# Interval Timer vs Heidi Workout Timer

The clearest difference is in-app purchases: Heidi Workout Timer at none against Interval Timer's 3. Heidi Workout Timer also leads on update cadence (fortnightly vs every 5 weeks) and iOS requirement (12.4 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $1.99 per month. Heidi Workout Timer asks for nothing beyond the download.

Interval Timer ships an update every 5 weeks, Heidi Workout Timer fortnightly. The most recent releases landed on September 10, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Interval Timer | Heidi Workout Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Size | 14 MB | 12 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sebastian Prasa](https://appshunter.io/developer/1500038034) | [HIJO DIGITAL LTD](https://appshunter.io/developer/1691527420) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-hiit-and-tabata/id1633488334)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium One Month | $1.99 | per month |
| Premium One Year | $8.49 | per year |
| Premium Lifetime | $16.99 | one-time |


### Heidi Workout Timer

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer free?

Interval Timer 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 Interval Timer or Heidi Workout Timer have ads?

Neither Interval Timer nor Heidi Workout Timer shows ads.

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

Interval Timer ships an update every 5 weeks, and Heidi Workout Timer fortnightly. Most recently, Interval Timer was updated on September 10, 2026 and Heidi Workout Timer on September 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.*