# Interval Stopwatch Timer vs StrikeBook

The clearest difference is update cadence: StrikeBook at every 3 weeks against Interval Stopwatch Timer's every 4 months. Interval Stopwatch Timer's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

Interval Stopwatch Timer ships an update every 4 months, StrikeBook every 3 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Interval Stopwatch Timer | StrikeBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/interval-stopwatch-timer/id1453271795/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 21 MB | 4 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MobilApp.nu](https://appshunter.io/developer/1453271794) | [Omer Faruk Asil](https://appshunter.io/developer/6789993076) |

## What reviewers say

### Interval Stopwatch Timer

[App page](https://appshunter.io/ios/app/interval-stopwatch-timer/id1453271795)

Easily set custom work and rest intervals with audible alerts. This timer runs in the background, displaying countdowns and elapsed times for focused work, exercise, or study sessions. Supports both portrait and landscape modes.

**Highlights:** Customizable work/rest intervals, Audible beep alerts, Background operation, Countdown and elapsed time displays, Portrait and landscape modes, Multiple use case examples

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

**In-app purchases:** none


### StrikeBook

[App page](https://appshunter.io/ios/app/strikebook-bowling-tracker/id6792579101)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Stopwatch Timer free?

Interval Stopwatch Timer is free to download, with no in-app purchases.

### Is StrikeBook free?

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

### Do Interval Stopwatch Timer or StrikeBook have ads?

Neither Interval Stopwatch Timer nor StrikeBook shows ads.

### Which is updated more often, Interval Stopwatch Timer or StrikeBook?

Interval Stopwatch Timer ships an update every 4 months, and StrikeBook every 3 weeks. Most recently, Interval Stopwatch Timer was updated on October 14, 2026 and StrikeBook on October 4, 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.*