# Autofirma App vs Equation Connect

The clearest difference is update cadence: Equation Connect at every 2 months against Autofirma App's every 7 months. Equation Connect also leads on iOS requirement (14.0 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.

Autofirma App ships an update every 7 months, Equation Connect every 2 months. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Autofirma App | Equation Connect |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 6.2% of reviews | **7.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 35 MB | 63 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ministerio de Asuntos Economicos y Transformacion Digital](https://appshunter.io/developer/627410004) | [Home Domotic Developments, S.L.](https://appshunter.io/developer/1481462876) |

## What reviewers say

### Autofirma App

[App page](https://appshunter.io/ios/app/autofirma-app/id627410001)

Sign electronic documents and PDFs directly from your iOS device. Supports web-based transactions and local files, requiring a digital certificate for secure authentication. Compatible with iOS 17+ and any web browser.

**Highlights:** Electronic signature for web transactions, Sign PDF documents, Digital certificate installation, iOS 17+ compatibility, Web browser integration, Cloud storage access

**Features:** Vision Pro support

**In-app purchases:** none


### Equation Connect

[App page](https://appshunter.io/ios/app/equation-connect/id1545429719)

Remotely manage and control smart radiators from Equation. Group devices by zone, adjust temperatures, customize heating schedules, and monitor energy consumption. Features include hotel mode, brightness control, and timer functions.

**Highlights:** Remote radiator control, Zone grouping, Temperature adjustment, Customizable schedules, Energy consumption monitoring, Hotel mode activation, Brightness control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Autofirma App free?

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

### Is Equation Connect free?

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

### Do Autofirma App or Equation Connect have ads?

Neither Autofirma App nor Equation Connect shows ads.

### Which is updated more often, Autofirma App or Equation Connect?

Autofirma App ships an update every 7 months, and Equation Connect every 2 months. Most recently, Autofirma App was updated on September 21, 2026 and Equation Connect on September 19, 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.*