# Clarity App vs NotZero

The clearest difference is in-app purchases: Clarity App at none against NotZero's 2. Clarity App also leads on ads (none vs shown) and device support (3 vs 1). NotZero's advantage is update cadence (weekly vs every 6 weeks). On price there is nothing between them.

Both are free to download. NotZero sells 2 in-app purchases, starting at $4.99 per month. Clarity App asks for nothing beyond the download.

Clarity App ships an update every 6 weeks, NotZero weekly. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Clarity App | NotZero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 32 MB | 16 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TERAOBJECTS INDIA PRIVATE LIMITED](https://appshunter.io/developer/1799886822) | [Daniil Mykhailenko](https://appshunter.io/developer/1886744014) |

## What reviewers say

### Clarity App

[App page](https://appshunter.io/ios/app/clarity-app/id6670274958)

**Features:** macOS Compatibility

**In-app purchases:** none


### NotZero

[App page](https://appshunter.io/ios/app/notzero-habit-tracker/id6760908507)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NotZero Premium Monthly | $4.99 | per month |
| NotZero Premium Yearly | $24.99 | per year |


## Frequently asked questions

### Is Clarity App free?

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

### Is NotZero free?

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

### Do Clarity App or NotZero have ads?

NotZero shows ads; Clarity App does not.

### Which is updated more often, Clarity App or NotZero?

Clarity App ships an update every 6 weeks, and NotZero weekly. Most recently, Clarity App was updated on October 18, 2026 and NotZero on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*