# Time.Calc vs OneStop Pro®

The clearest difference is price: OneStop Pro® at Free against Time.Calc's $1.99. OneStop Pro® also leads on update cadence (every 3 weeks vs every 4 months). Time.Calc's advantage is iOS requirement (11.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

OneStop Pro® is free to download; Time.Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Time.Calc ships an update every 4 months, OneStop Pro® every 3 weeks. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Time.Calc | OneStop Pro® |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.9 (228 ratings)](https://appshunter.io/ios/app/timecalc/id326104948/reviews)** | — |
| Number of ratings | **228** | — |
| Positive reviews | 81.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 1 MB | 63 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Baliza GmbH](https://appshunter.io/developer/326104951) | [OneStop Pro®](https://appshunter.io/developer/1543227493) |

## What reviewers say

### Time.Calc

[App page](https://appshunter.io/ios/app/timecalc/id326104948)

This app simplifies complex time calculations with an intuitive interface. It supports both 24-hour and am/pm formats, making it ideal for managing flight logs, working hours, and general time-based tasks. Calculations can be easily shared or saved.

**Highlights:** Calculate duration between two times, Add and subtract durations, Flexible time unit input (hours, minutes, seconds), Configurable rounding options, Support for negative values, Email calculations or save to calendar

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Practical for time calculations
- 👍 Great for work hours
- 👍 Useful for payroll
- 👍 Converts to decimal format

**What reviewers complain about**

- 🐛 Inaccurate calculations over time
- 🐛 Unclear UI
- 🐛 Fuzzy text on iPhone XR
- 🐛 Decimal to normal time conversion not working
- 🐛 Cannot track multiple jobs/clients

**Reported bugs**

- Calculations become inaccurate after a while
- Decimal to normal time conversion does not work
- Inputting 19:47 rounds down to 19:00
- App crashes
- Calculations are off by two minutes

**Requested features**

- Add multiplication and division buttons
- Add multiplication function
- Add divide function
- Add (X) option for multiplication
- Add dual screen option


### OneStop Pro®

[App page](https://appshunter.io/ios/app/onestop-pro/id1543227491)

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

**In-app purchases:** none


## Frequently asked questions

### Is Time.Calc free?

Time.Calc costs $1.99, with no in-app purchases.

### Is OneStop Pro® free?

OneStop Pro® is free to download, with no in-app purchases.

### Do Time.Calc or OneStop Pro® have ads?

Neither Time.Calc nor OneStop Pro® shows ads.

### Which is updated more often, Time.Calc or OneStop Pro®?

Time.Calc ships an update every 4 months, and OneStop Pro® every 3 weeks. Most recently, Time.Calc was updated on October 20, 2026 and OneStop Pro® on October 6, 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.*