# NIO Zen Smart Lock vs Altrefiamme

NIO Zen Smart Lock and Altrefiamme are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | NIO Zen Smart Lock | Altrefiamme |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 13 MB | 19 MB |
| Requires iOS | **13.0** | 14.1 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Evva Italia srl](https://appshunter.io/developer/1561615007) | [Altrefiamme Srl](https://appshunter.io/developer/1717381342) |

## What reviewers say

### NIO Zen Smart Lock

[App page](https://appshunter.io/ios/app/nio-zen-smart-lock/id1561615005)

This smart lock system offers automatic locking with high-security modular cylinders. It installs on any door without modifications and can be configured via smartphone or dedicated remote. Access is granted through various methods including biometric and RFID.

**Highlights:** Automatic locking, High-security modular cylinders, Easy installation on any door, Smartphone configuration via Bluetooth, Multiple access methods (RFID, biometric, keypad), Access logging and user management, Long-lasting rechargeable batteries

**Features:** macOS Compatibility

**In-app purchases:** none


### Altrefiamme

[App page](https://appshunter.io/ios/app/altrefiamme/id6472643266)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NIO Zen Smart Lock free?

NIO Zen Smart Lock is free to download, with no in-app purchases.

### Is Altrefiamme free?

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

### Do NIO Zen Smart Lock or Altrefiamme have ads?

Neither NIO Zen Smart Lock nor Altrefiamme shows ads.

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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.*