To vs Whenr Whenr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
To
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Create a quick and easy to-do list.
Whenr Whenr
This app simplifies complex time calculations, helping you easily determine time differences, future times, and duration sums. It offers an intuitive interface and convenient options to copy, set reminders, or share results.
- Calculate time differences
- Determine future times
- Sum time durations
- Copy results to clipboard
- Create reminders from results
- Share time calculations
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Doing math with dates and times is hard. Whenr Whenr makes it easy, with a simple calculator-style interface for dates, times, durations, and unit conversions. There are no awkward forms, no modes to switch between, and no workflows to learn. Just type in your values, select the function you want to apply, and get your answer. With Whenr Whenr you can: - Answer time questions quick and easy. For example, calculate “how long is it from now until 7:42?” or “what time will it be in 4 hours and 47 minutes?”? - Count days between dates, add weeks to a date, or work across months without manually counting. - Make schedules easier to reason about. Figure out equal turns, manipulate durations, split time fairly, and keep plans running smoothly. - Make weird durations readable. Convert amounts like 400 hours into weeks, 5,000 minutes into days, or 10,000 seconds into hours, so you can actually think about them. And it does all this in a familiar calculator-style interface - not a maze of tabs and dropdowns. There's no mode switching, no confusing forms, and no translating your question into an app's weird logic. You just enter dates and times using the keypad and get the right answer fast.
Screenshots
Verdict
To and Whenr Whenr are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
To ships an update every 41 months, Whenr Whenr every 22 months. The most recent releases landed on October 17, 2026 and October 19, 2026 respectively.
| Parameter | To | Whenr Whenr |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 41 months | Every 22 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.6 — better | 16.1 |
| Further details — not scored | ||
| Size | 28 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Edwin Mejia | Darin Kelkhoff |
In-app purchases
To
No in-app purchases
Whenr Whenr
No in-app purchases









