# Kallen – AI Mobility — Posture scan & daily fixes

> Posture scan & daily fixes (iPhone/iPad app by Kacper Lewandowski.)

- Source: https://appshunter.io/ios/app/kallen-ai-mobility/id6788652029 (this page in markdown: same URL + `.md`)
- Developer: [Kacper Lewandowski](https://appshunter.io/developer/6788652031)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.4 · 110 MB
- Languages: American English, Polish
- Released: 2026-08-24
- Data updated: 2026-10-08
- User reviews in markdown: https://appshunter.io/ios/app/kallen-ai-mobility/id6788652029/reviews.md

## What is Kallen?

Most mobility apps hand you a stretch list. Kallen measures you first.

Three photos. A few tests in front of the camera. From those, Kallen builds a 3D twin that stands the way you stand — and a 10-minute daily plan aimed at the two or three links that are actually holding you back.

MEASURED, NEVER GUESSED
• Full posture scan from front, side and back — every angle read for you
• Range-of-motion tests through the camera: no tape measure, no guesswork
• 37 functional tests for strength, balance and symmetry
• Feet, knees and your desk setup too — the whole chain, not just the spine

YOUR BODY, IN 3D
• A living twin that mirrors your own alignment
• Animated stories show what your pattern is doing to the rest of you
• Your measurements pinned to the muscles they came from

A COACH THAT REMEMBERS EVERYTHING
• Every scan, test and conversation builds one Movement Profile
• Patterns and left-right asymmetries the eye simply cannot catch
• 89 exercises, plus routines shaped around your body
• Mobility Snacks — one-minute resets that undo the last stretch of sitting

WHY TARGETED WINS
Stretching a bit of everything spreads your effort thin. The return is in the few
links that actually give way. Finding them takes measurement.

PRIVATE BY DESIGN
No account. No sign-up. Your data stays on your phone, and photos are read for the
analysis only — never stored in the cloud.

Kallen is education and coaching, not a medical device. It does not diagnose
or treat. If pain is severe or worsening, see a qualified health professional.

Subscription unlocks unlimited coaching, analyses and the full plan. Auto-renews
until cancelled; manage in your App Store settings.
Terms: https://runposture-api.vercel.app/legal/terms
Privacy: https://runposture-api.vercel.app/legal/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Yearly | $100.99 | per year |
| Pro Monthly | $16.99 | per month |



## Version history (last 5 releases)

### 1.1.3 — 2026-09-28

• Redesigned buttons with a softer, tactile feel
• Smoother transitions when you start or end your work day
• Cleaner progress rings and refreshed badges
• Fixed the medium home-screen widget when your plan has many exercises

### 1.1.2 — 2026-09-24

Small fixes

### 1.1.1 — 2026-09-22

A new launch screen

### 1.1 — 2026-09-15

• App renamed to Kallen (previously PostureFix)
• New app icon
• Light theme. The app has a light look now and follows your device — Light / Dark / Match device lives in Profile.

### 1.0 — 2026-08-24

No release notes.

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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 2026-10-08.*