DateDiff vs Days Alive Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DateDiff
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.
- 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
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An app for calculating the end of a license. It allows setting up the 2 dates and it will calculate how many days are in between, allowing ignore weekends or not. Also, it allows setting up a start date and a number of days and it will calculate the end date. Even more, it let you pin start date as always today to have a days countdown to a specific date.
Days Alive Calculator
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Days Alive Calculator shows you exactly which day of your life you’re on — and lets you explore time in new ways. See your life as one continuous line, starting from Day 1. Features: • See what Day you’re on today • Discover what day of the week you were born • Calculate what Day number corresponds to any date • Calculate what date corresponds to any Day number • See how many days are between two dates • Count down to upcoming events • Set reminders for milestones like Day 5,000th, 10,000th, 15,000th, and beyond • Home Screen widgets • Lock Screen widgets • Apple Watch app and complications • Optional milestone and birthday reminders • English and Japanese support No accounts. No ads. No tracking. Just time — counted clearly.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | DateDiff | Days Alive Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 9.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 52 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | David Vives | Nathaniel Garrett Davis |
In-app purchases
DateDiff
No in-app purchases
Days Alive Calculator
No in-app purchases
Questions
Is DateDiff free?
Is Days Alive Calculator free?
Do DateDiff or Days Alive Calculator have ads?
Which is updated more often, DateDiff or Days Alive Calculator?
Other comparisons
