# SealSign vs Atlantir

The clearest difference is iOS requirement: SealSign at 9.0 against Atlantir's 12.0. 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.

SealSign ships an update every 28 months, Atlantir every 48 months. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SealSign | Atlantir |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 28 months** | Every 48 months |
| Size | 16 MB | 16 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Factum Identity Solutions SL](https://appshunter.io/developer/1628978172) | [CIE INFORMATICA PROFESIONAL SL](https://appshunter.io/developer/1112229158) |

## What reviewers say

### SealSign

[App page](https://appshunter.io/ios/app/sealsign/id1486869928)

**Features:** macOS Compatibility

**In-app purchases:** none


### Atlantir

[App page](https://appshunter.io/ios/app/atlantir/id1562366313)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SealSign free?

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

### Is Atlantir free?

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

### Do SealSign or Atlantir have ads?

Neither SealSign nor Atlantir shows ads.

### Which is updated more often, SealSign or Atlantir?

SealSign ships an update every 28 months, and Atlantir every 48 months. Most recently, SealSign was updated on October 14, 2026 and Atlantir on October 17, 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.*