Comparison

Simple Machines by Tinybop vs Periodic Play

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

Head to head
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.

About

Periodic Play

Features
Read full description

Discover the fun side of chemistry with Periodic Play — the card game that turns the periodic table into hands-on play. Match real elements, form real compounds, and watch chemistry come alive with every capture. EVERY CAPTURE IS A DISCOVERY Complete a compound and watch its elements collide and fuse in a delightful animation — 2 hydrogens and 1 oxygen really do crash together to make H2O! Atom balls use the same standard colors chemists use, every molecular ratio is scientifically accurate, and each of the 23 compounds comes with a fun real-life fact: rust is what makes Mars red, cows burp methane, and your brain is burning glucose right now. THREE WAYS TO PLAY Explore — No timer, no opponent. Take your time, form compounds, and soak up the science at your own pace. Perfect for first-time chemists. 1 Player vs Bot — Race a friendly Bot with three difficulty levels. Capture compounds before the countdown runs out! 2 Players — Face-to-face on one device, each player on their own side of the screen. Same table, same cards — fastest thinker wins. 74 CARDS, REAL CHEMISTRY 51 element cards — Hydrogen, Oxygen, Carbon, Sodium, Iron and more 23 compound cards — Water, Table Salt, Carbon Dioxide, Glucose, Sulfuric Acid and more Spot a table where nothing can be made? Call a deadlock for bonus points — but a wrong call will cost you! LEARN WHILE YOU PLAY A built-in interactive tutorial teaches everything in six bite-size lessons — how to read formulas, why H2 needs two hydrogen cards, when to call a deadlock, and more. No walls of text — just watch and play. Perfect for: Primary and lower-secondary students meeting the elements for the first time Families who love science night Classrooms, science clubs and homeschoolers Explore and 2 Players modes are completely free, forever. A single optional purchase unlocks 1 Player vs Bot. No ads. No accounts. Everything works offline — internet is only needed for the optional purchase.

Screenshots

Simple Machines by Tinybop4 screens
Periodic Play4 screens

Verdict

The call

The clearest difference is price: Periodic Play at Free against Simple Machines by Tinybop's $2.99. Periodic Play also leads on update cadence (every 2 weeks vs every 4 months). Simple Machines by Tinybop's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.0). On ads and device support 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

Periodic Play is free to download; Simple Machines by Tinybop costs $2.99 up front. Periodic Play sells 1 one-off in-app purchase. Simple Machines by Tinybop asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Machines by Tinybop ships an update every 4 months, Periodic Play every 2 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Simple Machines by Tinybop versus Periodic Play: the parameters behind the verdict, then further details
ParameterSimple Machines by TinybopPeriodic Play
Price$2.99Free — better
Rating3.7 (62 ratings) — better—
Positive reviews37.4% of reviews—
Number of ratings62 — better—
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size112 MB5 MB
Age rating4+4+
DeveloperTinybop Inc.S and S Forever Pty Ltd

Bugs and requests

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

Periodic Play

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Simple Machines by Tinybop

No in-app purchases

1 purchases

Periodic Play

One-time1
  • 1 Player vs Bot$1.99

Questions

Is Simple Machines by Tinybop free?
Simple Machines by Tinybop costs $2.99, with no in-app purchases.
Is Periodic Play free?
Periodic Play is free to download, with in-app purchases available.
Do Simple Machines by Tinybop or Periodic Play have ads?
Neither Simple Machines by Tinybop nor Periodic Play shows ads.
Which is updated more often, Simple Machines by Tinybop or Periodic Play?
Simple Machines by Tinybop ships an update every 4 months, and Periodic Play every 2 weeks. Most recently, Simple Machines by Tinybop was updated on November 6, 2026 and Periodic Play on October 31, 2026.

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