# Prometrics vs Audio Notello

The clearest difference is iOS requirement: Audio Notello at 16.0 against Prometrics's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Prometrics ships an update fortnightly, Audio Notello weekly. The most recent releases landed on October 19, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Prometrics | Audio Notello |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 44 MB | 8 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Steven Stuart](https://appshunter.io/developer/1464507689) | [Aleksey Chanov](https://appshunter.io/developer/1547499003) |

## What reviewers say

### Prometrics

[App page](https://appshunter.io/ios/app/prometrics/id1464507690)

**In-app purchases:** none


### Audio Notello

[App page](https://appshunter.io/ios/app/audio-notello/id6742573183)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prometrics free?

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

### Is Audio Notello free?

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

### Do Prometrics or Audio Notello have ads?

Neither Prometrics nor Audio Notello shows ads.

### Which is updated more often, Prometrics or Audio Notello?

Prometrics ships an update fortnightly, and Audio Notello weekly. Most recently, Prometrics was updated on October 19, 2026 and Audio Notello on October 28, 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.*