# DateDiff vs Date Calculator

The clearest difference is in-app purchases: DateDiff at none against Date Calculator's 4. DateDiff also leads on ratings volume (4 vs 1) and device support (3 vs 1). Date Calculator's advantage is ads (none vs shown). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Date Calculator sells 4 in-app purchases, starting at $3.99 per 7 days. DateDiff asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for DateDiff against 5.0 for Date Calculator. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

DateDiff ships an update every 5 weeks, Date Calculator monthly. The most recent releases landed on November 2, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | DateDiff | Date Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/datediff/id1164312493/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/date-calculator-datemath/id6773030545/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 52 MB | 5 MB |
| Requires iOS | **9.0** | 17.3 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [David Vives](https://appshunter.io/developer/1164312492) | [亦彬 潘](https://appshunter.io/developer/1522872222) |

## What reviewers say

### DateDiff

[App page](https://appshunter.io/ios/app/datediff/id1164312493)

Calculate the duration between two dates, with options to include or exclude weekends. It can also determine an end date based on a start date and a duration, or function as a countdown timer from today to a specific event.

**Highlights:** Calculate days between two dates, Include or exclude weekends, Calculate end date from start date and duration, Countdown timer from today, Pin start date as today

**In-app purchases:** none


### Date Calculator

[App page](https://appshunter.io/ios/app/date-calculator-datemath/id6773030545)

Easily calculate the duration between two dates, with options for minute-level precision. Customize themes and languages for a personalized experience. Enjoy local calculations without needing an account.

**Highlights:** Calculate days between dates, Optional time selection for minute precision, Clean, native iOS design, Theme and language settings, Local calculation without account

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $3.99 | per 7 days |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $19.99 | per year |
| Lifetime Premium | $29.99 | one-time |


## Frequently asked questions

### Is DateDiff free?

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

### Is Date Calculator free?

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

### Which has better reviews, DateDiff or Date Calculator?

DateDiff and Date Calculator are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do DateDiff or Date Calculator have ads?

DateDiff shows ads; Date Calculator does not.

### Which is updated more often, DateDiff or Date Calculator?

DateDiff ships an update every 5 weeks, and Date Calculator monthly. Most recently, DateDiff was updated on November 2, 2026 and Date Calculator on November 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.*