# Fermax DuoxMe vs CupiCan

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

Both are free to download. Fermax DuoxMe sells 2 in-app purchases, starting at $2.00 per month. CupiCan asks for nothing beyond the download.

Fermax DuoxMe ships an update monthly, CupiCan every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fermax DuoxMe | CupiCan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (263 ratings)](https://appshunter.io/ios/app/fermax-duoxme/id1442204916/reviews)** | — |
| Number of ratings | **263** | — |
| Positive reviews | 55.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 150 MB | 55 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [Fermax](https://appshunter.io/developer/891332024) | [Fremmenn Dynamics S.L.](https://appshunter.io/developer/1713290314) |

## What reviewers say

### Fermax DuoxMe

[App page](https://appshunter.io/ios/app/fermax-duoxme/id1442204916)

Control your Fermax video door entry system remotely. Answer calls, open doors, and check visitors from anywhere in the world. Share digital keys securely with family and friends, simplifying access to your home.

**Highlights:** Answer video door calls remotely, Open doors instantly, Check visitor history, Share digital keys, Connect via Wi-Fi monitor or Fermax CONNECT

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Monthly | $2.00 | per month |
| Unlimited annual | $17.00 | per year |


### CupiCan

[App page](https://appshunter.io/ios/app/cupican/id6780609371)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fermax DuoxMe free?

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

### Is CupiCan free?

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

### Do Fermax DuoxMe or CupiCan have ads?

Neither Fermax DuoxMe nor CupiCan shows ads.

### Which is updated more often, Fermax DuoxMe or CupiCan?

Fermax DuoxMe ships an update monthly, and CupiCan every 2 days. Most recently, Fermax DuoxMe was updated on October 24, 2026 and CupiCan on October 25, 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.*