# RED.D vs Sonata AI

The clearest difference is in-app purchases: RED.D at none against Sonata AI's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sonata AI sells 2 in-app purchases, starting at $7.99 per month. RED.D asks for nothing beyond the download.

RED.D ships an update fortnightly, Sonata AI monthly. The most recent releases landed on September 25, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | RED.D | Sonata AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 60 MB | 51 MB |
| Requires iOS | 15.4 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [PT SOLUSI TEKNOLOGI NUSANTARA](https://appshunter.io/developer/1477020321) | [Ofir Haim](https://appshunter.io/developer/1882056907) |

## What reviewers say

### RED.D

[App page](https://appshunter.io/ios/app/redd/id6756986373)

**In-app purchases:** none


### Sonata AI

[App page](https://appshunter.io/ios/app/sonata-ai/id6759975462)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Notevo Pro Monthly | $7.99 | per month |
| Notevo Premium | $14.99 | per month |


## Frequently asked questions

### Is RED.D free?

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

### Is Sonata AI free?

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

### Do RED.D or Sonata AI have ads?

Neither RED.D nor Sonata AI shows ads.

### Which is updated more often, RED.D or Sonata AI?

RED.D ships an update fortnightly, and Sonata AI monthly. Most recently, RED.D was updated on September 25, 2026 and Sonata AI on September 29, 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.*