# Flexibility Trainer vs Runcalcs

The clearest difference is in-app purchases: Runcalcs at none against Flexibility Trainer's 10. Runcalcs also leads on ads (none vs shown). Flexibility Trainer's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Flexibility Trainer sells 10 one-off in-app purchases. Runcalcs asks for nothing beyond the download.

Flexibility Trainer ships an update every 3 months, Runcalcs every 2 months. The most recent releases landed on November 13, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Flexibility Trainer | Runcalcs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (73 ratings)](https://appshunter.io/ios/app/flexibility-trainer/id1509292943/reviews)** | — |
| Number of ratings | **73** | — |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 4 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Samantha Roobol](https://appshunter.io/developer/1415281405) | [John Templeton](https://appshunter.io/developer/1833724871) |

## What reviewers say

### Flexibility Trainer

[App page](https://appshunter.io/ios/app/flexibility-trainer/id1509292943)

Achieve your flexibility goals with a 30-day program designed for beginners. This app uses active and passive stretching techniques to improve hamstring, thigh, and hip flexibility, promoting better blood circulation. Sessions are designed to be completed in just ten minutes daily.

**Highlights:** 30-day flexibility program, Active and passive stretching, Improves hamstring, thigh, hip flexibility, Promotes blood circulation, Beginner-friendly, 10-minute daily sessions

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |
| Exercises for beginners | $1.99 | one-time |
| Yoga Poses for Flexibility | $1.99 | one-time |
| Middle Split in 30 Days | $1.99 | one-time |
| Improve Upper Body Flexibility | $1.99 | one-time |
| Learn the Splits in 60 Days | $1.99 | one-time |
| The 30 Day Splits Challenge | $1.99 | one-time |
| How to Do a Scorpion Stretch | $1.99 | one-time |
| Core and Flexibility Workouts | $1.99 | one-time |
| Full Bundle | $4.99 | one-time |


### Runcalcs

[App page](https://appshunter.io/ios/app/runcalcs/id6751153764)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flexibility Trainer free?

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

### Is Runcalcs free?

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

### Do Flexibility Trainer or Runcalcs have ads?

Flexibility Trainer shows ads; Runcalcs does not.

### Which is updated more often, Flexibility Trainer or Runcalcs?

Flexibility Trainer ships an update every 3 months, and Runcalcs every 2 months. Most recently, Flexibility Trainer was updated on November 13, 2026 and Runcalcs on November 8, 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.*