# Chave Eletrônica vs Fer.mento

The clearest difference is update cadence: Fer.mento at weekly against Chave Eletrônica's every 3 weeks. 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.

Chave Eletrônica ships an update every 3 weeks, Fer.mento weekly. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Chave Eletrônica | Fer.mento |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 17 MB | 89 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexandre El Kadri](https://appshunter.io/developer/1313320419) | [InsideTheBox](https://appshunter.io/developer/1485268088) |

## What reviewers say

### Chave Eletrônica

[App page](https://appshunter.io/ios/app/chave-eletronica/id1313320420)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fer.mento

[App page](https://appshunter.io/ios/app/fermento/id6743185985)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chave Eletrônica free?

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

### Is Fer.mento free?

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

### Do Chave Eletrônica or Fer.mento have ads?

Neither Chave Eletrônica nor Fer.mento shows ads.

### Which is updated more often, Chave Eletrônica or Fer.mento?

Chave Eletrônica ships an update every 3 weeks, and Fer.mento weekly. Most recently, Chave Eletrônica was updated on October 11, 2026 and Fer.mento on October 4, 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.*