# Access Control by Shelly vs EVVA OpenOne

The clearest difference is update cadence: Access Control by Shelly at every 2 months against EVVA OpenOne's every 4 months. EVVA OpenOne's advantage is iOS requirement (13.0 vs 15.0). 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.

Access Control by Shelly ships an update every 2 months, EVVA OpenOne every 4 months. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Access Control by Shelly | EVVA OpenOne |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 10 MB | 414 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [SHELLY EUROPE EOOD](https://appshunter.io/developer/1521653049) | [EVVA OpenOne GmbH](https://appshunter.io/developer/1896615886) |

## What reviewers say

### Access Control by Shelly

[App page](https://appshunter.io/ios/app/access-control-by-shelly/id6474441948)

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

**In-app purchases:** none


### EVVA OpenOne

[App page](https://appshunter.io/ios/app/evva-openone/id6769239040)

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

**In-app purchases:** none


## Frequently asked questions

### Is Access Control by Shelly free?

Access Control by Shelly is free to download, with no in-app purchases.

### Is EVVA OpenOne free?

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

### Do Access Control by Shelly or EVVA OpenOne have ads?

Neither Access Control by Shelly nor EVVA OpenOne shows ads.

### Which is updated more often, Access Control by Shelly or EVVA OpenOne?

Access Control by Shelly ships an update every 2 months, and EVVA OpenOne every 4 months. Most recently, Access Control by Shelly was updated on October 26, 2026 and EVVA OpenOne on October 7, 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.*