# Strike Timer Interval Training vs RoundFlow

The clearest difference is update cadence: RoundFlow at weekly against Strike Timer Interval Training's every 3 weeks. Strike Timer Interval Training's advantage is iOS requirement (15.1 vs 17.0). 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 RoundFlow sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Strike Timer Interval Training ships an update every 3 weeks, RoundFlow weekly. The most recent releases landed on September 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Strike Timer Interval Training | RoundFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/roundflow-interval-timer/id6785911960/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Freemium |
| Size | 47 MB | 11 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Shannon Kempenich](https://appshunter.io/developer/579568236) | [Zakaria Elkassmi](https://appshunter.io/developer/6785544936) |

## 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 |


### RoundFlow

[App page](https://appshunter.io/ios/app/roundflow-interval-timer/id6785911960)

This app provides a customizable interval timer for various combat sports and fitness routines. It seamlessly integrates with music apps, allowing your playlist to continue uninterrupted during workouts. Features include coach voice prompts, combo calls, and workout tracking.

**Highlights:** Music integration with Spotify, Apple Music, YouTube Music, Customizable round, rest, and warm-up/cool-down timers, Recorded coach voice and combo callouts, Workout tracking with calendar and streaks, Apple Watch companion app with haptic feedback, Workout art generation for social sharing, Group session synchronization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RoundFlow Pro (Monthly) | $2.99 | per month |
| RoundFlow Pro (Yearly) | $7.99 | per year |
| RoundFlow Pro (Lifetime) | $24.99 | 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 RoundFlow free?

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

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

Neither Strike Timer Interval Training nor RoundFlow shows ads.

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

Strike Timer Interval Training ships an update every 3 weeks, and RoundFlow weekly. Most recently, Strike Timer Interval Training was updated on September 11, 2026 and RoundFlow on September 24, 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.*