# Date T Calc vs BDT

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.

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.

## The numbers

| Metric | Date T Calc | BDT |
| --- | --- | --- |
| Price | **$0.99** | $4.99 |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/date-t-calc/id426018218/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bdt/id1556522369/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 17 months** | Every 36 months |
| Monetization | Paid | Paid |
| Size | 1 MB | 44 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roberto Panetta](https://appshunter.io/developer/1438480110) | [Jervis Thompson](https://appshunter.io/developer/1556522371) |

## What reviewers say

### Date T Calc

[App page](https://appshunter.io/ios/app/date-t-calc/id426018218)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### BDT

[App page](https://appshunter.io/ios/app/bdt/id1556522369)

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.

**Highlights:** View birthdays from contacts, Sort by birthdate, Highlight next upcoming birthday, Deep link to contacts, Display age and zodiac sign

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Date T Calc free?

Date T Calc costs $0.99, with no in-app purchases.

### Is BDT free?

BDT costs $4.99, with no in-app purchases.

### Which has better reviews, Date T Calc or BDT?

BDT is rated higher. Date T Calc averages 4.0 out of 5 from 1 ratings, while BDT averages 5.0 from 3 ratings.

### Do Date T Calc or BDT have ads?

Neither Date T Calc nor BDT shows ads.

### Which is updated more often, Date T Calc or BDT?

Date T Calc ships an update every 17 months, and BDT every 36 months. Most recently, Date T Calc was updated on October 3, 2026 and BDT on October 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*