HudsonAlpha iCell vs PhET Simulations
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HudsonAlpha iCell
Explore the inner workings of animal, plant, and bacteria cells in a 3D interactive environment. Tap on cellular components to learn their names and functions. Rotate and zoom to get a comprehensive understanding of cellular biology.
- 3D interactive cell models
- Animal, plant, and bacteria cell examples
- Tap to select and learn organelle functions
- Rotate and zoom functionality
- Adjustable text size and description levels
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***Updated 3.6.1*** iCell now works even better on the iPhone. We have added larger text for all descriptions and included the ability to change text description levels for the iPhone as well as the iPad. iCell gives students, teachers, and anyone interested in biology a 3D view inside a cell. Included are examples of three types of cells: animal, plant, and bacteria. Learn about the various parts of the cell, which biologists, biochemists, and DNA researchers at the HudsonAlpha Institute study and use to advance the limits of biotechnology. You can use your finger to tap on parts of the cell to select and zoom in on that particular organelle. Each organelle comes with a name and a short description of its function in the cell. For a better view of each cell, hold down one finger on the screen, and drag to rotate around the cell or selected organelle. You can zoom in and out by pinching or flaring with two fingers at once. We hope you enjoy!
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.
- Interactive science and math simulations
- Offline play capability
- Multiple language support
- Customizable favorites collection
- Automatic simulation updates
- Easy simulation sorting
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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
Verdict
The clearest difference is price: HudsonAlpha iCell at Free against PhET Simulations's $0.99. HudsonAlpha iCell also leads on update cadence (every 4 weeks vs every 14 months) and ratings volume (294 vs 48). PhET Simulations's advantage is rating (4.5 vs 3.0) and chart position (#20 vs unranked). On review sentiment, ads, in-app purchases 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
HudsonAlpha iCell is free to download; PhET Simulations costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
PhET Simulations holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: HudsonAlpha iCell has 294 ratings behind it against 48, so its average is the more settled of the two. Written reviews complicate that: 70% of HudsonAlpha iCell'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.
HudsonAlpha iCell ships an update every 4 weeks, PhET Simulations every 14 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.
| Parameter | HudsonAlpha iCell | PhET Simulations |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.0 (294 ratings) | 4.5 (48 ratings) — better |
| Positive reviews | 69.8% of reviews — better | 65.5% of reviews |
| Number of ratings | 294 — better | 48 |
| Update frequency | Every 4 weeks — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #20 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 83 MB | 125 MB |
| Age rating | 4+ | 4+ |
| Developer | HudsonAlpha Institute for Biotechnology | University of Colorado Boulder |
Customer experience
HudsonAlpha iCell
PhET Simulations
Bugs and requests
HudsonAlpha iCell
Reported bugs
3 issues- Frequent crashes and app instability
- Compatibility issues with newer iOS versions
- Missing or incorrectly labeled organelles
Requested features
4 requests- Add more cell types (e.g. fungi, virus)
- Provide quizzing and assessment features
- Improve level of detail and explanations
- Allow users to explore cell structures in more depth
PhET Simulations
Not enough reviews yet to summarise bugs or requests.
In-app purchases
HudsonAlpha iCell
No in-app purchases
PhET Simulations
No in-app purchases
Questions
Is HudsonAlpha iCell free?
Is PhET Simulations free?
Which has better reviews, HudsonAlpha iCell or PhET Simulations?
Do HudsonAlpha iCell or PhET Simulations have ads?
Which is updated more often, HudsonAlpha iCell or PhET Simulations?
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