# DateDiff vs Days Alive Calculator

The clearest difference is ads: Days Alive Calculator at none against DateDiff's shown. Days Alive Calculator also leads on update cadence (weekly vs every 5 weeks). DateDiff's advantage is iOS requirement (9.0 vs 17.2). On price, in-app purchases and device support there is nothing between them.

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

DateDiff ships an update every 5 weeks, Days Alive Calculator weekly. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | DateDiff | Days Alive Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/datediff/id1164312493/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 52 MB | 9 MB |
| Requires iOS | **9.0** | 17.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [David Vives](https://appshunter.io/developer/1164312492) | [Nathaniel Garrett Davis](https://appshunter.io/developer/1803271714) |

## 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


### Days Alive Calculator

[App page](https://appshunter.io/ios/app/days-alive-calculator/id6759188772)

**In-app purchases:** none


## Frequently asked questions

### Is DateDiff free?

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

### Is Days Alive Calculator free?

Days Alive Calculator is free to download, with no in-app purchases.

### Do DateDiff or Days Alive Calculator have ads?

DateDiff shows ads; Days Alive Calculator does not.

### Which is updated more often, DateDiff or Days Alive Calculator?

DateDiff ships an update every 5 weeks, and Days Alive Calculator weekly. Most recently, DateDiff was updated on October 20, 2026 and Days Alive Calculator on October 11, 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.*