# Posture vs Rebird

The clearest difference is review sentiment: Posture at 77% against Rebird's 33%. Rebird's advantage is in-app purchases (none vs 10) and iOS requirement (9.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Posture sells 10 one-off in-app purchases. Rebird asks for nothing beyond the download.

Posture ships an update every 6 weeks, Rebird every 5 weeks. The most recent releases landed on October 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Posture | Rebird |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (34 ratings)](https://appshunter.io/ios/app/posture-back-and-core-workout/id1134923920/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | **77.3% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 168 MB | 47 MB |
| Requires iOS | 17.0 | **9.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Alexander Senin](https://appshunter.io/developer/697788524) | [Viacheslav Babii](https://appshunter.io/developer/1747898491) |

## What reviewers say

### Posture

[App page](https://appshunter.io/ios/app/posture-back-and-core-workout/id1134923920)

Improve your posture and build a stronger back with this 8-week training program. Featuring over 20 functional exercises with video instructions, you can train anywhere without equipment. Earn rewards and create custom workouts to stay motivated.

**Highlights:** 8-week posture straightening program, Over 20 functional exercises, Detailed video instructions, No athletic equipment needed, Workout constructor, Rewards and achievements, Health app integration

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy coffee for us | $0.99 | one-time |
| Week 1 - Unlock now | $0.99 | one-time |
| Week 2 - Unlock now | $0.99 | one-time |
| Week 3 - Unlock now | $0.99 | one-time |
| Week 4 - Unlock now | $0.99 | one-time |
| Week 5 - Unlock now | $0.99 | one-time |
| Create workout | $1.99 | one-time |
| Week 8 - Unlock now | $1.99 | one-time |
| Donation | $4.99 | one-time |
| Full version | $4.99 | one-time |


### Rebird

[App page](https://appshunter.io/ios/app/rebird/id1557896300)

This app offers personalized rehabilitation exercise programs tailored to your recovery needs after injuries or illnesses. It provides over 100 unique exercises designed by physiotherapists and tracks your progress to adjust your routine for optimal results. Get reminders and earn rewards for completing your sessions.

**Highlights:** Personalized exercise programs, 100+ unique exercises, Progress tracking and adjustment, Recovery programs for specific conditions, Exercise reminders, Rewards and bonuses

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Posture free?

Posture is free to download, with in-app purchases available.

### Is Rebird free?

Rebird is free to download, with no in-app purchases.

### Do Posture or Rebird have ads?

Neither Posture nor Rebird shows ads.

### Which is updated more often, Posture or Rebird?

Posture ships an update every 6 weeks, and Rebird every 5 weeks. Most recently, Posture was updated on October 29, 2026 and Rebird on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*