# Time Calculator vs Open Working Hours

The clearest difference is in-app purchases: Open Working Hours at none against Time Calculator's 2. Open Working Hours also leads on ads (none vs shown) and update cadence (weekly vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Time Calculator sells 2 in-app purchases, starting at $0.99 per month. Open Working Hours asks for nothing beyond the download.

Time Calculator ships an update monthly, Open Working Hours weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Time Calculator | Open Working Hours |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/time-calculator-hours-and-math/id6450843604/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 63 MB | 37 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Barnasoba, S.L.](https://appshunter.io/developer/1823395954) | [Lukas Hondrich](https://appshunter.io/developer/1854184939) |

## What reviewers say

### Time Calculator

[App page](https://appshunter.io/ios/app/time-calculator-hours-and-math/id6450843604)

Easily calculate the exact time elapsed between two specific moments. Input your start and end times to get instant results, perfect for timing tasks, work, or scheduling. Offers flexibility with 12 or 24-hour formats and detailed second-by-second breakdowns.

**Highlights:** Calculate time between any two clock times, 12-hour or 24-hour format selection, Optional display of hours, minutes, and seconds, Fast and user-friendly interface, No user data tracking or saving

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

**In-app purchases (2)**

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


### Open Working Hours

[App page](https://appshunter.io/ios/app/open-working-hours/id6755491395)

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

**In-app purchases:** none


## Frequently asked questions

### Is Time Calculator free?

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

### Is Open Working Hours free?

Open Working Hours is free to download, with no in-app purchases.

### Do Time Calculator or Open Working Hours have ads?

Time Calculator shows ads; Open Working Hours does not.

### Which is updated more often, Time Calculator or Open Working Hours?

Time Calculator ships an update monthly, and Open Working Hours weekly. Most recently, Time Calculator was updated on October 24, 2026 and Open Working Hours on October 28, 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.*