# iBACK vs iDIERS

The clearest difference is in-app purchases: iBACK at none against iDIERS's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. iDIERS sells 3 in-app purchases, starting at $27.49 per month. iBACK asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | iBACK | iDIERS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 27 MB | 201 MB |
| Requires iOS | 12.0 | **11** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vladimir Vesnin](https://appshunter.io/developer/1437058410) | [iDIERS GmbH](https://appshunter.io/developer/1483716096) |

## 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


### iDIERS

[App page](https://appshunter.io/ios/app/idiers/id1483717889)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iDIERS Pro 1 Month | $27.49 | per month |
| iDIERS Pro 1 Month | $26.99 | one-time |
| iDIERS Pro 3 Months | $79.99 | one-time |


## Frequently asked questions

### Is iBACK free?

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

### Is iDIERS free?

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

### Do iBACK or iDIERS have ads?

Neither iBACK nor iDIERS shows ads.

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

iBACK ships an update every 2 months, and iDIERS every 2 months. Most recently, iBACK was updated on October 17, 2026 and iDIERS on October 9, 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.*