Date and Time Checker vs Grind Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Date and Time Checker
Easily calculate elapsed time, dates, and durations with multiple calculation formats. Save your results as a history for quick reference. Ideal for tracking work hours, travel time, or significant dates.
- Calculate elapsed time (hours, minutes, seconds)
- Calculate elapsed dates (days, weeks, months, years)
- Add or subtract time/dates
- Set alert notifications for calculated times/dates
- Save calculation results as history
- Option to include/exclude first day in date calculations
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"Date and Time Checker" is an application that can easily calculate the date, number of days, time, etc.Multiple calculation formats are available for various applications. The following calculation formats are available. 1. "End time - Start time" 2. "Specified time ± Elapsed time" 3. "End date - Start date" 4. "Specified date ± Elapsed date" 1. "End time - Start time" Calculate the elapsed time from the start time to the end time (hour / minute / second, etc.). It is also possible to exclude any time (minutes). 2. "Specified time ± Elapsed time" Calculate the elapsed time (later / ago) from the specified time. It is also possible to receive an alert notification at the calculated time. 3. "End date - Start date" Calculate the elapsed days (days / weeks / months / years, etc.) from the start date to the end date. You can choose to calculate the first day as 0 day or 1 day. 4. "Specified date ± Elapsed date" Calculate the elapsed date (later / ago) from the specified date. It is also possible to receive an alert notification on the calculated date. You can save the calculation results and check them as a history. 【Use cases of Date and Time Checker】 ・ Calculation of working hours ・ Calculation of overtime hours ・ Calculation of sleep time ・ Calculation of possible stay time ・ Calculation of work time ・ Calculation of waiting time ・ Back calculation of departure time ・ Calculation of travel time ・ Calculation of end time of abandoned game ・ Check how many days have passed since you were born ・ Calculate how many years have passed since you purchased ・etc Use the Date and Time Checker to quickly check the cumbersome date and days calculations.
Grind Timer
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GrindTimer is more than a habit tracker — it's a focus timer designed to help you turn your time into skills. Whether you're working on a side hustle, studying for a certification, or building creative output, GrindTimer makes your effort visible. Set a monthly time goal, and the app automatically calculates how much you need to do each day. Every session you clock in brings you closer to your goal — no guesswork, just real progress. AI gives you written feedback on your performance, helping you reflect and stay motivated. And with a visual calendar and ranking system, you can see how far you've come — and who's on the journey with you. Features Set monthly or daily time goals — daily targets are auto-calculated Record activity with a built-in timer using Clock In / Clock Out buttons Review your activity on a color-coded calendar Get AI-generated written feedback on your effort (Premium) Compare progress with others via the Ranking system (Premium) Manage multiple goals across categories like Study, Work, or Hobby Focus without ads (optional Premium upgrade) Final CTA Don’t just build habits — build your future. Turn your time into skills with GrindTimer. Start today. Terms of Servise : https://skillful-filament-bce.notion.site/Terms-of-Service-21057a3f131b80f893bdddd96226725d?source=copy_link #habittracker #timemanagement #sidehustle #study #ai #productivity #ranking
Screenshots
Verdict
The clearest difference is ads: Grind Timer at none against Date and Time Checker's shown. Grind Timer also leads on update cadence (every 5 days vs every 3 months) and iOS requirement (12.0 vs 16.0). 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. Date and Time Checker sells 2 one-off in-app purchases and Grind Timer sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Date and Time Checker ships an update every 3 months, Grind Timer every 5 days. The most recent releases landed on September 28, 2026 and September 27, 2026 respectively.
| Parameter | Date and Time Checker | Grind Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | mitsuhiro nara | Yuuki Nagata |
In-app purchases
Date and Time Checker
- Remove Ads$3.99
- Export to File$3.99
Grind Timer
- Premium Plan$4.991 Month
Questions
Is Date and Time Checker free?
Is Grind Timer free?
Do Date and Time Checker or Grind Timer have ads?
Which is updated more often, Date and Time Checker or Grind Timer?
Other comparisons
