Date and Time Calculator Pro vs Simple Calculator. +
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Date and Time Calculator Pro
Calculate the precise time difference between any two dates and times, down to the second. Easily determine future or past dates based on a specified duration. Ideal for tracking events, financial periods, or personal milestones.
- Calculate time distance between dates
- Calculate days after a specific date
- Calculate date before a specific date
- Second-level precision
- Period time calculation
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Want to know how many days you can receive the Christmas gift? Want to know how many days you will have the college entrance exam?Want to know how many days the 158-day wealth management product expired? This tool helps you to calculate the distance between any time, down to second. It can also calculate the day after that day between any time. This tool is not only for wealth management but also for period time. It can tell you the date before or after a certain period.
Simple Calculator. +
This app offers a straightforward and dependable calculator for iPhone and iPad. It includes advanced features like tax calculation, cost/selling price/margin calculations, and memory operations. A free version is available to try before purchasing.
- 12-digit display
- Tax calculation
- Cost, selling price, and gross margin calculations
- Memory operations
- Grand total (GT)
- Percentage calculation
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Simple, reliable, and easy-to-use calculator app for iPhone/ iPad. If you would like to try out the calculator first, download the FREE version of the app from the developer profile. Calculator features:- * 12 digits * Tax calculation * Percentage (%) * Cost/ selling price/ gross margin calculations * Memory operations * Grand total (GT) * Square root * +/- (Sign change) * Arithmetic constant calculation * Digit grouping and decimal mark as per device locale
Screenshots
Verdict
Date and Time Calculator Pro and Simple Calculator. + both sit at 4.8 stars, but that hides the real split: 89% of Date and Time Calculator Pro's written reviews are positive against 73% of Simple Calculator. +'s. Date and Time Calculator Pro also leads on update cadence (every 5 weeks vs every 3 months) and ratings volume (959 vs 147). On rating, 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
Date and Time Calculator Pro costs $0.99 and Simple Calculator. + $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for Date and Time Calculator Pro against 4.7 for Simple Calculator. +. That said, the two scores are not equally well evidenced: Date and Time Calculator Pro has 959 ratings behind it against 147, so its average is the more settled of the two. Written reviews are what separate them: 89% of Date and Time Calculator Pro's written reviews are positive against 73% of Simple Calculator. +'s.
Date and Time Calculator Pro ships an update every 5 weeks, Simple Calculator. + every 3 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Date and Time Calculator Pro | Simple Calculator. + |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | 4.8 (959 ratings) — better | 4.7 (147 ratings) |
| Positive reviews | 88.9% of reviews — better | 72.7% of reviews |
| Number of ratings | 959 — better | 147 |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | 山 钟 | tasser gyati |
Customer experience
Date and Time Calculator Pro
Simple Calculator. +
Bugs and requests
Date and Time Calculator Pro
Reported bugs
3 issues- Paid version has lost the ability to calculate future dates based on weeks
- Date selection uses a scroll wheel instead of keypad entry
- Unable to copy or share calculation results
Requested features
5 requests- Add ability to change year for date time calculation
- Implement dark mode
- Add iPad version
- Add divide option in time calculator
- Add ability to calculate working days
Simple Calculator. +
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Date and Time Calculator Pro
No in-app purchases
Simple Calculator. +
No in-app purchases
Questions
Is Date and Time Calculator Pro free?
Is Simple Calculator. + free?
Which has better reviews, Date and Time Calculator Pro or Simple Calculator. +?
Do Date and Time Calculator Pro or Simple Calculator. + have ads?
Which is updated more often, Date and Time Calculator Pro or Simple Calculator. +?
Other comparisons
