# Date Calculation Assistant vs Date Calculator

The clearest difference is device support: Date Calculation Assistant at 3 against Date Calculator's 1. Date Calculation Assistant also leads on iOS requirement (15.0 vs 17.3). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Date Calculation Assistant sells 2 in-app purchases, starting at $0.99 per month and Date Calculator sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Date Calculation Assistant ships an update every 5 days, Date Calculator every 9 days. The most recent releases landed on September 13, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Date Calculation Assistant | Date Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/date-calculator-datemath/id6773030545/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 4 MB |
| Requires iOS | **15.0** | 17.3 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [玉辉 黄](https://appshunter.io/developer/1852393919) | [亦彬 潘](https://appshunter.io/developer/1522872222) |

## What reviewers say

### 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 |


### Date Calculator

[App page](https://appshunter.io/ios/app/date-calculator-datemath/id6773030545)

Easily calculate the duration between two dates, with options for minute-level precision. Customize themes and languages for a personalized experience. Enjoy local calculations without needing an account.

**Highlights:** Calculate days between dates, Optional time selection for minute precision, Clean, native iOS design, Theme and language settings, Local calculation without account

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $3.99 | per 7 days |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $19.99 | per year |
| Lifetime Premium | $29.99 | one-time |


## Frequently asked questions

### Is Date Calculation Assistant free?

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

### Is Date Calculator free?

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

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

Neither Date Calculation Assistant nor Date Calculator shows ads.

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

Date Calculation Assistant ships an update every 5 days, and Date Calculator every 9 days. Most recently, Date Calculation Assistant was updated on September 13, 2026 and Date Calculator on September 21, 2026.

---

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