# ZMI vs io

The clearest difference is iOS requirement: ZMI at 11.0 against io's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

ZMI ships an update every 3 months, io every 4 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ZMI | io |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | — |
| Size | 38 MB | 82 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZMI GmbH](https://appshunter.io/developer/1153523753) | [bellmatec GmbH & Co. KG](https://appshunter.io/developer/1382368024) |

## What reviewers say

### ZMI

[App page](https://appshunter.io/ios/app/zmi-app/id1153523754)

This app allows for comprehensive time tracking and HR process digitalization for mobile employees. It supports real-time or retroactive booking of work, travel, and project times, with features like barcode scanning and offline storage.

**Highlights:** Mobile time and travel booking, Order and project time tracking, Barcode scanning for bookings, Absence and team booking, GPS location tracking, Offline data storage, Workflow requests for leave and corrections

**In-app purchases:** none


### io

[App page](https://appshunter.io/ios/app/iodrive/id1610528025)

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

**In-app purchases:** none


## Frequently asked questions

### Is ZMI free?

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

### Is io free?

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

### Do ZMI or io have ads?

Neither ZMI nor io shows ads.

### Which is updated more often, ZMI or io?

ZMI ships an update every 3 months, and io every 4 months. Most recently, ZMI was updated on October 13, 2026 and io on October 10, 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.*