# Exercise Timer Resero vs ZenFlow

The clearest difference is in-app purchases: Exercise Timer Resero at none against ZenFlow's 2. ZenFlow's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ZenFlow sells 2 in-app purchases, starting at $3.99 per month. Exercise Timer Resero asks for nothing beyond the download.

Exercise Timer Resero ships an update every 3 weeks, ZenFlow every 2 weeks. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Exercise Timer Resero | ZenFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 112 MB | 48 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Imarum GmbH](https://appshunter.io/developer/1856347447) | [DJUMP, MB](https://appshunter.io/developer/1861303154) |

## What reviewers say

### Exercise Timer Resero

[App page](https://appshunter.io/ios/app/exercise-timer-resero/id6761783791)

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

**In-app purchases:** none


### ZenFlow

[App page](https://appshunter.io/ios/app/zenflow-meditation-timer/id6761987064)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZenFlow Premium Monthly | $3.99 | per month |
| ZenFlow Premium Yearly | $23.99 | per year |


## Frequently asked questions

### Is Exercise Timer Resero free?

Exercise Timer Resero is free to download, with no in-app purchases.

### Is ZenFlow free?

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

### Do Exercise Timer Resero or ZenFlow have ads?

Neither Exercise Timer Resero nor ZenFlow shows ads.

### Which is updated more often, Exercise Timer Resero or ZenFlow?

Exercise Timer Resero ships an update every 3 weeks, and ZenFlow every 2 weeks. Most recently, Exercise Timer Resero was updated on October 13, 2026 and ZenFlow on September 30, 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.*