Comparison

The Human Body by Tinybop vs PhET Simulations

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

Head to head
About

The Human Body by Tinybop

Explore the human body through interactive models of its systems. Discover how the heart beats, lungs breathe, and more. This app is designed for children and adults to foster foundational science literacy through engaging exploration.

Highlights
  • Explore 8 interactive body systems
  • Detailed interactive models of organs
  • Simulate body functions
  • Learn vocabulary in 50+ languages
  • Kid-friendly design with avatars
  • Expert-reviewed handbook included
Features
Read full description

Learn anatomy and biology in an interactive model of the human body — the heart beats, guts gurgle, lungs breathe, the skin feels, and eyes see. *** Children’s Technology Review Editor’s Choice *** *** KAPI Best App for Older Children *** *** Parents Magazine Best App for Families *** *** Winner - Digital Ehon Award 2020 *** *** 2022 American Library Association’s Notable Children’s Digital Media *** The Human Body is No. 1 in Tinybop’s Explorer’s Library. Each Explorer’s Library app lets kids explore the invisible and awesome wonders of STEM. Kids (and kids at heart!) ages 4+ develop foundational science literacy. The Human Body has been downloaded more than 9 million times and has reached the #1 spot on the App Store’s education charts in 144 countries. “The sound effects are both hilarious and compelling—the pulsing swoosh of the heart pumping is soothing, but the gassy squeaks coming from the digestive system are enough to send my kids into a fit of giggles.” — COOL MOM TECH “What it all amounts to is a circuitous, engrossing tour through the human body—one that’s completely self-guided and unique to every user.” — WIRED Features + Explore eight interactive systems to learn human anatomy, including the skeletal, muscular, nervous, circulatory, respiratory, digestive, immune, and integumentary (skin) systems. + Discover detailed, interactive models of the heart, brain, eye, stomach, mouth, and much more. + Get the urogenital system as an in-app purchase. + Feed the body, make it run and breathe, assemble and pull apart a skeleton, see how the eye sees, watch sound vibrations travel through the ear canal, and more. + Learn new vocabulary with text labels in 50+ languages. + Create a dashboard to change languages, delete accounts, and support your kids’ learning. + Intuitive, safe, and kid-friendly design. + Multi-user system: each child can choose and name their own avatar. + Original artwork and sound design. + Fun for the whole family—play together, learn together. + No rules or levels—curiosity is rewarded. 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. Psst! It's not Tiny Bop, Tiny Bob, or Tiny Pop. It's Tinybop. :)

About

PhET Simulations

Explore science and math concepts through interactive simulations. This app provides over 75 HTML5 simulations for learning about atoms, energy, multiplication, and more. It's ideal for students, parents, and educators, offering offline access and multiple language support.

Highlights
  • Interactive science and math simulations
  • Offline play capability
  • Multiple language support
  • Customizable favorites collection
  • Automatic simulation updates
  • Easy simulation sorting
Features
Currently charting
Read full description

Engage in learning science and math with the award-winning PhET simulations! Whether understanding atoms, exploring energy, or mastering multiplication, there is a sim for every learner. Perfect for at home, in class, or on the road, this app delivers all PhET HTML5 sims (over 75 sims) in one easy-to-use package. Developed by experts at the University of Colorado Boulder, PhET sims are used by millions of students every year. The PhET iPad app delivers these exclusive features: • Offline play: learn on the bus or at the park without a WiFi connection. • Multiple languages: app translate in many languages (great for bilingual learners). • Favorites: pick your favorite sims and create your own custom collection. • Automatic updates: get the latest HTML5 sims as soon as they are released. • Easy sorting: find the right sims for you. • Fullscreen: maximize your screen real estate for optimal sim exploration. PARENTS: Engage your child in science and math discovery. TEACHERS: Your favorite HTML5 sims at your fingertips, even without internet access. ADMINISTRATORS: Optimized for school use, so your teachers will be seamlessly up to date. STUDENTS: Tell your parents there’s an exciting app for learning science and math. Note: The app does not include PhET’s Java or Flash sims. In addition, although we are currently working on improving the accessibility of our sims, most of the sims included in this app do not include keyboard navigation or screen reader access. As accessible sims become available, they will be updated within the app. Proceeds from the app support the development of more HTML5 sims. On behalf of the PhET team and the students whose lives you have helped improve — Thank you!

Screenshots

The Human Body by Tinybop4 screens
PhET Simulations3 screens

Verdict

The call

The clearest difference is in-app purchases: PhET Simulations at none against The Human Body by Tinybop's 1. PhET Simulations also leads on rating (4.5 vs 4.2) and price ($0.99 vs $3.99). The Human Body by Tinybop's advantage is update cadence (every 5 months vs every 14 months) and ratings volume (403 vs 48). On review sentiment, ads, device support and iOS requirement 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

The Human Body by Tinybop costs $3.99 and PhET Simulations $0.99 up front. The Human Body by Tinybop sells 1 one-off in-app purchase. PhET Simulations asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PhET Simulations holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: The Human Body by Tinybop has 403 ratings behind it against 48, so its average is the more settled of the two. Written reviews complicate that: 67% of The Human Body by Tinybop's written reviews are positive against 66% of PhET Simulations's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

The Human Body by Tinybop ships an update every 5 months, PhET Simulations every 14 months. Both last shipped on November 11, 2026.

Scorecard7 real differences · 4 level
The Human Body by Tinybop versus PhET Simulations: the parameters behind the verdict, then further details
ParameterThe Human Body by TinybopPhET Simulations
Price$3.99$0.99 — better
Rating4.2 (403 ratings)4.5 (48 ratings) — better
Positive reviews67.0% of reviews — better65.5% of reviews
Number of ratings403 — better48
Update frequencyEvery 5 months — betterEvery 14 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank—#28 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size125 MB125 MB
Age rating4+4+
DeveloperTinybop Inc.University of Colorado Boulder

Customer experience

The Human Body by Tinybop

All ratings398 ratings
Positive79.6%
Neutral5.5%
Negative14.8%
Written reviews1,052 reviews
Positive67.0%
Neutral8.4%
Negative24.6%

PhET Simulations

All ratings49 ratings
Positive87.8%
Neutral0.0%
Negative12.2%
Written reviews145 reviews
Positive65.5%
Neutral4.1%
Negative30.3%

Bugs and requests

The Human Body by Tinybop

Reported bugs

3 issues
  • Inability to restore in-app purchases
  • Compatibility issues with newer iOS versions
  • Freezing and crashing on certain actions

Requested features

4 requests
  • Add more body systems (e.g. endocrine, lymphatic)
  • Include pronunciations of body part names
  • Provide more detailed explanations of processes
  • Allow customization of the human model

PhET Simulations

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

The Human Body by Tinybop

One-time1
  • The Urogenital System$0.99
None

PhET Simulations

No in-app purchases

Questions

Is The Human Body by Tinybop free?
The Human Body by Tinybop costs $3.99, and also offers in-app purchases.
Is PhET Simulations free?
PhET Simulations costs $0.99, with no in-app purchases.
Which has better reviews, The Human Body by Tinybop or PhET Simulations?
PhET Simulations is rated higher. The Human Body by Tinybop averages 4.2 out of 5 from 403 ratings, while PhET Simulations averages 4.5 from 48 ratings.
Do The Human Body by Tinybop or PhET Simulations have ads?
Neither The Human Body by Tinybop nor PhET Simulations shows ads.
Which is updated more often, The Human Body by Tinybop or PhET Simulations?
The Human Body by Tinybop ships an update every 5 months, and PhET Simulations every 14 months. Most recently, The Human Body by Tinybop was updated on November 11, 2026 and PhET Simulations on November 11, 2026.

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