# SIDA VR vs Notes AI

The clearest difference is in-app purchases: SIDA VR at none against Notes AI's 2. SIDA VR also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Notes AI sells 2 in-app purchases, starting at $3.99 per 7 days. SIDA VR asks for nothing beyond the download.

SIDA VR ships an update every 3 weeks, Notes AI every 3 months. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SIDA VR | Notes AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 45 MB | 52 MB |
| Requires iOS | **11.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Autosoft Multimedia srl](https://appshunter.io/developer/784464890) | [Oussama Anedam](https://appshunter.io/developer/1850303135) |

## What reviewers say

### SIDA VR

[App page](https://appshunter.io/ios/app/sida-vr/id1279187088)

**In-app purchases:** none


### Notes AI

[App page](https://appshunter.io/ios/app/notes-ai-flashcards-and-summary/id6756229800)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OWZE PRO | $3.99 | per 7 days |
| OWZE PRO | $34.99 | per year |


## Frequently asked questions

### Is SIDA VR free?

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

### Is Notes AI free?

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

### Do SIDA VR or Notes AI have ads?

Notes AI shows ads; SIDA VR does not.

### Which is updated more often, SIDA VR or Notes AI?

SIDA VR ships an update every 3 weeks, and Notes AI every 3 months. Most recently, SIDA VR was updated on October 6, 2026 and Notes AI on October 12, 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.*