# Date & Time Calculator vs Date Calculation Assistant

The clearest difference is ads: Date Calculation Assistant at none against Date & Time Calculator's shown. Date Calculation Assistant also leads on update cadence (every 5 days vs every 3 months). Date & Time Calculator's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Date & Time Calculator sells 2 in-app purchases, starting at $0.99 per month and Date Calculation Assistant sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Date & Time Calculator ships an update every 3 months, Date Calculation Assistant every 5 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Date & Time Calculator | Date Calculation Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (28 ratings)](https://appshunter.io/ios/app/date-and-time-calculator-days/id1667537169/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 114 MB | 35 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SHPAVDA, TOO](https://appshunter.io/developer/1779139180) | [玉辉 黄](https://appshunter.io/developer/1852393919) |

## What reviewers say

### Date & Time Calculator

[App page](https://appshunter.io/ios/app/date-and-time-calculator-days/id1667537169)

Calculate the duration between two dates, including workdays, or add/subtract time units to a specific date. This tool helps with planning, scheduling, and tracking time-sensitive tasks with a clean, minimalist interface.

**Highlights:** Count days, months, years between dates, Add or subtract date and time units, Calculate business days in a range, Add or subtract working days, Option to include start date, Light and dark themes, Offline availability

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Ad-Free | $0.99 | per month |
| Yearly Ad-Free | $9.99 | per year |


### Date Calculation Assistant

[App page](https://appshunter.io/ios/app/date-calculation-assistant/id6758889725)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $5.99 | per year |


## Frequently asked questions

### Is Date & Time Calculator free?

Date & Time Calculator is free to download, with in-app purchases available.

### Is Date Calculation Assistant free?

Date Calculation Assistant is free to download, with in-app purchases available.

### Do Date & Time Calculator or Date Calculation Assistant have ads?

Date & Time Calculator shows ads; Date Calculation Assistant does not.

### Which is updated more often, Date & Time Calculator or Date Calculation Assistant?

Date & Time Calculator ships an update every 3 months, and Date Calculation Assistant every 5 days. Most recently, Date & Time Calculator was updated on November 7, 2026 and Date Calculation Assistant on November 5, 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.*