified by the App Store original and latest transaction IDs on iOS, and on Android by the Google Play order ID and a one-way hash of the installation ID or of the purchase token.
On iOS, AI features use Apple's App Attest so that Voicepaper's server can confirm that requests come from the genuine app. The server does not store this information.
Analytics and error reports
To improve the app, we use Mixpanel for usage analytics and Sentry for crash and error reports. Both receive app interactions (for example, which screens and features are used), the app and OS versions, the device model and other device information, diagnostics, and the installation ID. The installation ID is the same one used for support (Intercom) and purchase records. This data is sent automatically while you use the app. Purchase events include a one-way hash of the transaction so that the same purchase is not counted twice. No text, titles, web addresses, file names, search terms, email address or purchase tokens are sent.
Android: We do not use your IP address to estimate your location for analytics.
iOS: Mixpanel estimates your approximate location, such as country and city, from your IP address. Sentry records your IP address. When the system terminates the app, the battery level and free storage are also sent.
Support
In-app help and feedback use Intercom. The messages, contact details and attachments you choose to send are used to answer you. Your email address is never sent automatically.
Android: when you open help or send feedback, the app registers you as an anonymous Intercom user and sends the app version, OS version, device model, language and plan status.
iOS: after launch, the app automatically registers a user with Intercom, identified by the installation ID, and updates the information periodically: plan status, app and OS versions, device model, language and region, answers to the first-launch questions, usage time, the voice you use, the attributes shared with analytics, your AI plan and credits, and the identifier of your AI subscription record.
To deliver replies, a push notification token (Firebase Cloud Messaging on Android, Apple Push Notification service on iOS) is registered with Intercom when notifications are allowed. On Android 12 and earlier, notifications are allowed unless you turn them off. On iOS, the token is registered if you allow notifications when asked after sending a message. You can turn notifications off in your device settings.
Other services
Help videos and AI voice samples are downloaded from Voicepaper's content server. As with any download, your IP address and basic app information reach that server.
Android: Google ML Kit performs text recognition and language identification on your device. Google may collect technical information such as device details, performance and errors; see Google's ML Kit data disclosure. The model for recognizing vertical Japanese text is downloaded from GitHub the first time you use that feature. Google Play provides in-app updates and in-app reviews.
iOS: text recognition, language identification, playback with the device voice (including Personal Voice) and aligning AI voice audio with the text run on your device using Apple's frameworks. To check for updates, the app looks up its information on the App Store of the country matching your language. The App Store provides in-app reviews.
Device permissions
The app asks for access to the camera (text recognition), photos (text recognition from photos; on iOS, access to the photo library) and notifications (reminders such as the end of a trial, and support replies) when you use these features.
What we do not do
We do not sell personal information, show ads, use the advertising ID or track you across other companies' apps or websites. The app does not access your location, contacts, messages or microphone. There is no Voicepaper account to create.
Retention and deletion
Data on your device can be deleted in the app or by deleting the app (for the iOS Keychain, see "Your reading content").
Purchase and AI credit records are kept to provide purchased features, prevent duplicate use, verify subscriptions and answer support requests. They are not deleted automatically after a fixed period, and cancelling a subscription does not delete them.
For security and troubleshooting, Voicepaper's server logs basic information about each request, such as the time, the type of request, the result and the country. IP addresses, device information and IDs are logged only as one-way hashes.
Analytics, error reports, and support conversations and attributes are kept by Mixpanel, Sentry and Intercom. The app has no function that deletes these records together.
For questions about your data, including deletion, contact us in the app or at umekun123@gmail.com. We will identify the records concerned and explain what can be deleted and what must be kept.
Subscriptions
Prices, periods, usage limits and any free trial are shown on the purchase screen. Voicepaper Plus and Voicepaper AI are separate subscriptions, and an AI plan requires an active Plus subscription. Subscriptions renew automatically unless cancelled. You can usually keep using a subscription until the end of the paid period after cancelling. Deleting the app does not cancel a subscription.
iOS: payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the end of the current period. You can manage and cancel subscriptions in Settings > [your name] > Subscriptions. Refunds follow Apple's policies.
Android: to cancel, open Subscriptions in Google Play with the Google Account used for the purchase. Refunds follow Google Play's policies and applicable law.
Changes
When this policy changes, we will update this page and the date above.
Terms of Use
YOUR USE OF THE SERVICE AND THE PURCHASE AND USE OF ANY PRODUCTS OR SERVICES ARE ALL AT YOUR SOLE RISK. THE APP IS PROVIDED AND PRODUCTS ARE SOLD ON AN "AS IS" AND "AS AVAILABLE" BASIS.