# Date.Time Calculator vs Date & Task Deadline Planner

The clearest difference is price: Date & Task Deadline Planner at Free against Date.Time Calculator's $0.99. Date & Task Deadline Planner also leads on iOS requirement (13.0 vs 15.6). Date.Time Calculator's advantage is ads (none vs shown). On update cadence, in-app purchases and device support there is nothing between them.

Date & Task Deadline Planner is free to download; Date.Time Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Date.Time Calculator ships an update every 5 months, Date & Task Deadline Planner every 8 months. The most recent releases landed on November 1, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Date.Time Calculator | Date & Task Deadline Planner |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 8 months |
| Monetization | Paid | — |
| Size | 1 MB | 23 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Noriaki HASHIBA](https://appshunter.io/developer/978336077) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## What reviewers say

### Date.Time Calculator

[App page](https://appshunter.io/ios/app/datetime-calculator/id978336078)

Calculate date and time differences, intervals, and perform unit conversions with a pure calculator interface. Useful for determining future or past dates, calculating total time for multiple events, and converting between various time units and POSIX time.

**Highlights:** Date and time point calculations, Time interval calculations, Unit conversion of time, POSIX time interconversion, Time zone mutual conversion, Arithmetic operations with time

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

**In-app purchases:** none


### Date & Task Deadline Planner

[App page](https://appshunter.io/ios/app/date-and-task-deadline-planner/id6744109310)

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

**In-app purchases:** none


## Frequently asked questions

### Is Date.Time Calculator free?

Date.Time Calculator costs $0.99, with no in-app purchases.

### Is Date & Task Deadline Planner free?

Date & Task Deadline Planner is free to download, with no in-app purchases.

### Do Date.Time Calculator or Date & Task Deadline Planner have ads?

Date & Task Deadline Planner shows ads; Date.Time Calculator does not.

### Which is updated more often, Date.Time Calculator or Date & Task Deadline Planner?

Date.Time Calculator ships an update every 5 months, and Date & Task Deadline Planner every 8 months. Most recently, Date.Time Calculator was updated on November 1, 2026 and Date & Task Deadline Planner on November 12, 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.*