# eZo Checkin vs SmartKey

The clearest difference is update cadence: SmartKey at every 2 months against eZo Checkin's every 14 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.

eZo Checkin ships an update every 14 months, SmartKey every 2 months. The most recent releases landed on May 20, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | eZo Checkin | SmartKey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 months** |
| Size | 28 MB | 4 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Helixmob](https://appshunter.io/developer/529060675) | [Geo Taxi LLC](https://appshunter.io/developer/1479129662) |

## What reviewers say

### eZo Checkin

[App page](https://appshunter.io/ios/app/ezo-checkin/id1491959067)

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartKey

[App page](https://appshunter.io/ios/app/smartkey-access-control/id6469455536)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is eZo Checkin free?

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

### Is SmartKey free?

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

### Do eZo Checkin or SmartKey have ads?

Neither eZo Checkin nor SmartKey shows ads.

### Which is updated more often, eZo Checkin or SmartKey?

eZo Checkin ships an update every 14 months, and SmartKey every 2 months. Most recently, eZo Checkin was updated on May 20, 2026 and SmartKey on September 23, 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.*