# The Date Calculator PRO vs Regle

The clearest difference is in-app purchases: Regle at none against The Date Calculator PRO's 7. Regle also leads on ads (none vs shown) and update cadence (every 2 days vs every 4 months). On price and device support there is nothing between them.

Both are free to download. The Date Calculator PRO sells 7 in-app purchases, starting at $1.99 per 7 days. Regle asks for nothing beyond the download.

The Date Calculator PRO ships an update every 4 months, Regle every 2 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | The Date Calculator PRO | Regle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.6K ratings)](https://appshunter.io/ios/app/the-date-calculator-pro/id1045043882/reviews)** | — |
| Number of ratings | **2.6K** | — |
| Positive reviews | 65.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 60 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) | [iSelect-Sarl](https://appshunter.io/developer/1603993383) |

## What reviewers say

### The Date Calculator PRO

[App page](https://appshunter.io/ios/app/the-date-calculator-pro/id1045043882)

Easily calculate the duration between two dates, with or without accounting for the time of day. You can also add or subtract various time units from a specific date. The results are automatically converted into multiple units for your convenience.

**Highlights:** Calculate duration between two dates, Include time of day in calculations, Add/subtract years, months, weeks, days, Convert results to various time units, Account for daylight saving time changes

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per 7 days |
| Premium | $3.99 | per month |
| Premium | $3.99 | per month |
| Voluntary Payment 1 | $0.99 | one-time |
| Voluntary Payment 2 | $2.99 | one-time |
| Voluntary Payment 3 | $9.99 | one-time |
| Remove Ads | $12.99 | one-time |


### Regle

[App page](https://appshunter.io/ios/app/regle/id6760955916)

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

**In-app purchases:** none


## Frequently asked questions

### Is The Date Calculator PRO free?

The Date Calculator PRO is free to download, with in-app purchases available.

### Is Regle free?

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

### Do The Date Calculator PRO or Regle have ads?

The Date Calculator PRO shows ads; Regle does not.

### Which is updated more often, The Date Calculator PRO or Regle?

The Date Calculator PRO ships an update every 4 months, and Regle every 2 days. Most recently, The Date Calculator PRO was updated on October 29, 2026 and Regle on October 25, 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.*