# FitUnlock vs Plank Form Timer

The clearest difference is in-app purchases: FitUnlock at none against Plank Form Timer's 1. FitUnlock also leads on ads (none vs shown). Plank Form Timer's advantage is update cadence (every 2 weeks vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Plank Form Timer sells 1 one-off in-app purchase. FitUnlock asks for nothing beyond the download.

FitUnlock ships an update every 4 months, Plank Form Timer every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | FitUnlock | Plank Form Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 137 MB | 13 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ivan Chemerkin](https://appshunter.io/developer/1890315734) | [Hosung Hwang](https://appshunter.io/developer/6789744714) |

## What reviewers say

### FitUnlock

[App page](https://appshunter.io/ios/app/fitunlock/id6761579354)

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

**In-app purchases:** none


### Plank Form Timer

[App page](https://appshunter.io/ios/app/plank-form-timer-ai-check/id6793725781)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is FitUnlock free?

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

### Is Plank Form Timer free?

Plank Form Timer is free to download, with in-app purchases available.

### Do FitUnlock or Plank Form Timer have ads?

Plank Form Timer shows ads; FitUnlock does not.

### Which is updated more often, FitUnlock or Plank Form Timer?

FitUnlock ships an update every 4 months, and Plank Form Timer every 2 weeks. Most recently, FitUnlock was updated on October 25, 2026 and Plank Form Timer on October 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.*