# Propellon vs Sutyo AI

The clearest difference is update cadence: Sutyo AI at every 9 days against Propellon's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

Propellon ships an update every 6 weeks, Sutyo AI every 9 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Propellon | Sutyo AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sutyo-ai/id6793477030/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | — | Free |
| Size | 8 MB | 251 MB |
| Requires iOS | 18.1 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Masoumi Rad](https://appshunter.io/developer/1848390959) | [SUTYO FUTURESTYLE INC.](https://appshunter.io/developer/6793477032) |

## What reviewers say

### Propellon

[App page](https://appshunter.io/ios/app/propellon/id6761767310)

**In-app purchases:** none


### Sutyo AI

[App page](https://appshunter.io/ios/app/sutyo-ai/id6793477030)

This app acts as a personal memory assistant, capturing spoken words, typed text, and imported files. It organizes this information, allowing users to ask questions and generate summaries, all while prioritizing user privacy with end-to-end encryption.

**Highlights:** Smart voice notebook with automatic summarization, Personal knowledge base for imported files and links, AI keyboard for voice-to-text in any app, Shareable, interactive memories, End-to-end encrypted and local-first processing

**In-app purchases:** none


## Frequently asked questions

### Is Propellon free?

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

### Is Sutyo AI free?

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

### Do Propellon or Sutyo AI have ads?

Neither Propellon nor Sutyo AI shows ads.

### Which is updated more often, Propellon or Sutyo AI?

Propellon ships an update every 6 weeks, and Sutyo AI every 9 days. Most recently, Propellon was updated on October 31, 2026 and Sutyo AI on October 31, 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.*