NextTongue
Privacy policyLast updated August 5, 2026

Practice is personal.

This policy explains how NextTongue handles information on this website and in the planned NextTongue iPhone app. The guiding rule is simple: collect less, keep learning content off developer-operated servers, and make the limits clear.

1. Scope and current status

This Privacy Policy applies to nexttongue.com and the NextTongue iPhone app when it becomes publicly available. NextTongue is the product name used by Hongyu Zhang, an individual developer and operator. In this policy, “NextTongue,” “we,” “us,” and “our” refer to Hongyu Zhang.

NextTongue is currently in development. Features described here reflect the planned first release and will be updated if the product’s actual data practices change.

Important distinction

NextTongue does not operate its own language-processing server. The app coordinates language capabilities provided by the user’s iPhone. Apple system services may process information locally or through Apple’s network services, depending on the device, settings, installed resources, and Apple’s service behavior.

2. This website

The first version of this website does not include account registration, payment, advertising, marketing forms, or behavioral profiling. We do not place our own advertising cookies or add third-party marketing trackers.

The website is delivered through Cloudflare. Like most internet infrastructure providers, Cloudflare may process standard technical request information such as IP address, request time, browser information, and requested URL to deliver and protect the site. Cloudflare handles that information under its own terms and privacy documentation.

If privacy-friendly site analytics are added later, this policy will be updated before those analytics are enabled.

3. Learning data stored by the app

The planned first release stores the information needed to organize learning on the current iPhone. This may include:

  • the short native-language sentences you choose to practice;
  • the corresponding US English target sentences;
  • completion counts, necessary match scores, and review dates;
  • the selected US English system voice identifier;
  • content-free capability status and fixed diagnostic error codes.

These learning records remain in the app’s protected storage on the iPhone where they were created. NextTongue does not send sentences, target translations, transcripts, recordings, handwriting, match results tied to sentences, or learning history to a developer-operated server.

Speech and handwriting

Audio used for a current speech-recognition attempt is held only as needed for that attempt and is not retained as a learning record by NextTongue. A current transcript is used to show and calculate the match result, then cleared when that result state ends. NextTongue does not obtain or store the original pen strokes entered through the iPhone system handwriting keyboard.

4. Apple system language services

Translation, speech recognition, speech synthesis, and handwriting input are provided by iPhone system capabilities. Depending on the iPhone, iOS version, region, settings, installed language resources, and network state, Apple may perform some processing on the device or through Apple-operated services.

NextTongue does not replace those capabilities with a developer-selected translation, speech, or handwriting provider. Apple’s handling of information is governed by Apple’s applicable privacy terms and system settings.

5. Subscriptions and purchases

Subscriptions are planned to be purchased and managed through Apple’s App Store using StoreKit. NextTongue may process the minimum verified subscription information needed to decide whether learning access is active, such as product identifier, entitlement status, purchase or expiration time, refund or revocation status, and fixed transaction diagnostics.

Subscription information is kept separate from learning content. NextTongue does not use a sentence, recording, transcript, handwriting entry, or learning-history identifier to recognize a subscriber.

Apple processes App Store accounts, payment details, purchase records, and refund requests under Apple’s terms. NextTongue does not receive an Apple Account password, full payment-card information, or two-factor authentication code.

6. Diagnostics and support

The first production release is not planned to include an unreviewed third-party analytics SDK. Permitted diagnostics are limited to content-free information such as app version, iOS version, broad device model, language code, operation stage, duration, count, and a fixed error code.

Support may ask for basic device, app-version, error-code, and subscription-status information. Please do not send learning sentences, target English sentences, transcripts, recordings, handwriting, learning history, passwords, verification codes, payment details, or signed transaction data.

7. Retention, backup, and deletion

Learning records remain on the current iPhone until you delete a sentence, delete all learning data in the app, or delete the app. The first release does not provide learning-data cloud backup, sync, export, migration, or cross-device recovery.

Changing devices can mean losing learning records

Deleting the app, losing the iPhone, reinstalling, or changing devices may permanently remove learning records. Restoring an eligible Apple subscription restores access only; it does not restore learning records.

Deleting learning data in the app does not delete Apple’s App Store purchase history or subscription records. Those records are controlled by Apple.

8. Security

NextTongue is designed to use protected iPhone app storage, exclude learning records from app-managed cloud backup, avoid putting learning content in ordinary logs or filenames, clear temporary recognition data, and cover learning content when the app enters the background.

No storage or transmission method is absolutely secure. We maintain safeguards appropriate to the information and update this policy if the product’s security or data flow changes materially.

9. Your choices

  • You choose the sentence you enter and may delete it later.
  • You may delete all NextTongue learning records stored on the current iPhone.
  • You control relevant Apple permissions and system settings.
  • You can manage or cancel a subscription through your Apple Account.
  • You may contact us with a privacy question without sending learning content.

Because NextTongue does not maintain an account or developer-operated copy of your learning records in the planned first release, we generally cannot retrieve, export, or restore those records for you.

10. Adults only

NextTongue is intended for people age 18 or older and is not directed to children. It is not offered in the App Store Kids Category.

11. Changes to this policy

We may update this policy to reflect product, legal, or operational changes. The “Last updated” date at the top identifies the current version. Material changes will be presented through an appropriate website or in-app notice before or when they take effect.

12. Contact

Operator: Hongyu Zhang, individual

For privacy questions, email support@nexttongue.com with the subject “Privacy question.” Support is provided in English.

Do not include learning content, recordings, transcripts, handwriting, passwords, payment information, or signed transaction data in your message.