Kallen vs Posture Reminder
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Kallen
Read full descriptionHide full description
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 โ and a 10-minute daily plan aimed at the two or three links that are actually holding you back. MEASURED, NEVER GUESSED โข Full posture scan from front, side and back โ every angle read for you โข Range-of-motion tests through the camera: no tape measure, no guesswork โข 34 functional tests for strength, balance and symmetry โข Feet, knees and your desk setup too โ the whole chain, not just the spine YOUR BODY, IN 3D โข A living twin that mirrors your own alignment โข Animated stories show what your pattern is doing to the rest of you โข Your measurements pinned to the muscles they came from A COACH THAT REMEMBERS EVERYTHING โข Every scan, test and conversation builds one Movement Profile โข Patterns and left-right asymmetries the eye simply cannot catch โข 89 exercises, plus routines shaped around your body โข Mobility Snacks โ 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. Nothing you enter is tied to your identity, and it all lives in the app on your phone. The AI features are the exception, and you choose them. To build your plan, read your scans and answer you in chat, the Kallen app sends the data listed on the app's consent screen to Google LLC (Gemini API), which processes it for us and never trains its models on it. Photos are compressed first, we keep no copy, and you can switch AI off any time in Profile โ System & subscription โ the routine, exercises, timers and journal keep working without it. Kallen is an education and coaching app, 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
Posture Reminder
Read full descriptionHide full description
Your neck hurts because you sit still for hours โ not because you don't know what to do about it. Knowing isn't the problem. Remembering is. Fix Posture builds a daily routine of 15 physiotherapy-grade neck, shoulder and upper-back movements, and spreads it across your own desk hours. Eight reminders a day by default, roughly one every 75 minutes. Tap a reminder and the movement starts. An illustrated character performs it while a soft tone marks every second of the hold, so you can close your eyes and follow the sound. Nothing to read, nothing to work out. Tell it where it hurts, when you're at a desk, and how many reps you want. Tomorrow's routine is different from today's. Rest days don't break your streak, and a calendar shows every month you've built. Everything stays on your phone. No account, no sign-up, no tracking, and it works offline. FREE 3 movements and one reminder a day. FIX POSTURE PRO All 15 movements, the full eight-a-day schedule, and your complete history. Weekly or yearly, with a 7-day free trial. Cancel any time. โ Apple Terms of Use apply: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ https://mosoajans.com/terms-of-use.html https://mosoajans.com/privacy-policy.html
Screenshots
Verdict
Kallen and Posture Reminder are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Kallen sells 2 in-app purchases, starting at $16.99 per month and Posture Reminder sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly weekly. Both last shipped on October 24, 2026.
| Parameter | Kallen | Posture Reminder |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 16.4 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 116 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Kacper Lewandowski | Furkan Alcik |
In-app purchases
Kallen
- Pro Monthly$16.991 Month
- Pro Yearly7 Days trial$100.991 Year
Posture Reminder
- Weekly$4.997 Days
- Yearly7 Days trial$14.991 Year
Questions
Is Kallen free?
Is Posture Reminder free?
Do Kallen or Posture Reminder have ads?
Which is updated more often, Kallen or Posture Reminder?
Other comparisons















