Date T Calc vs 100 Days After
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Date T Calc
Easily calculate future and past dates by adding or subtracting days, hours, and minutes. Determine the exact difference between two selected dates, with options for date-only or date-and-time calculations.
- Calculate future and past dates
- Determine date differences
- Operate in date-only or date-time modes
- Add/subtract date intervals
- Consider Daylight Saving Time
- Supports 12/24 hour format
- Internal help guide
Read full descriptionHide full description
Date T Calc can calculate future and past dates adding days, hours and minutes to a specified date. It can also calculate date difference between two dates you select. EASY TO USE • Add a date/time interval to a specific date guessing the future/past date • Calculate the difference from 2 dates • Operate in date only mode (calculating only days) or also considering hours and minutes • Add from a selected date a specified amount of days in a click • Switch at any time from guess date to date difference in a click • Can add or subtract date going in the future or in the past FEATURES • Operate in Date Guess mode guessing a date after adding days/hours/minutes • Operates in Date Difference mode selecting 2 date and indicating the difference • Operates in Date Mode (only days) or Date Time Mode, working with days, hours and minutes • Can switch at any time from Date Only Mode to Date Time Mode • Can add or subtract date intervals • Can guess future and paste date • Has a preset amount off days, hours ,minutes to add in a touch • Now button to set the current date in a click • Calculation consider also Daylight Saving Time when necessary • Date and time is displayed in your local country setting using 12 or 24 hour format • Internal Help User Guide ALL THE POWER OF iOS • Works both for any iPhone and any iPAD • Optimized for the latest generation iOS devices
100 Days After
Calculate the 100th day from any given date or celebrate anniversaries. Export calculated dates as events to your iPhone's calendar.
- Calculate 100th day from any date
- Celebrate anniversaries
- Export dates as calendar events
- New user interface
- New features
Read full descriptionHide full description
Do you know which date is the 100th day of your first date? Would you like to celebrate an anniversary from an event? This app '100 days after' allows you to calculate a date from any given spot in the calendar. Calculated dates can be exported as an event and added to your iPhone's calendar. Download now and experience the whole new user interface and features of '100 days after'!
Screenshots
Verdict
The clearest difference is price: 100 Days After at Free against Date T Calc's $0.99. 100 Days After also leads on update cadence (every 4 months vs every 17 months) and ratings volume (6 vs 1). Date T Calc's advantage is review sentiment (100% vs 62%). 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
100 Days After is free to download; Date T Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
100 Days After holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: 100 Days After has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Date T Calc's written reviews are positive against 62% of 100 Days After's, so the app with the better star average is not the one people write more warmly about.
Date T Calc ships an update every 17 months, 100 Days After every 4 months. Both last shipped on November 1, 2026.
| Parameter | Date T Calc | 100 Days After |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) | 4.2 (6 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 62.1% of reviews |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 17 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Roberto Panetta | Broong, Inc. |
Customer experience
Date T Calc
100 Days After
In-app purchases
Date T Calc
No in-app purchases
100 Days After
No in-app purchases
