# Concremold vs Duosafe

The clearest difference is update cadence: Duosafe at fortnightly against Concremold's every 5 months. 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.

Concremold ships an update every 5 months, Duosafe fortnightly. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Concremold | Duosafe |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Size | 23 MB | 153 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Rubens Marcelo Teixeira Pirotto Ltda](https://appshunter.io/developer/1560910813) | [KOPPA](https://appshunter.io/developer/1723235495) |

## What reviewers say

### Concremold

[App page](https://appshunter.io/ios/app/concremold/id1560910811)

**Features:** macOS Compatibility

**In-app purchases:** none


### Duosafe

[App page](https://appshunter.io/ios/app/duosafe/id6475053708)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Concremold free?

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

### Is Duosafe free?

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

### Do Concremold or Duosafe have ads?

Neither Concremold nor Duosafe shows ads.

### Which is updated more often, Concremold or Duosafe?

Concremold ships an update every 5 months, and Duosafe fortnightly. Most recently, Concremold was updated on October 2, 2026 and Duosafe on October 3, 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.*