# Kaizen vs Habit OS

The clearest difference is rating: Kaizen at 5.0 against Habit OS's 1.0. Kaizen also leads on iOS requirement (16.4 vs 18.6). Habit OS's advantage is update cadence (every 4 days vs every 2 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Kaizen sells 2 in-app purchases, starting at $3.99 per month and Habit OS sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Kaizen holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Kaizen ships an update every 2 weeks, Habit OS every 4 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Kaizen | Habit OS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kaizen-focus-and-study-timer/id6755314708/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/habit-os-planner-and-tracker/id6755546677/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Freemium | Freemium |
| Size | 69 MB | 15 MB |
| Requires iOS | **16.4** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [MK Development](https://appshunter.io/developer/1853083060) | [Devibrium LTD](https://appshunter.io/developer/1854542657) |

## What reviewers say

### Kaizen

[App page](https://appshunter.io/ios/app/kaizen-focus-and-study-timer/id6755314708)

This app helps you stay focused by blocking distracting apps and websites. It also includes a habit tracker, task manager, and live focus rooms for collaborative study sessions. Customize timers and themes for a personalized productivity experience.

**Highlights:** Customizable Pomodoro timer, App and website blocking, Habit tracking with forgiving streaks, Live focus rooms for co-studying, Task management with priorities, Themed backgrounds and focus music

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (monthly) | $3.99 | per month |
| Premium (yearly) | $39.99 | per year |


### Habit OS

[App page](https://appshunter.io/ios/app/habit-os-planner-and-tracker/id6755546677)

This app helps you build and maintain daily habits with a clean interface and progress tracking. It offers planning tools, journaling features, and customizable themes to support consistent results and well-being.

**Highlights:** Daily habit tracking with clear targets, Streak tracking and momentum visualization, Daily planner with reminders, Journaling and mood tracking, Customizable themes and feedback, Home screen widgets for quick access

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is Kaizen free?

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

### Is Habit OS free?

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

### Which has better reviews, Kaizen or Habit OS?

Kaizen is rated higher. Kaizen averages 5.0 out of 5 from 1 ratings, while Habit OS averages 1.0 from 1 ratings.

### Do Kaizen or Habit OS have ads?

Neither Kaizen nor Habit OS shows ads.

### Which is updated more often, Kaizen or Habit OS?

Kaizen ships an update every 2 weeks, and Habit OS every 4 days. Most recently, Kaizen was updated on October 30, 2026 and Habit OS on October 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.*