Comparison

Monster Physics® vs Simple Machines by Tinybop

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Monster Physics®

Build and operate your own creations like cars, rockets, and planes using a realistic physics engine. Solve missions, learn physics concepts, and unleash your imagination with over 68 parts and various materials.

Highlights
  • Design and operate inventions
  • Build with 68+ parts
  • Solve 50 missions
  • Learn physics concepts
  • Create custom avatars
  • Multiple player profiles
Features
Currently charting
Read full description

▸ 2012 Editor's Choice Award! - Children's Technology Review ▸ "a fun, educational app that hits the mark with kids" - The iPhone Mom Monster Physics® is a unique building app that lets you play with physics! Build and operate your own car, crane, rocket ship, plane, helicopter, tank and more! BUILD IT: Set your imagination free! Build intricate, working contraptions with over 68 different parts including wheels, rockets, propellers, cannons, magnets, claws, wings and more. Choose from different materials including metal, wood, plastic, rubber and ice. Connect parts together by welding them, drawing a rope or chain between them with your finger or using special dynamic joints to bring them to life. Once your invention is complete, Monster Physics® will render it with it's built-in physics engine and let you actually operate your creation in real time. You can drive your car, operate your crane, guide your rocket into space or fly your helicopter! The possibilities are limited only by your imagination. SOLVE IT: Think outside the box! Monster Physics® comes with 50 missions for you to solve including simple tutorials as well as mind-bending challenges. Many of the missions are open-ended and can be solved with a wide variety of different solutions so you can play them over and over again. Players will learn problem-solving and creative-thinking skills while having tons of fun. LEARN IT: Have fun while learning! Players learn physics "hands on" through solving missions and building and refining their own inventions. In addition, a separate learn section introduces players to basic physics concepts such as friction, force, mass, acceleration and more. FEATURES: ▸ Create your own monster avatar ▸ Design and operate your own inventions ▸ Solve 50 fun missions ▸ Build with 68 different parts ▸ Learn common physics terms ▸ Create up to six player profiles ▸ Enjoy fun sound effects and music ▸ Powered by a realistic physics engine ▸ Retina support ▸ Works on both iPhone and iPad - a universal app Suggested age range: 10 to 110 PRIVACY DISCLOSURE Monster Physics®: - Does not contain 3rd-party ads. - Does not contain in-app purchases. - Does not contain integration with social networks. - Does not use 3rd-party analytics / data collection tools. - Does include links to apps by Dan Russell-Pinson in the iTunes App Store. For more information on our privacy policy please visit: http://dan-russell-pinson.com/privacy/

About

Simple Machines by Tinybop

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
Read full description

Explore the playful side of physics! “I just love how apps like these get kids genuinely excited about science." — COOL MOM TECH Experiment with levers, pulleys, inclined planes, inclined planes, wedges, wheel and axles, and screws. Discover how they work and investigate the invisible forces behind them in this sandbox app. Destroy a castle, make music, send satellites into orbit & more! *** App Store Editor's Choice *** *** Parents’ Choice Gold Award winner *** Simple Machines integrates with STEM curriculum: kids can alter and test each machine to learn about force and motion, actions and reactions, inputs and outputs, conservation of energy, mechanical advantages, and tradeoffs. Get free activity sheets at tinybop.com. Simple Machines is No. 4 in Tinybop’s Explorer’s Library series, designed for curious kids ages 4+ to dive deep into big ideas. The apps in this series have won Best of the App Store, App Store Editors’ Choice, Parents’ Choice, and Children's Technology Review Editor’s Choice awards. Features: * Explore 6 simple machines: levers, pulleys, inclined planes, wedges, wheel and axles, and screws. * Experiment with real world physics, actions and reactions, inputs and outputs. Learn about force and motion. * Investigate the physics at work behind each machine. * Sophisticated sound design rewards experimentation. * Original artwork by James Gilleard. * Smart features use your device’s camera to bring your kids’ world into the app. * Learn new vocabulary in 40+ languages with interactive labels. * Intuitive, safe, and kid-friendly design. * Entertaining for kids and adults alike. FREE handbook Our expert-reviewed handbook is full of facts, interaction hints, and discussion questions to support learning in this app, in the classroom or at home. Download in your app or at: http://tinybop.com/handbooks. Privacy Policy We take your and your child’s privacy very seriously. We do not collect or share personal information about your child, nor do we allow any third-party advertising. When the camera, microphone, and other services are used within an app, your information is neither collected nor distributed outside of the app. Read our complete privacy policy at tinybop.com. Tinybop, Inc. is a Brooklyn-based studio of designers, engineers, and artists. We make toys for tomorrow. We’re all over the internet. Visit us: www.tinybop.com Follow us: twitter.com/tinybop Like us: facebook.com/tinybop Peek behind the scenes: instagram.com/tinybop We love hearing your stories! If you have ideas, or something isn’t working as you expect it to, please contact us: hi@tinybop.com. Compatible with iPhone 5, 5s, 5c, 6, 6 Plus, iPod touch (5th generation), iPad 2, 3, mini, and Air. **This app is optimized for iPad 2 and iPhone 5 or higher. Requires iOS 7.0 or later. psst! It's not Tiny Bop, or Tiny Bob, or Tiny Pop. It's Tinybop.

Screenshots

Monster Physics®4 screens
Simple Machines by Tinybop4 screens

Verdict

The call

The clearest difference is review sentiment: Monster Physics® at 84% against Simple Machines by Tinybop's 37%. Monster Physics® also leads on rating (4.3 vs 3.7) and chart position (#169 vs unranked). Simple Machines by Tinybop's advantage is update cadence (every 4 months vs every 9 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Monster Physics® costs $1.99 and Simple Machines by Tinybop $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Monster Physics® holds the better App Store score, 4.3 against 3.7. Both are backed by a comparable volume of ratings — 88 and 62 respectively. Written reviews point the same way: 84% of Monster Physics®'s written reviews are positive against 37% of Simple Machines by Tinybop's.

UpkeepUpdate frequency

Monster Physics® ships an update every 9 months, Simple Machines by Tinybop every 4 months. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.

Scorecard6 real differences · 5 level
Monster Physics® versus Simple Machines by Tinybop: the parameters behind the verdict, then further details
ParameterMonster Physics®Simple Machines by Tinybop
Price$1.99 — better$2.99
Rating4.3 (88 ratings) — better3.7 (62 ratings)
Positive reviews84.0% of reviews — better37.4% of reviews
Number of ratings88 — better62
Update frequencyEvery 9 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#169 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better12.0
Further details — not scored
Size52 MB112 MB
Age rating4+4+
DeveloperFreecloud Design, Inc.Tinybop Inc.

Customer experience

Monster Physics®

All ratings88 ratings
Positive81.8%
Neutral5.7%
Negative12.5%
Written reviews125 reviews
Positive84.0%
Neutral4.8%
Negative11.2%

Simple Machines by Tinybop

All ratings62 ratings
Positive62.9%
Neutral14.5%
Negative22.6%
Written reviews131 reviews
Positive37.4%
Neutral8.4%
Negative54.2%

User reviews

Monster Physics®

From 88 App Store ratings

What we love

  • 🎮 Highly engaging and addictive gameplay
  • 🧠 Excellent educational value teaching physics concepts
  • 🎨 Encourages creativity and imagination
  • 👨‍👩‍👧‍👦 Appeals to wide age range from kids to adults
  • ⚙️ Realistic and intuitive physics simulation

Room to improve

  • 🚫 50-part build limit is too restrictive
  • 📐 Limited play area/workspace size
  • 🐛 Various bugs and glitches affecting gameplay
  • 🎮 Steep learning curve for beginners
  • ⚠️ Insufficient tutorial and guidance

Simple Machines by Tinybop

From 62 App Store ratings

What we love

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

Room to improve

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

Bugs and requests

Monster Physics®

Reported bugs

11 issues
  • Cannot place multiple blocks in Obstacle Course mission
  • Right half of screen buttons unresponsive on larger devices
  • Cannot save profiles or progress
  • Game freezes on build monster screen
  • Screen goes mostly black and becomes unresponsive
Show 6 more
  • Color tool only applies to top part of objects
  • Space audio continues playing after closing project
  • Parts don't attach properly despite tutorial implications
  • Welding physics behave unexpectedly
  • Build limit prevents saving when exceeded
  • Incompatibility with newer iOS versions and device sizes

Requested features

20 requests
  • Increase part limit from 50 to 100+ or unlimited
  • Expand play area and workspace
  • Add pistons for pushing/pulling mechanics
  • 3D version of the game
  • Landing legs for rockets
Show 15 more
  • Springs and steel cables
  • Copy/duplicate feature for parts
  • Rotate objects 90 degrees
  • Reset button for missions
  • Multiplayer/competitive modes
  • Share inventions with friends
  • More levels and challenges
  • Undo button for accidental moves
  • Ability to pair motors and pivots for multi-wheel drive
  • Better stabilizers
  • Voice overs for instructions
  • Music toggle while building
  • Level builder/content creation tools
  • Larger horizontal wrap-around workspace
  • Suction cup mechanics with adjustable release

Simple Machines by Tinybop

Reported bugs

8 issues
  • Crashes immediately on launch
  • Cannot install after purchase
  • App crashes after loading screen
  • No sound
  • Does not work
Show 3 more
  • Download issues
  • Does not open
  • Chinese language not displayed

Requested features

8 requests
  • Add a creative building mode
  • More levels and modules
  • Sandbox mode
  • Ability to build own machines
  • More interactive elements
Show 3 more
  • Add more complex mechanisms
  • Improve wheel and axle interaction
  • Allow bringing up planets in pulley game

In-app purchases

None

Monster Physics®

No in-app purchases

None

Simple Machines by Tinybop

No in-app purchases

Questions

Is Monster Physics® free?
Monster Physics® costs $1.99, with no in-app purchases.
Is Simple Machines by Tinybop free?
Simple Machines by Tinybop costs $2.99, with no in-app purchases.
Which has better reviews, Monster Physics® or Simple Machines by Tinybop?
Monster Physics® is rated higher. Monster Physics® averages 4.3 out of 5 from 88 ratings, while Simple Machines by Tinybop averages 3.7 from 62 ratings.
Do Monster Physics® or Simple Machines by Tinybop have ads?
Neither Monster Physics® nor Simple Machines by Tinybop shows ads.
Which is updated more often, Monster Physics® or Simple Machines by Tinybop?
Monster Physics® ships an update every 9 months, and Simple Machines by Tinybop every 4 months. Most recently, Monster Physics® was updated on October 16, 2026 and Simple Machines by Tinybop on October 19, 2026.

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