# Flex vs iWorkout

The clearest difference is in-app purchases: iWorkout at none against Flex's 2. iWorkout also leads on update cadence (every 9 days vs monthly) and iOS requirement (13.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Flex sells 2 in-app purchases, starting at $6.99 per month. iWorkout asks for nothing beyond the download.

Flex ships an update monthly, iWorkout every 9 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Flex | iWorkout |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Size | 53 MB | 205 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David Kelen](https://appshunter.io/developer/1796712157) | [Timon Egli](https://appshunter.io/developer/1573384962) |

## What reviewers say

### Flex

[App page](https://appshunter.io/ios/app/flex-redefine-strength/id6744560828)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flex - Emerald \| Monthly | $6.99 | per month |
| Flex - Emerald \| Yearly | $69.99 | per year |


### iWorkout

[App page](https://appshunter.io/ios/app/iworkout-gym-workout-tracker/id6748285543)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flex free?

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

### Is iWorkout free?

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

### Do Flex or iWorkout have ads?

Neither Flex nor iWorkout shows ads.

### Which is updated more often, Flex or iWorkout?

Flex ships an update monthly, and iWorkout every 9 days. Most recently, Flex was updated on October 25, 2026 and iWorkout 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.*