# Squint Sub — 90s daily eye self-check

> 90s daily eye self-check (iPhone/iPad app by jiahao zhang.)

- Source: https://appshunter.io/ios/app/squint-sub/id6780193600 (this page in markdown: same URL + `.md`)
- Developer: [jiahao zhang](https://appshunter.io/developer/1895708572)
- Category: Health & Fitness, Medical
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-06-18
- Data updated: 2026-07-22
- User reviews in markdown: https://appshunter.io/ios/app/squint-sub/id6780193600/reviews.md

## What is Squint Sub?

Squint is a 90-second daily wellness self-check for people who stare at screens all day. It's not a medical diagnostic tool — it's a habit-forming routine. Catch screen fatigue before it catches you.

WHAT SQUINT DOES
• A 90-second daily eye-care routine you can actually keep
• Distance-corrected vision self-check using the TrueDepth camera — the letters size themselves to the right distance, so the screen does the math for you
• A 20-20-20 enforcer that gently nudges you with a Live Activity: every 20 minutes, look 20 feet away for 20 seconds
• Blue-light exposure trends from your own screen-time patterns
• An optional symptom journal and a streak you'll want to keep

PRIVATE BY DESIGN
• No account, no sign-in
• No backend, no analytics, no third-party SDKs, no ads
• Your face is used only to measure distance — the camera image and face mesh are never saved and never leave your device
• Everything is stored on-device; Plus adds end-to-end encrypted iCloud sync

FOUR QUICK SELF-CHECKS
• Distance acuity (Sloan letters)
• Astigmatism fan dial
• Contrast sensitivity (grey-only, Pelli-Robson style)
• Near vision (Jaeger), with the phone held at a steady reading distance

Every result is framed against your own baseline and ends with "consider checking with an optometrist." Squint never diagnoses, treats, or names a condition.

MEMBERSHIP
• Free: one daily distance self-check
• Pro: all four self-checks, the 20-20-20 enforcer, blue-light trends, symptom journal, widgets, 30-day history
• Plus: Apple Watch quick-test, Family Sharing for up to 5, encrypted iCloud sync, CSV export, and an on-device weekly Ergonomics Plan

Squint is a wellness self-check, not a medical device. It does not diagnose, treat, or cure any condition. For any vision concern, consult an optometrist.


Terms of Use (EULA): https://leexuanxuan95-dev.github.io/squint-ios/eula.html
Privacy Policy: https://leexuanxuan95-dev.github.io/squint-ios/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro (Monthly) | $4.99 | per month |
| Pro (Yearly) | $29.00 | per year |
| Plus (Monthly) | $8.99 | per month |
| Plus (Yearly) | $59.00 | per year |



## Version history (last 1 release)

### 1.0 — 2026-06-18

No release notes.

## More apps by jiahao zhang

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- [Phase: Perimenopause & HRT](https://appshunter.io/ios/app/phase-perimenopause-and-hrt/id6765830533)
- [Rehearsal: Interview Prep](https://appshunter.io/ios/app/rehearsal-interview-prep/id6765836387)
- [Cleanup AI: Remove Anyone](https://appshunter.io/ios/app/cleanup-ai-remove-anyone/id6766029237)

All apps by jiahao zhang: https://appshunter.io/developer/1895708572

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-22.*