# Zen Timer. vs iSera Mentor

The clearest difference is ads: iSera Mentor at none against Zen Timer.'s shown. iSera Mentor also leads on update cadence (every 2 weeks vs every 11 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Zen Timer. sells 2 in-app purchases, starting at $4.99 per 6 months and iSera Mentor sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Zen Timer. ships an update every 11 months, iSera Mentor every 2 weeks. The most recent releases landed on September 25, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Zen Timer. | iSera Mentor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (13 ratings)](https://appshunter.io/ios/app/zen-timer/id1035494993/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 65.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 76 MB | 41 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | +4 | 12+ |
| Developer | [LINKLINKS LTD](https://appshunter.io/developer/600375781) | [Guven Davut Oktay](https://appshunter.io/developer/1896016758) |

## What reviewers say

### Zen Timer.

[App page](https://appshunter.io/ios/app/zen-timer/id1035494993)

This app helps you focus on meditation and mindfulness with customizable timers. Set preparation, meditation, interval, and cool-down times with various alert sounds and background music. Track your progress and maintain logs for a more peaceful practice.

**Highlights:** Create unlimited custom timers, Adjust preparation, meditation, and interval times, Select from 18 free interval sounds, Choose background music, Supports background and lock screen operation, Meditation log and report tracking, Multiple profiles and reminders

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - 6 months | $4.99 | per 6 months |
| Pro Version | $49.99 | one-time |


### iSera Mentor

[App page](https://appshunter.io/ios/app/isera-mentor/id6765631316)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iSera Plus | $4.99 | per month |
| iSera Premium | $9.99 | per month |
| iSera Plus | $49.99 | per year |
| iSera Premium | $79.99 | per year |


## Frequently asked questions

### Is Zen Timer. free?

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

### Is iSera Mentor free?

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

### Do Zen Timer. or iSera Mentor have ads?

Zen Timer. shows ads; iSera Mentor does not.

### Which is updated more often, Zen Timer. or iSera Mentor?

Zen Timer. ships an update every 11 months, and iSera Mentor every 2 weeks. Most recently, Zen Timer. was updated on September 25, 2026 and iSera Mentor on October 3, 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.*