# Date and Time Calculator Pro vs 2fauth

The clearest difference is update cadence: Date and Time Calculator Pro at every 5 weeks against 2fauth's every 11 months. 2fauth's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Date and Time Calculator Pro costs $0.99 and 2fauth $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Date and Time Calculator Pro ships an update every 5 weeks, 2fauth every 11 months. The most recent releases landed on September 29, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Date and Time Calculator Pro | 2fauth |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[4.8 (947 ratings)](https://appshunter.io/ios/app/date-and-time-calculator-pro/id582268389/reviews)** | — |
| Number of ratings | **947** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 11 months |
| Monetization | Free | — |
| Size | 3 MB | 33 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [山 钟](https://appshunter.io/developer/1289109809) | [重阳 石](https://appshunter.io/developer/1712525703) |

## What reviewers say

### Date and Time Calculator Pro

[App page](https://appshunter.io/ios/app/date-and-time-calculator-pro/id582268389)

Calculate the precise time difference between any two dates and times, down to the second.  Easily determine future or past dates based on a specified duration. Ideal for tracking events, financial periods, or personal milestones.

**Highlights:** Calculate time distance between dates, Calculate days after a specific date, Calculate date before a specific date, Second-level precision, Period time calculation

**In-app purchases:** none

**What reviewers like**

- 👍 Extremely useful
- 👍 Great app
- 👍 Excellent tool
- 👍 Useful
- 👍 Perfect app

**What reviewers complain about**

- 🐛 Ads even after buying
- 🐛 Paid for app but still has ads
- 🐛 Pro version has ads
- 🐛 Can't reinstall my purchased app

**Reported bugs**

- Paid version has lost the ability to calculate future dates based on weeks
- Date selection uses a scroll wheel instead of keypad entry
- Unable to copy or share calculation results

**Requested features**

- Add ability to change year for date time calculation
- Implement dark mode
- Add iPad version
- Add divide option in time calculator
- Add ability to calculate working days


### 2fauth

[App page](https://appshunter.io/ios/app/2fauth/id6741684348)

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

**In-app purchases:** none


## Frequently asked questions

### Is Date and Time Calculator Pro free?

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

### Is 2fauth free?

2fauth costs $0.99, with no in-app purchases.

### Do Date and Time Calculator Pro or 2fauth have ads?

Neither Date and Time Calculator Pro nor 2fauth shows ads.

### Which is updated more often, Date and Time Calculator Pro or 2fauth?

Date and Time Calculator Pro ships an update every 5 weeks, and 2fauth every 11 months. Most recently, Date and Time Calculator Pro was updated on September 29, 2026 and 2fauth on September 15, 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.*