# Hadreeen Driver vs Date Calculation Assistant

The clearest difference is in-app purchases: Hadreeen Driver at none against Date Calculation Assistant's 2. Hadreeen Driver also leads on iOS requirement (13.0 vs 15.0). Date Calculation Assistant's advantage is update cadence (every 5 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Date Calculation Assistant sells 2 in-app purchases, starting at $0.99 per month. Hadreeen Driver asks for nothing beyond the download.

Hadreeen Driver ships an update every 4 months, Date Calculation Assistant every 5 days. The most recent releases landed on September 15, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Hadreeen Driver | Date Calculation Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Size | 44 MB | 35 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yaser Almotairi](https://appshunter.io/developer/1712708274) | [玉辉 黄](https://appshunter.io/developer/1852393919) |

## What reviewers say

### Hadreeen Driver

[App page](https://appshunter.io/ios/app/hadreeen-driver/id6470959657)

**Features:** macOS Compatibility

**In-app purchases:** none


### Date Calculation Assistant

[App page](https://appshunter.io/ios/app/date-calculation-assistant/id6758889725)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $5.99 | per year |


## Frequently asked questions

### Is Hadreeen Driver free?

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

### Is Date Calculation Assistant free?

Date Calculation Assistant is free to download, with in-app purchases available.

### Do Hadreeen Driver or Date Calculation Assistant have ads?

Neither Hadreeen Driver nor Date Calculation Assistant shows ads.

### Which is updated more often, Hadreeen Driver or Date Calculation Assistant?

Hadreeen Driver ships an update every 4 months, and Date Calculation Assistant every 5 days. Most recently, Hadreeen Driver was updated on September 15, 2026 and Date Calculation Assistant on September 13, 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.*