# Problem solver vs My Physics Calculator lite

The clearest difference is in-app purchases: Problem solver at none against My Physics Calculator lite's 1. Problem solver also leads on iOS requirement (8.0 vs 16.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. My Physics Calculator lite sells 1 one-off in-app purchase. Problem solver asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on May 16, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | Problem solver | My Physics Calculator lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (8 ratings)](https://appshunter.io/ios/app/my-physics-calculator-lite/id1582168976/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 10 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fabio Giuliani](https://appshunter.io/developer/1333671865) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## What reviewers say

### Problem solver

[App page](https://appshunter.io/ios/app/problem-solver-mechanics/id1435700320)

**Features:** macOS Compatibility

**In-app purchases:** none


### My Physics Calculator lite

[App page](https://appshunter.io/ios/app/my-physics-calculator-lite/id1582168976)

This app offers a comprehensive collection of 134 physics and engineering calculators. It provides formulas and definitions for each calculation, with initial use free and additional features available via in-app purchase.

**Highlights:** 134 physics and engineering calculators, Formulas and definitions included, Mechanics & Motion calculations, Fluids & Thermodynamics tools, Electrical & Circuit calculations, Simple user interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 134 Physics Calculators | $3.99 | one-time |


## Frequently asked questions

### Is Problem solver free?

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

### Is My Physics Calculator lite free?

My Physics Calculator lite is free to download, with in-app purchases available.

### Do Problem solver or My Physics Calculator lite have ads?

Both Problem solver and My Physics Calculator lite show ads.

### Which is updated more often, Problem solver or My Physics Calculator lite?

Problem solver ships an update every 6 months, and My Physics Calculator lite every 6 months. Most recently, Problem solver was updated on May 16, 2026 and My Physics Calculator lite on August 15, 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.*