# Heidi Workout Timer vs Twin Calisthenics

The clearest difference is iOS requirement: Heidi Workout Timer at 12.4 against Twin Calisthenics's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Heidi Workout Timer | Twin Calisthenics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 12 MB | 83 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HIJO DIGITAL LTD](https://appshunter.io/developer/1691527420) | [Uplyft Innovations Private Limited](https://appshunter.io/developer/1485155244) |

## What reviewers say

### Heidi Workout Timer

[App page](https://appshunter.io/ios/app/heidi-workout-timer/id6450010213)

**Features:** macOS Compatibility

**In-app purchases:** none


### Twin Calisthenics

[App page](https://appshunter.io/ios/app/twin-calisthenics/id6478072045)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Heidi Workout Timer free?

Heidi Workout Timer is free to download, with no in-app purchases.

### Is Twin Calisthenics free?

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

### Do Heidi Workout Timer or Twin Calisthenics have ads?

Neither Heidi Workout Timer nor Twin Calisthenics shows ads.

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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.*