# Heidi Workout Timer vs Simple Workout Interval Timer

The clearest difference is in-app purchases: Heidi Workout Timer at none against Simple Workout Interval Timer's 1. Heidi Workout Timer also leads on update cadence (fortnightly vs every 9 months) and iOS requirement (12.4 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. Simple Workout Interval Timer sells 1 in-app purchase, starting at $7.99 per year. Heidi Workout Timer asks for nothing beyond the download.

Heidi Workout Timer ships an update fortnightly, Simple Workout Interval Timer every 9 months. The most recent releases landed on September 9, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Heidi Workout Timer | Simple Workout Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 9 months |
| Size | 12 MB | 1 MB |
| Requires iOS | **12.4** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HIJO DIGITAL LTD](https://appshunter.io/developer/1691527420) | [Sidekick Digital Limited](https://appshunter.io/developer/1142261446) |

## What reviewers say

### Heidi Workout Timer

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Workout Interval Timer

[App page](https://appshunter.io/ios/app/simple-workout-interval-timer/id6741739319)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Yearly | $7.99 | per year |


## Frequently asked questions

### Is Heidi Workout Timer free?

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

### Is Simple Workout Interval Timer free?

Simple Workout Interval Timer is free to download, with in-app purchases available.

### Do Heidi Workout Timer or Simple Workout Interval Timer have ads?

Neither Heidi Workout Timer nor Simple Workout Interval Timer shows ads.

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

Heidi Workout Timer ships an update fortnightly, and Simple Workout Interval Timer every 9 months. Most recently, Heidi Workout Timer was updated on September 9, 2026 and Simple Workout Interval Timer on May 17, 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.*