# Date and time calc vs Calphace

The clearest difference is in-app purchases: Date and time calc at none against Calphace's 3. Calphace's advantage is update cadence (monthly vs every 11 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calphace sells 3 one-off in-app purchases. Date and time calc asks for nothing beyond the download.

Date and time calc ships an update every 11 months, Calphace monthly. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Date and time calc | Calphace |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 7 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Osamu Ishigami](https://appshunter.io/developer/901265058) | [Akihiro Usui](https://appshunter.io/developer/1387267485) |

## What reviewers say

### Date and time calc

[App page](https://appshunter.io/ios/app/date-and-time-calc/id949261920)

Easily calculate the difference between dates or add/subtract time intervals. This utility app simplifies date and time arithmetic with straightforward operations.

**Highlights:** Date difference calculation, Date addition and subtraction, Time difference calculation, Time addition and subtraction

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

**In-app purchases:** none


### Calphace

[App page](https://appshunter.io/ios/app/calphace/id1587107292)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snack-Sized Tip | $0.49 | one-time |
| Coffee-Sized Tip | $1.99 | one-time |
| Lunch-Sized Tip | $3.99 | one-time |


## Frequently asked questions

### Is Date and time calc free?

Date and time calc is free to download, with no in-app purchases.

### Is Calphace free?

Calphace is free to download, with in-app purchases available.

### Do Date and time calc or Calphace have ads?

Both Date and time calc and Calphace show ads.

### Which is updated more often, Date and time calc or Calphace?

Date and time calc ships an update every 11 months, and Calphace monthly. Most recently, Date and time calc was updated on October 29, 2026 and Calphace on October 27, 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.*