Whenlyy vs Date Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Whenlyy
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It is an application where you can see how many years, months, weeks, days or minutes are left or how much time has passed since this date, where you can set a notification for each date, and where you can see these dates as widgets.
Date Calculator
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.
- Calculate days between dates
- Optional time selection for minute precision
- Clean, native iOS design
- Theme and language settings
- Local calculation without account
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DateMath helps you quickly calculate the time between two dates. Choose a start date and an end date to see the number of days between them. When you need more precision, turn on Show Time to select hours and minutes and view the interval as days, hours, and minutes. Key Features: • Calculate days between two dates • Optional time selection for minute-level results • Clean, native iOS design • Theme and language settings • Local calculation without an account Premium access unlocks unlimited calculations, continued updates, and an ad-free experience. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Date Calculator at every 9 days against Whenlyy's every 4 months. On price, ads, 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. Whenlyy sells 1 one-off in-app purchase and Date Calculator sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Whenlyy ships an update every 4 months, Date Calculator every 9 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.
| Parameter | Whenlyy | Date Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 — better | 17.3 |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Erkmen Ergul | 亦彬 潘 |
In-app purchases
Whenlyy
- Whenly Premium$1.79
Date Calculator
- Weekly Subscription3 Days trial$3.997 Days
- Monthly Subscription$4.991 Month
- Yearly Subscription$19.991 Year
- Lifetime Premium$29.99
