# Flex vs Forge Training

The clearest difference is in-app purchases: Forge Training at none against Flex's 2. Flex's advantage is iOS requirement (13.4 vs 15.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Flex sells 2 in-app purchases, starting at $13.99 per month. Forge Training asks for nothing beyond the download.

Flex ships an update every 3 months, Forge Training every 5 months. The most recent releases landed on September 10, 2026 and August 25, 2026 respectively.

## The numbers

| Metric | Flex | Forge Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Size | 70 MB | 191 MB |
| Requires iOS | **13.4** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [CAPNKLUTCH](https://appshunter.io/developer/1772032590) | [Forge Fiitness](https://appshunter.io/developer/1814523949) |

## 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 |


### Forge Training

[App page](https://appshunter.io/ios/app/forge-training/id6747145685)

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Flex free?

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

### Is Forge Training free?

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

### Do Flex or Forge Training have ads?

Neither Flex nor Forge Training shows ads.

### Which is updated more often, Flex or Forge Training?

Flex ships an update every 3 months, and Forge Training every 5 months. Most recently, Flex was updated on September 10, 2026 and Forge Training on August 25, 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.*