# Habit Stack vs Master Key

The clearest difference is update cadence: Master Key at every 2 weeks against Habit Stack's every 2 months. Master Key also leads on iOS requirement (16.2 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Habit Stack sells 3 in-app purchases, starting at $1.99 per month and Master Key sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Habit Stack ships an update every 2 months, Master Key every 2 weeks. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Habit Stack | Master Key |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 13 MB | 11 MB |
| Requires iOS | 26.0 | **16.2** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Reuben Enterprises Ltd](https://appshunter.io/developer/1804593784) | [Shaw Zarkoub](https://appshunter.io/developer/1895860228) |

## What reviewers say

### Habit Stack

[App page](https://appshunter.io/ios/app/habit-stack-self-care/id6758116671)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $19.99 | per year |
| Lifetime | $39.99 | one-time |


### Master Key

[App page](https://appshunter.io/ios/app/master-key-manifesting/id6781839646)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Master Key Premium — Weekly | $2.99 | per 7 days |
| Master Key Premium — Annual | $49.99 | per year |


## Frequently asked questions

### Is Habit Stack free?

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

### Is Master Key free?

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

### Do Habit Stack or Master Key have ads?

Neither Habit Stack nor Master Key shows ads.

### Which is updated more often, Habit Stack or Master Key?

Habit Stack ships an update every 2 months, and Master Key every 2 weeks. Most recently, Habit Stack was updated on November 9, 2026 and Master Key on November 5, 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.*