# Stretch1.2.3 vs 30 Day Back Ext. Challenge!

The clearest difference is rating: 30 Day Back Ext. Challenge! at 5.0 against Stretch1.2.3's 3.0. 30 Day Back Ext. Challenge! also leads on review sentiment (46% vs 17%) and update cadence (every 3 months vs every 9 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

30 Day Back Ext. Challenge! holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: 30 Day Back Ext. Challenge! has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 17% of Stretch1.2.3's written reviews are positive against 46% of 30 Day Back Ext. Challenge!'s.

Stretch1.2.3 ships an update every 9 months, 30 Day Back Ext. Challenge! every 3 months. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Stretch1.2.3 | 30 Day Back Ext. Challenge! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/stretch123/id507048078/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/30-day-back-ext-challenge/id1435562187/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | 16.7% of reviews | **46.2% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | Ad-supported | Ad-supported |
| Size | 6 MB | 21 MB |
| Requires iOS | 18.6 | **16.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [JK-SCIENCE CO., LTD.](https://appshunter.io/developer/493464594) | [Intersect](https://appshunter.io/developer/641416964) |

## What reviewers say

### Stretch1.2.3

[App page](https://appshunter.io/ios/app/stretch123/id507048078)

This application offers guided stretching exercises to help reduce muscle pain and fatigue, prevent injuries, and improve overall flexibility. It recommends daily practice for maintaining and enhancing your health.

**Highlights:** Muscle and tendon stretching, Cool-down stretches, Warm-up stretches, Injury prevention, Muscle tension relaxation, Improved blood circulation, Increased flexibility

**Features:** macOS Compatibility

**In-app purchases:** none


### 30 Day Back Ext. Challenge!

[App page](https://appshunter.io/ios/app/30-day-back-ext-challenge/id1435562187)

This app helps you track your daily back extensions for a 30-day challenge. It allows you to count your exercises, manage your progress, and receive notifications. You can also record active energy and workouts to Apple Health.

**Highlights:** Count back extensions daily, Manage achievement days, Receive notifications, Record active energy, Sync with Apple Health, Track workouts

**In-app purchases:** none


## Frequently asked questions

### Is Stretch1.2.3 free?

Stretch1.2.3 is free to download, with no in-app purchases.

### Is 30 Day Back Ext. Challenge! free?

30 Day Back Ext. Challenge! is free to download, with no in-app purchases.

### Which has better reviews, Stretch1.2.3 or 30 Day Back Ext. Challenge!?

30 Day Back Ext. Challenge! is rated higher. Stretch1.2.3 averages 3.0 out of 5 from 1 ratings, while 30 Day Back Ext. Challenge! averages 5.0 from 6 ratings.

### Do Stretch1.2.3 or 30 Day Back Ext. Challenge! have ads?

Both Stretch1.2.3 and 30 Day Back Ext. Challenge! show ads.

### Which is updated more often, Stretch1.2.3 or 30 Day Back Ext. Challenge!?

Stretch1.2.3 ships an update every 9 months, and 30 Day Back Ext. Challenge! every 3 months. Most recently, Stretch1.2.3 was updated on October 18, 2026 and 30 Day Back Ext. Challenge! on October 24, 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.*