# Kalkulilo (Calculator) vs iPhysics

The clearest difference is price: iPhysics at Free against Kalkulilo (Calculator)'s $2.99. iPhysics also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). Kalkulilo (Calculator)'s advantage is ratings volume (29 vs 1). On update cadence, ads and device support there is nothing between them.

iPhysics is free to download; Kalkulilo (Calculator) costs $2.99 up front. Kalkulilo (Calculator) sells 1 one-off in-app purchase. iPhysics asks for nothing beyond the download.

iPhysics holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Kalkulilo (Calculator) has 29 ratings behind it against 1, so its average is the more settled of the two.

Kalkulilo (Calculator) ships an update every 2 months, iPhysics monthly. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Kalkulilo (Calculator) | iPhysics |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.5 (29 ratings)](https://appshunter.io/ios/app/kalkulilo-calculator/id286091993/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/iphysics/id1560181130/reviews)** |
| Number of ratings | **29** | 1 |
| Positive reviews | 75.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 3 MB | 10 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Clauss](https://appshunter.io/developer/286091996) | [machineering GmbH & Co. KG](https://appshunter.io/developer/1539918946) |

## What reviewers say

### Kalkulilo (Calculator)

[App page](https://appshunter.io/ios/app/kalkulilo-calculator/id286091993)

This app offers a versatile calculator with multiple modes, including scientific, bitwise, statistical, trigonometric, base conversion, and time calculations. It features a simple mode with large buttons and customizable interface. Widgets for notification center and Apple Watch are also included.

**Highlights:** Scientific calculator functions, Bit/integer mode with logical operations, Statistical calculations, Base/radix conversion (2-36), Time value calculations, Customizable interface, Apple Watch app and widget

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |

**What reviewers like**

- 🚀 Excellent, powerful calculator
- 👍 Variety of modes and number systems
- 👍 Intuitive and easy to use
- 👍 Highly functional for engineers, programmers, and students
- 👍 Replaces physical scientific calculators

**What reviewers complain about**

- 🐛 Stopped working after OS update
- 💰 Ads introduced after being paid app
- 👎 Buttons too small, hard to press
- 🔍 Confusing color scheme and UI

**Reported bugs**

- Number doesn't transfer correctly when switching between modes
- Negative exponents not displayed correctly in engineering notation
- Loses calculation history when changing modes

**Requested features**

- Add calculus, linear algebra, and probability functions
- Implement a 'repeated equals' function
- Add a backspace/delete button
- Allow customizing color scheme
- Improve Apple Watch integration


### iPhysics

[App page](https://appshunter.io/ios/app/iphysics/id1560181130)

Visualize complex machines and robots in 3D. This application provides real-time viewing of physics-based simulations created with the iPhysics software.

**Highlights:** 3D model visualization, Real-time simulation viewing, Physics-based simulations, Machine and robot simulation, iPhysics software integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kalkulilo (Calculator) free?

Kalkulilo (Calculator) costs $2.99, and also offers in-app purchases.

### Is iPhysics free?

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

### Which has better reviews, Kalkulilo (Calculator) or iPhysics?

iPhysics is rated higher. Kalkulilo (Calculator) averages 4.5 out of 5 from 29 ratings, while iPhysics averages 5.0 from 1 ratings.

### Do Kalkulilo (Calculator) or iPhysics have ads?

Neither Kalkulilo (Calculator) nor iPhysics shows ads.

### Which is updated more often, Kalkulilo (Calculator) or iPhysics?

Kalkulilo (Calculator) ships an update every 2 months, and iPhysics monthly. Most recently, Kalkulilo (Calculator) was updated on October 20, 2026 and iPhysics on October 16, 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.*