# rSign by Cencert vs Fox

The clearest difference is update cadence: rSign by Cencert at every 2 weeks against Fox's every 2 months. rSign by Cencert also leads on iOS requirement (15.0 vs 17.0). On price, review sentiment, 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.

rSign by Cencert ships an update every 2 weeks, Fox every 2 months. The most recent releases landed on September 24, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | rSign by Cencert | Fox |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **50.0% of reviews** | 44.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 61 MB | 100 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Enigma SOI](https://appshunter.io/developer/965786000) | [F&F FILIPOWSKI SPOLKA JAWNA](https://appshunter.io/developer/578141533) |

## What reviewers say

### rSign by Cencert

[App page](https://appshunter.io/ios/app/rsign-by-cencert/id1549928034)

This app replaces physical signature cards and readers for placing qualified electronic signatures. It allows you to sign documents on any computer without needing specialized hardware, ensuring you never forget your signature card again.

**Highlights:** Qualified electronic signature placement, Replaces physical signature cards, Eliminates need for card readers, Sign on any computer, Convenient document signing

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

**In-app purchases:** none


### Fox

[App page](https://appshunter.io/ios/app/fox/id1580578557)

Control building equipment remotely, including lights, gates, and blinds. Requires compatible wireless Fox devices or an FHome server for smart installation management.

**Highlights:** Remote device control, Smart installation management, Control lights (LED, RGBW), Gate and garage door operation, Blind control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is rSign by Cencert free?

rSign by Cencert is free to download, with no in-app purchases.

### Is Fox free?

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

### Do rSign by Cencert or Fox have ads?

Neither rSign by Cencert nor Fox shows ads.

### Which is updated more often, rSign by Cencert or Fox?

rSign by Cencert ships an update every 2 weeks, and Fox every 2 months. Most recently, rSign by Cencert was updated on September 24, 2026 and Fox on July 5, 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.*