# Master One vs nu

The clearest difference is ads: nu at none against Master One's shown. nu also leads on device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Master One sells 1 one-off in-app purchase and nu sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Master One ships an update every 2 months, nu monthly. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Master One | nu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/master-one-habit-builder/id6504889928/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 9 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mary Ogawa](https://appshunter.io/developer/1615657857) | [Dahye Yu](https://appshunter.io/developer/6777135828) |

## What reviewers say

### Master One

[App page](https://appshunter.io/ios/app/master-one-habit-builder/id6504889928)

This app guides you in building habits by focusing on one at a time. You can set custom durations, track your progress and streaks, and review your completed habits. It offers a clean, distraction-free interface with options to archive or restart habits.

**Highlights:** One habit focus, Custom habit durations, Streak and history tracking, Mastered habits archive, Minimalist design, Archive and restart habits, Strict mode for perfect streaks

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LIFE_PURCHASE | $0.99 | one-time |


### nu

[App page](https://appshunter.io/ios/app/nu-adhd-journal/id6795662726)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is Master One free?

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

### Is nu free?

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

### Do Master One or nu have ads?

Master One shows ads; nu does not.

### Which is updated more often, Master One or nu?

Master One ships an update every 2 months, and nu monthly. Most recently, Master One was updated on October 10, 2026 and nu on October 4, 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.*