Date T Calc vs BDT
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
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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
BDT
Easily track all important dates with this iPhone companion. It displays upcoming birthdays from your contacts, showing ages and zodiac signs. Stay organized and never miss a celebration.
- View birthdays from contacts
- Sort by birthdate
- Highlight next upcoming birthday
- Deep link to contacts
- Display age and zodiac sign
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Introducing the ultimate birthday companion for your iPhone. Never miss a friend or family member's special day again! With this app, you can easily view all the birthdays stored in your Contacts app sorted by birthdate. The app highlights the next upcoming birthday making it easier for you to plan ahead. It also deep links to your contacts app. Plus, it even displays people’s age and zodiac sign, making it a fun and interactive way to stay organized. Download Birthdays today and make sure you never forget a birthday ever again!
Screenshots
Verdict
The clearest difference is rating: BDT at 5.0 against Date T Calc's 4.0. BDT also leads on ratings volume (3 vs 1). Date T Calc's advantage is price ($0.99 vs $4.99) and update cadence (every 17 months vs every 36 months). On review sentiment, ads, in-app purchases and monetization model 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 T Calc costs $0.99 and BDT $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BDT holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Date T Calc ships an update every 17 months, BDT every 36 months. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.
| Parameter | Date T Calc | BDT |
|---|---|---|
| Price | $0.99 — better | $4.99 |
| Rating | 4.0 (1 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 17 months — better | Every 36 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Roberto Panetta | Jervis Thompson |
Customer experience
Date T Calc
BDT
In-app purchases
Date T Calc
No in-app purchases
BDT
No in-app purchases









