# Mass vs Hip Flexor Stretches

The clearest difference is price: Hip Flexor Stretches at Free against Mass's $0.99. Hip Flexor Stretches also leads on iOS requirement (15.6 vs 26.1). Mass's advantage is in-app purchases (none vs 1) and update cadence (every 6 days vs every 2 months). On ads and device support there is nothing between them.

Hip Flexor Stretches is free to download; Mass costs $0.99 up front. Hip Flexor Stretches sells 1 in-app purchase, starting at $1.49 per 7 days. Mass asks for nothing beyond the download.

Mass ships an update every 6 days, Hip Flexor Stretches every 2 months. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Mass | Hip Flexor Stretches |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | Paid | — |
| Size | 15 MB | 37 MB |
| Requires iOS | 26.1 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Runar Hummelsund](https://appshunter.io/developer/1143920863) | [Verdhit Agarwal](https://appshunter.io/developer/1827689227) |

## What reviewers say

### Mass

[App page](https://appshunter.io/ios/app/mass-workout-tracker/id6739637482)

This app simplifies strength training by allowing users to quickly log sets, track weight and reps, and monitor workout consistency. It offers features like custom workout creation, warm-up suggestions, and progress review, making it ideal for consistent strength building.

**Highlights:** Create custom workouts, Log reps and weight, Track weekly volume, View plate math, Add warm-up suggestions, Review session history

**Features:** macOS Compatibility

**In-app purchases:** none


### Hip Flexor Stretches

[App page](https://appshunter.io/ios/app/hip-flexor-stretches/id6777649706)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hip Flexor Subscription | $1.49 | per 7 days |


## Frequently asked questions

### Is Mass free?

Mass costs $0.99, with no in-app purchases.

### Is Hip Flexor Stretches free?

Hip Flexor Stretches is free to download, with in-app purchases available.

### Do Mass or Hip Flexor Stretches have ads?

Neither Mass nor Hip Flexor Stretches shows ads.

### Which is updated more often, Mass or Hip Flexor Stretches?

Mass ships an update every 6 days, and Hip Flexor Stretches every 2 months. Most recently, Mass was updated on October 15, 2026 and Hip Flexor Stretches on October 21, 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.*