# Guard Time vs IDU (OS)

The clearest difference is update cadence: IDU (OS) at monthly against Guard Time's every 4 months. Guard Time's advantage is iOS requirement (8.0 vs 16.4). On price, review sentiment, 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.

Guard Time ships an update every 4 months, IDU (OS) monthly. The most recent releases landed on September 29, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Guard Time | IDU (OS) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | Free |
| Size | 96 MB | 213 MB |
| Requires iOS | **8.0** | 16.4 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Zenshifts Holdings Pty Ltd](https://appshunter.io/developer/1126232445) | [IDU Identification](https://appshunter.io/developer/1500702804) |

## What reviewers say

### Guard Time

[App page](https://appshunter.io/ios/app/guard-time/id1420325941)

Transform your iPad into a cloud-based time and attendance system. This tool allows employees to easily clock in and out, tracking work hours, breaks, and unplanned tasks. It integrates with a workforce management system to accurately calculate pay and export data to payroll, streamlining business operations.

**Highlights:** iPad time and attendance system, Employee clock-in/out tracking, Track start, end, and break times, Calculate hours to be paid, Export approved hours to payroll, Streamline employee scheduling

**Features:** macOS Compatibility

**In-app purchases:** none


### IDU (OS)

[App page](https://appshunter.io/ios/app/idu-os/id1558378587)

This app is a digital identity authenticator designed for businesses to efficiently manage clients. It can accurately scan and recognize over 1000 types of international identity documents, including passports and driver's licenses, streamlining entry processes.

**Highlights:** Digital ID authenticator, Client management solution, Scan 1000+ international ID documents, Supports passports, driver's licenses, proof of age cards, Efficient and accurate verification, Streamlines entry processes

**In-app purchases:** none


## Frequently asked questions

### Is Guard Time free?

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

### Is IDU (OS) free?

IDU (OS) is free to download, with no in-app purchases.

### Do Guard Time or IDU (OS) have ads?

Neither Guard Time nor IDU (OS) shows ads.

### Which is updated more often, Guard Time or IDU (OS)?

Guard Time ships an update every 4 months, and IDU (OS) monthly. Most recently, Guard Time was updated on September 29, 2026 and IDU (OS) 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.*