# iBACK vs Rebird

The clearest difference is review sentiment: iBACK at 71% against Rebird's 33%. Rebird's advantage is iOS requirement (9.0 vs 12.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

iBACK ships an update every 2 months, Rebird every 5 weeks. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | iBACK | Rebird |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **71.4% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 27 MB | 47 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Vladimir Vesnin](https://appshunter.io/developer/1437058410) | [Viacheslav Babii](https://appshunter.io/developer/1747898491) |

## What reviewers say

### iBACK

[App page](https://appshunter.io/ios/app/iback/id1437058411)

This app helps reduce back pain and strengthen back muscles through short, guided exercises. It uses a posture sensor that vibrates to remind users to maintain proper posture.

**Highlights:** Reduce back pain, Strengthen back muscles, 5-minute exercises, Posture sensor integration, Vibration reminders for posture

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 iBACK free?

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

### Is Rebird free?

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

### Do iBACK or Rebird have ads?

Neither iBACK nor Rebird shows ads.

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

iBACK ships an update every 2 months, and Rebird every 5 weeks. Most recently, iBACK was updated on October 17, 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.*