# Strike Timer Interval Training vs RoundBell

The clearest difference is update cadence: RoundBell at every 9 days against Strike Timer Interval Training's every 3 weeks. Strike Timer Interval Training's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Strike Timer Interval Training sells 1 in-app purchase, starting at $14.99 per year and RoundBell sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Strike Timer Interval Training ships an update every 3 weeks, RoundBell every 9 days. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Strike Timer Interval Training | RoundBell |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 47 MB | 5 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shannon Kempenich](https://appshunter.io/developer/579568236) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Strike Timer Interval Training

[App page](https://appshunter.io/ios/app/strike-timer-interval-training/id6761288575)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Strike Timer Pro | $14.99 | per year |


### RoundBell

[App page](https://appshunter.io/ios/app/roundbell-round-timer/id6790007564)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RoundBell Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Strike Timer Interval Training free?

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

### Is RoundBell free?

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

### Do Strike Timer Interval Training or RoundBell have ads?

Neither Strike Timer Interval Training nor RoundBell shows ads.

### Which is updated more often, Strike Timer Interval Training or RoundBell?

Strike Timer Interval Training ships an update every 3 weeks, and RoundBell every 9 days. Most recently, Strike Timer Interval Training was updated on October 15, 2026 and RoundBell on October 16, 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.*