# KuCalc vs Pro OnTime

The clearest difference is update cadence: Pro OnTime at fortnightly against KuCalc's every 3 months. KuCalc's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KuCalc ships an update every 3 months, Pro OnTime fortnightly. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | KuCalc | Pro OnTime |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 1 MB | 37 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Mineaki Sakatoku](https://appshunter.io/developer/1674976728) | [SIDEREAL TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1481462615) |

## What reviewers say

### KuCalc

[App page](https://appshunter.io/ios/app/kucalc/id6445941447)

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

**In-app purchases:** none


### Pro OnTime

[App page](https://appshunter.io/ios/app/pro-ontime/id6499000843)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KuCalc free?

KuCalc is free to download, with no in-app purchases.

### Is Pro OnTime free?

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

### Do KuCalc or Pro OnTime have ads?

Neither KuCalc nor Pro OnTime shows ads.

### Which is updated more often, KuCalc or Pro OnTime?

KuCalc ships an update every 3 months, and Pro OnTime fortnightly. Most recently, KuCalc was updated on October 7, 2026 and Pro OnTime on October 4, 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.*