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  • SyncMouth: English Pronounce screenshot 1
  • SyncMouth: English Pronounce screenshot 2
  • SyncMouth: English Pronounce screenshot 3
  • SyncMouth: English Pronounce screenshot 4

About SyncMouth: English Pronounce

Pronunciation is fixed with your mouth, not your ears. SyncMouth reads how your mouth moves through the front camera, combines it with speech assessment, and scores your pronunciation from both sides — the sound and the shape. One phoneme at a time, until your mouth moves like a native speaker's. ■ What makes SyncMouth different - See your mouth: Face tracking captures how your lips, jaw and mouth move while you speak, in real time. You can see exactly where you differ from a native speaker, instead of just being told "that doesn't sound right." - Scored on sound AND shape: Speech assessment and mouth-shape assessment are combined into one score, so you find the cause an audio-only app can never show you. - Built up from phonemes: You start from phonemes, the smallest units of English sound, not from full sentences. Clear one and the next unlocks, so you always know what to work on next. - Native model videos: Every phoneme comes with a video of a native speaker's mouth plus hints about tongue and lip position, so you know exactly what to copy. - Real words, real scores: After each phoneme you practice words containing that sound and get a score, so progress is a number, not a guess. ■ Made to keep you practicing - Streaks that record every day you show up - A lives system that gives your daily practice a rhythm - Leaderboards to compete with other learners - Three game modes: Word Practice, a 30-second Time Attack, and a three-life Flawless mode ■ Who it is for - Learners who keep getting corrected but do not know how to fix it - Learners who found audio-only pronunciation apps not enough - Anyone preparing for a speaking test or a conversation lesson - Parents supporting a child learning phonics ■ Before you start - Requires an iPhone with face tracking (front camera) and a microphone - The app uses your camera and microphone while you practice. Mouth-shape data is numeric; facial images themselves are not stored or transmitted - Core features are free. Some content is available through in-app purchases Start today, and change your pronunciation from the mouth up. Terms of Use: https://syncmouth.com/terms/ Privacy Policy: https://syncmouth.com/privacy/ Support: https://syncmouth.com/contact/

What’s new

Version 1.0.3 · Updated October 22, 2026

Improved scoring in Time Attack and Flawless Challenge, and words finished right before time runs out are now scored. Also fixed an issue where the face could not be detected on some devices.

App privacy

The developer, SyncMouth Labs, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Usage Data: Product Interaction
  • Purchases: Purchase History
  • Contact Info: Email Address, Name
  • User Content: Photos or Videos, Audio Data, Other User Content
  • Identifiers: User ID, Device ID

Used for: Analytics, App Functionality

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