# KEYMO vs Radimmo

The clearest difference is in-app purchases: KEYMO at none against Radimmo's 1. KEYMO also leads on device support (4 vs 2). Radimmo's advantage is update cadence (every 5 days vs monthly). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Radimmo sells 1 in-app purchase, starting at $45.00 per year. KEYMO asks for nothing beyond the download.

KEYMO ships an update monthly, Radimmo every 5 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | KEYMO | Radimmo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | — |
| Size | 141 MB | 6 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BYSTAMP](https://appshunter.io/developer/1253026569) | [Webmarketing Services](https://appshunter.io/developer/843667804) |

## What reviewers say

### KEYMO

[App page](https://appshunter.io/ios/app/keymo/id1533823438)

Digitally sign and seal documents on your mobile device without an internet connection. This app streamlines document processing by eliminating the need for printing, manual stamping, and scanning, saving time and resources. It utilizes advanced security features for authentic and secure electronic signatures.

**Highlights:** Offline electronic sealing and signing, Eliminates printing and scanning, Advanced security with cryptographic chip, Patented authentication technology, Digital identity vault

**In-app purchases:** none


### Radimmo

[App page](https://appshunter.io/ios/app/radimmo/id6798334295)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Radimmo Premium annuel | $45.00 | per year |


## Frequently asked questions

### Is KEYMO free?

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

### Is Radimmo free?

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

### Do KEYMO or Radimmo have ads?

Neither KEYMO nor Radimmo shows ads.

### Which is updated more often, KEYMO or Radimmo?

KEYMO ships an update monthly, and Radimmo every 5 days. Most recently, KEYMO was updated on November 3, 2026 and Radimmo on November 6, 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.*