# SealSign vs OTS Pulse

The clearest difference is update cadence: OTS Pulse at every 2 months against SealSign's every 28 months. SealSign's advantage is iOS requirement (9.0 vs 15.6). 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.

SealSign ships an update every 28 months, OTS Pulse every 2 months. The most recent releases landed on September 28, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | SealSign | OTS Pulse |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 2 months** |
| Size | 16 MB | 19 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Factum Identity Solutions SL](https://appshunter.io/developer/1628978172) | [Ojmar Intelligent Locking Systems](https://appshunter.io/developer/1353773747) |

## What reviewers say

### SealSign

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

**Features:** macOS Compatibility

**In-app purchases:** none


### OTS Pulse

[App page](https://appshunter.io/ios/app/ots-pulse/id6449291874)

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

**In-app purchases:** none


## Frequently asked questions

### Is SealSign free?

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

### Is OTS Pulse free?

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

### Do SealSign or OTS Pulse have ads?

Neither SealSign nor OTS Pulse shows ads.

### Which is updated more often, SealSign or OTS Pulse?

SealSign ships an update every 28 months, and OTS Pulse every 2 months. Most recently, SealSign was updated on September 28, 2026 and OTS Pulse on October 11, 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.*