# Flex vs Stretchy Stretching & Mobility

The clearest difference is iOS requirement: Flex at 13.4 against Stretchy Stretching & Mobility's 18.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Flex sells 2 in-app purchases, starting at $13.99 per month and Stretchy Stretching & Mobility sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Flex ships an update every 3 months, Stretchy Stretching & Mobility every 2 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Flex | Stretchy Stretching & Mobility |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 70 MB | 12 MB |
| Requires iOS | **13.4** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [CAPNKLUTCH](https://appshunter.io/developer/1772032590) | [Morgan Zellers](https://appshunter.io/developer/1651985906) |

## What reviewers say

### Flex

[App page](https://appshunter.io/ios/app/flex-stretch/id6736611703)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $13.99 | per month |
| Premium Annual | $39.99 | per year |


### Stretchy Stretching & Mobility

[App page](https://appshunter.io/ios/app/stretchy-stretching-and-mobility/id6743681346)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $4.99 | per 7 days |
| Monthly Access | $9.99 | per month |


## Frequently asked questions

### Is Flex free?

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

### Is Stretchy Stretching & Mobility free?

Stretchy Stretching & Mobility is free to download, with in-app purchases available.

### Do Flex or Stretchy Stretching & Mobility have ads?

Neither Flex nor Stretchy Stretching & Mobility shows ads.

### Which is updated more often, Flex or Stretchy Stretching & Mobility?

Flex ships an update every 3 months, and Stretchy Stretching & Mobility every 2 months. Most recently, Flex was updated on October 25, 2026 and Stretchy Stretching & Mobility on October 28, 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.*