# Optimind vs kach

The clearest difference is in-app purchases: kach at none against Optimind's 2. kach also leads on update cadence (every 2 days vs every 2 weeks) and device support (3 vs 1). Optimind's advantage is ads (none vs shown). On price there is nothing between them.

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

Optimind ships an update every 2 weeks, kach every 2 days. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Optimind | kach |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 46 MB | 100 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Sergei Harlamov](https://appshunter.io/developer/1105814418) | [Boris Varshavskii](https://appshunter.io/developer/6779245696) |

## What reviewers say

### Optimind

[App page](https://appshunter.io/ios/app/optimind/id6776255028)

This app offers guided meditations, sleep stories, and tools for emotional tracking and personal development. It helps users reduce stress, improve sleep, and gain self-awareness through daily practices and goal setting.

**Highlights:** Short guided meditations, Sleep stories and music, Emotion and mood journaling, Daily planning and goal setting, Bio-rhythm tracking, Self-development practices

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Optimind Premium — Monthly | $3.99 | per month |
| Optimind Premium — Yearly | $9.99 | per year |


### kach

[App page](https://appshunter.io/ios/app/kach-gym-and-workout-tracker/id6779245693)

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

**In-app purchases:** none


## Frequently asked questions

### Is Optimind free?

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

### Is kach free?

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

### Do Optimind or kach have ads?

kach shows ads; Optimind does not.

### Which is updated more often, Optimind or kach?

Optimind ships an update every 2 weeks, and kach every 2 days. Most recently, Optimind was updated on October 8, 2026 and kach on October 17, 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.*