# Habit Tracker vs SubAtomic

The clearest difference is iOS requirement: SubAtomic at 18.2 against Habit Tracker's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Habit Tracker sells 2 in-app purchases, starting at $1.99 per 7 days and SubAtomic sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Habit Tracker | SubAtomic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Size | 60 MB | 74 MB |
| Requires iOS | 26.0 | **18.2** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GRE Development Ltd](https://appshunter.io/developer/1810332846) | [sinasamaki](https://appshunter.io/developer/1838309385) |

## What reviewers say

### Habit Tracker

[App page](https://appshunter.io/ios/app/habit-tracker-habitix/id6792700003)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Yearly | $49.99 | per year |


### SubAtomic

[App page](https://appshunter.io/ios/app/subatomic-habit-tracker/id6812532289)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SubAtomic Pro | $1.99 | per month |
| SubAtomic Pro - Yearly | $19.99 | per year |
| SubAtomic Pro: One-time purchase | $8.99 | one-time |


## Frequently asked questions

### Is Habit Tracker free?

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

### Is SubAtomic free?

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

### Do Habit Tracker or SubAtomic have ads?

Neither Habit Tracker nor SubAtomic shows ads.

### Which is updated more often, Habit Tracker or SubAtomic?

Habit Tracker ships an update every 4 days, and SubAtomic every 4 days. Most recently, Habit Tracker was updated on October 31, 2026 and SubAtomic on November 6, 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.*