# WattTools vs Nota6

The clearest difference is in-app purchases: Nota6 at none against WattTools's 2. Nota6 also leads on update cadence (every 2 days vs every 3 weeks). WattTools's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. WattTools sells 2 in-app purchases, starting at $0.99 per 7 days. Nota6 asks for nothing beyond the download.

WattTools ships an update every 3 weeks, Nota6 every 2 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | WattTools | Nota6 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 101 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [源 张](https://appshunter.io/developer/1649775012) | [笑天 刘](https://appshunter.io/developer/1845977493) |

## What reviewers say

### WattTools

[App page](https://appshunter.io/ios/app/watttools/id6476344694)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $0.99 | per 7 days |
| 3Credits | $0.99 | one-time |


### Nota6

[App page](https://appshunter.io/ios/app/nota6/id6771324417)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is WattTools free?

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

### Is Nota6 free?

Nota6 is free to download, with no in-app purchases.

### Do WattTools or Nota6 have ads?

Neither WattTools nor Nota6 shows ads.

### Which is updated more often, WattTools or Nota6?

WattTools ships an update every 3 weeks, and Nota6 every 2 days. Most recently, WattTools was updated on October 2, 2026 and Nota6 on October 7, 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.*