# MuscleTrainingTimer vs Heidi Workout Timer

The clearest difference is in-app purchases: Heidi Workout Timer at none against MuscleTrainingTimer's 1. Heidi Workout Timer also leads on iOS requirement (12.4 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. MuscleTrainingTimer sells 1 one-off in-app purchase. Heidi Workout Timer asks for nothing beyond the download.

MuscleTrainingTimer ships an update every 2 weeks, Heidi Workout Timer fortnightly. Both last shipped on November 3, 2026.

## The numbers

| Metric | MuscleTrainingTimer | Heidi Workout Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/heidi-workout-timer/id6450010213/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | — | Free |
| Size | 20 MB | 12 MB |
| Requires iOS | 16.0 | **12.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ryo muranaka](https://appshunter.io/developer/1606480078) | [HIJO DIGITAL LTD](https://appshunter.io/developer/1691527420) |

## What reviewers say

### MuscleTrainingTimer

[App page](https://appshunter.io/ios/app/muscletrainingtimer-exercise/id6446249318)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $19.99 | one-time |


### Heidi Workout Timer

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

This interval timer helps you manage workout durations for exercises, rest, and recovery. It supports various training styles like HIIT, Pilates, and Yoga, with customizable timers and clear visual cues. The app offers a large display, workout history, and language options.

**Highlights:** Customizable interval timers, Supports HIIT, Pilates, Tabata, Yoga, Sound and vibration alerts, Large, readable display, Workout history tracking, Light and dark mode options

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MuscleTrainingTimer free?

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

### Is Heidi Workout Timer free?

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

### Do MuscleTrainingTimer or Heidi Workout Timer have ads?

Neither MuscleTrainingTimer nor Heidi Workout Timer shows ads.

### Which is updated more often, MuscleTrainingTimer or Heidi Workout Timer?

MuscleTrainingTimer ships an update every 2 weeks, and Heidi Workout Timer fortnightly. Most recently, MuscleTrainingTimer was updated on November 3, 2026 and Heidi Workout Timer on November 3, 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.*