# Back vs Date.Time Calculator

The clearest difference is review sentiment: Back at 100% against Date.Time Calculator's 0%. Back also leads on chart position (#171 vs unranked) and iOS requirement (13.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Back ships an update every 7 months, Date.Time Calculator every 5 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Back | Date.Time Calculator |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/back-time-calculator/id429892615/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Best chart rank | **#171** | — |
| Size | 4 MB | 1 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Goodman Productions](https://appshunter.io/developer/415454974) | [Noriaki HASHIBA](https://appshunter.io/developer/978336077) |

## What reviewers say

### Back

[App page](https://appshunter.io/ios/app/back-time-calculator/id429892615)

**Currently charting:** #171 Top Paid · Utilities (US App Store)

This utility app subtracts entered time values from a starting point of 60:00. It allows for easy deletion of individual entries or clearing all values to start fresh. Ideal for quick time calculations.

**Highlights:** Subtracts entered time values, Starts at 60:00, AC button to clear all, Swipe to delete individual entries, Simple user interface

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Back free?

Back costs $0.99, with no in-app purchases.

### Is Date.Time Calculator free?

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

### Do Back or Date.Time Calculator have ads?

Neither Back nor Date.Time Calculator shows ads.

### Which is updated more often, Back or Date.Time Calculator?

Back ships an update every 7 months, and Date.Time Calculator every 5 months. Most recently, Back was updated on September 22, 2026 and Date.Time Calculator on September 9, 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.*