Comparison

Classkick 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

Classkick

This app allows students to complete assignments digitally and receive instant feedback from teachers and classmates. Educators can create paperless assignments, monitor student progress in real-time, and facilitate peer-to-peer learning. It aims to increase student feedback and reduce grading time.

Highlights
  • Create paperless assignments
  • Real-time student work monitoring
  • Instant teacher feedback
  • Anonymous peer-to-peer help
  • Work at own pace
  • Ask for help privately
Features
Read full description

Classkick is a free app that students work on and get help instantly from their teacher and peers. Students work on assignments with their Chromebooks, laptops, or iPads, while getting help from teachers and peers instantly. Teachers create assignments, see all their students’ work in real-time, and give LOTS of student feedback. Best of all, students can help each other anonymously. Using Classkick, feedback to students increases by 300% and grading time is cut in half. “Classkick is every teacher’s dream.” - Lynne Shalman, Chapin School “Students love Classkick...it was magic!” - Greg Port, Seton College TEACHERS... - CREATE paperless assignments using existing worksheets, audio, video or web content. - SEE every students’ work simultaneously. - GIVE instant feedback when it is most important. - FACILITATE peer-to-peer feedback and learning. STUDENTS... - WORK at their own pace and even on their own time. - ASK for help privately. - HELP their peers. USE IT... - in class or at home. - in traditional or flipped classrooms. - as a group together or on your own time individually. FOR… - assignments - quizzes - station work - do nows/exit slips - guided practice - independent practice - homework

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

PhET Simulations3 screens

Verdict

The call

The clearest difference is price: Classkick at Free against PhET Simulations's $0.99. Classkick also leads on update cadence (every 9 days vs every 14 months) and ratings volume (727 vs 49). PhET Simulations's advantage is rating (4.5 vs 3.1) and review sentiment (66% vs 33%). On ads, in-app purchases 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

Classkick is free to download; PhET Simulations costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PhET Simulations holds the better App Store score, 4.5 against 3.1. That said, the two scores are not equally well evidenced: Classkick has 727 ratings behind it against 49, so its average is the more settled of the two. Written reviews point the same way: 33% of Classkick's written reviews are positive against 66% of PhET Simulations's.

UpkeepUpdate frequency

Classkick ships an update every 9 days, PhET Simulations every 14 months. Both last shipped on October 11, 2026.

Scorecard8 real differences · 3 level
Classkick versus PhET Simulations: the parameters behind the verdict, then further details
ParameterClasskickPhET Simulations
PriceFree — better$0.99
Rating3.1 (727 ratings)4.5 (49 ratings) — better
Positive reviews33.1% of reviews65.5% of reviews — better
Number of ratings727 — better49
Update frequencyEvery 9 days — betterEvery 14 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#74 — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS1515.0
Further details — not scored
Size73 MB125 MB
Age rating4+4+
DeveloperClasswork CoUniversity of Colorado Boulder

Customer experience

Classkick

All ratings727 ratings
Positive49.5%
Neutral5.8%
Negative44.7%
Written reviews263 reviews
Positive33.1%
Neutral8.7%
Negative58.2%

PhET Simulations

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

Bugs and requests

Classkick

Reported bugs

3 issues
  • Assignments not loading properly
  • Inability to save or access work
  • Incompatibility with newer devices/OS

Requested features

4 requests
  • Add split-screen support
  • Improve text/writing controls
  • Better Apple Pencil integration
  • Enhance stability and performance

PhET Simulations

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Classkick

No in-app purchases

None

PhET Simulations

No in-app purchases

Questions

Is Classkick free?
Classkick is free to download, with no in-app purchases.
Is PhET Simulations free?
PhET Simulations costs $0.99, with no in-app purchases.
Which has better reviews, Classkick or PhET Simulations?
PhET Simulations is rated higher. Classkick averages 3.1 out of 5 from 727 ratings, while PhET Simulations averages 4.5 from 49 ratings.
Do Classkick or PhET Simulations have ads?
Neither Classkick nor PhET Simulations shows ads.
Which is updated more often, Classkick or PhET Simulations?
Classkick ships an update every 9 days, and PhET Simulations every 14 months. Most recently, Classkick was updated on October 11, 2026 and PhET Simulations on October 11, 2026.

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