# Seitron Smart vs Sedna

The clearest difference is update cadence: Seitron Smart at fortnightly against Sedna's monthly. Sedna's advantage is iOS requirement (11.0 vs 15.0). 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.

Seitron Smart ships an update fortnightly, Sedna monthly. Both last shipped on October 29, 2026.

## The numbers

| Metric | Seitron Smart | Sedna |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 67 MB | 47 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seitron Spa](https://appshunter.io/developer/1222487753) | [Codisense Srl Semplificata](https://appshunter.io/developer/953444352) |

## What reviewers say

### Seitron Smart

[App page](https://appshunter.io/ios/app/seitron-smart/id1473602699)

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

**In-app purchases:** none


### Sedna

[App page](https://appshunter.io/ios/app/sedna/id1478127236)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Seitron Smart free?

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

### Is Sedna free?

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

### Do Seitron Smart or Sedna have ads?

Neither Seitron Smart nor Sedna shows ads.

### Which is updated more often, Seitron Smart or Sedna?

Seitron Smart ships an update fortnightly, and Sedna monthly. Most recently, Seitron Smart was updated on October 29, 2026 and Sedna on October 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.*