# Interval vs Flow Fitness Timer

The clearest difference is in-app purchases: Flow Fitness Timer at none against Interval's 2. Flow Fitness Timer also leads on iOS requirement (16.4 vs 26.0). Interval's advantage is update cadence (every 6 days vs monthly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Interval sells 2 in-app purchases, starting at $3.99 per year. Flow Fitness Timer asks for nothing beyond the download.

Interval ships an update every 6 days, Flow Fitness Timer monthly. The most recent releases landed on November 9, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Interval | Flow Fitness Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Monthly |
| Size | 434 MB | 130 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Felix Thron](https://appshunter.io/developer/1868228169) | [FILIBERTO IVANO GUARINO](https://appshunter.io/developer/6785481340) |

## What reviewers say

### Interval

[App page](https://appshunter.io/ios/app/interval-workout-timer/id6761282472)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer Pro Yearly | $3.99 | per year |
| Interval Timer Pro | $12.99 | one-time |


### Flow Fitness Timer

[App page](https://appshunter.io/ios/app/flow-fitness-timer/id6794229311)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval free?

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

### Is Flow Fitness Timer free?

Flow Fitness Timer is free to download, with no in-app purchases.

### Do Interval or Flow Fitness Timer have ads?

Neither Interval nor Flow Fitness Timer shows ads.

### Which is updated more often, Interval or Flow Fitness Timer?

Interval ships an update every 6 days, and Flow Fitness Timer monthly. Most recently, Interval was updated on November 9, 2026 and Flow Fitness Timer on November 13, 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.*