# Simple Machines by Tinybop vs Proportia

The clearest difference is review sentiment: Proportia at 100% against Simple Machines by Tinybop's 37%. Proportia also leads on rating (5.0 vs 3.7) and update cadence (daily vs every 4 months). Simple Machines by Tinybop's advantage is ratings volume (62 vs 5). On ads, in-app purchases, monetization model and device support there is nothing between them.

Simple Machines by Tinybop costs $2.99 and Proportia $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Proportia holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Simple Machines by Tinybop has 62 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 37% of Simple Machines by Tinybop's written reviews are positive against 100% of Proportia's.

Simple Machines by Tinybop ships an update every 4 months, Proportia daily. The most recent releases landed on November 1, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Simple Machines by Tinybop | Proportia |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | [3.7 (62 ratings)](https://appshunter.io/ios/app/simple-machines-by-tinybop/id936966570/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/proportia/id6744179896/reviews)** |
| Number of ratings | **62** | 5 |
| Positive reviews | 37.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Paid | Paid |
| Size | 112 MB | 23 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tinybop Inc.](https://appshunter.io/developer/682046582) | [Cognichine](https://appshunter.io/developer/1806408356) |

## What reviewers say

### Simple Machines by Tinybop

[App page](https://appshunter.io/ios/app/simple-machines-by-tinybop/id936966570)

Explore the playful side of physics and learn about simple machines through interactive experiments. Kids can discover how levers, pulleys, and other mechanisms work by building and testing them in a digital sandbox environment. This app is designed to spark curiosity and understanding of scientific principles.

**Highlights:** Explore 6 simple machines, Experiment with real-world physics, Investigate physics at work, Learn about force and motion, Kid-friendly design, Interactive labels in 40+ languages

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🎨 Beautiful graphics and design
- 🧠 Educational and informative
- 👨‍👩‍👧‍👦 Good for kids and learning
- 💡 Sparks curiosity and imagination
- 👍 Intuitive and easy to use

**What reviewers complain about**

- 😴 Boring and repetitive
- 💸 Expensive for limited content
- 🤷‍♂️ Lacks clear goals or objectives
- 🤏 Limited interaction and content
- 🚫 Not a game, more of a toy

**Reported bugs**

- Crashes immediately on launch
- Cannot install after purchase
- App crashes after loading screen
- No sound
- Does not work

**Requested features**

- Add a creative building mode
- More levels and modules
- Sandbox mode
- Ability to build own machines
- More interactive elements


### Proportia

[App page](https://appshunter.io/ios/app/proportia/id6744179896)

This app transforms numerical data into clear, proportional visual representations like circles, rectangles, or bars. It simplifies understanding ratios, comparing values, and building numeracy skills for students, educators, and professionals.

**Highlights:** Dynamic shape visualization (circles, bars, rectangles), Proportional resizing based on values, Interactive value entry with calculator, Customizable shape colors and settings, Real-time visual feedback, Clean, dark theme design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple Machines by Tinybop free?

Simple Machines by Tinybop costs $2.99, with no in-app purchases.

### Is Proportia free?

Proportia costs $0.99, with no in-app purchases.

### Which has better reviews, Simple Machines by Tinybop or Proportia?

Proportia is rated higher. Simple Machines by Tinybop averages 3.7 out of 5 from 62 ratings, while Proportia averages 5.0 from 5 ratings.

### Do Simple Machines by Tinybop or Proportia have ads?

Neither Simple Machines by Tinybop nor Proportia shows ads.

### Which is updated more often, Simple Machines by Tinybop or Proportia?

Simple Machines by Tinybop ships an update every 4 months, and Proportia daily. Most recently, Simple Machines by Tinybop was updated on November 1, 2026 and Proportia on October 12, 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.*