Comparison

Pi vs Cosmo

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

Head to head
About

Pi

Engage in quick math challenges and compete with friends to improve your skills. This app transforms math learning into an exciting game, making it fun and accessible for all ages. Swap mindless scrolling for brain-boosting battles and enjoy a positive learning environment.

Highlights
  • Time-pressured math quizzes
  • Leaderboard competition
  • Daily math challenges
  • Smarter screen time alternative
  • Positive reinforcement messages
  • Math skill improvement
Features
Read full description

At Pi-Squared, we have created a fun environment where people enjoy learning math. Replace doomscrolling, with minute math battles against your friends!  Pi-Squared is the ultimate gamified math app designed for those who love a quick daily challenge.  Perfect for anyone looking to improve at math or simply keep your brain and skills sharp, we seek to transform people's perspective on math! Moving from a subject that might have once been scary, stressful, or tough, to now an exciting game of speed, strategy, and problem-solving.  Pi-Squared is suitable for math enthusiasts of all ages! Key Components: Speed & Competition – Beat the clock with time-pressured quizzes, climb leaderboards, and maintain streaks. Smarter Screen Time – Swap mindless scrolling for quick, brain-boosting math battles. Free education! – Quality learning for everyone, no paywall in the way. We want you to succeed! Positive Reinforcement – Get hyped with encouraging messages and leaderboards. Look forward to opening the app and seeing our friendly shark everyday! Pi-Squared makes math thrilling... because studying should feel like a game, not a grind. Ready to play?

About

Cosmo

This app offers hands-on, practice-based lessons to build in-demand skills in areas like GenAI, business, and tech. It acts as a personal AI tutor, adapting to your learning pace and providing instant help on any topic. Earn shareable certificates and skill badges to advance your career.

Highlights
  • Personalized AI tutor
  • Hands-on, practice-based lessons
  • Learn GenAI, business, tech, and more
  • Earn skill badges and certificates
  • Instant help on any topic
  • 200+ career-building skills
Features
Read full description

Build real skills in just minutes a day. No videos. Just doing. Cosmo is your personal AI tutor, always ready with hands-on lessons that adapt to you. Whether you're between classes, commuting, or on a break, you’ll make real progress in GenAI, business, tech, and more. Built by CodeSignal, the AI platform trusted by over 3,000 top employers for hiring, including Google, Meta, Zoom, Netflix, TikTok, and Anthropic. Loved by over 1 million learners who build and prove their skills with CodeSignal. Why Cosmo • Cosmo, your AI tutor, adapts to you and guides you on your journey so you can learn faster • Fun, practice-based lessons that keep you engaged • Master the most in-demand skills to grow your career • Earn shareable certificates and skill badges • Take full courses or get instant help on any topic Every course is free. Learn GenAI, business, marketing, sales, finance, accounting, product management, project management, leadership, communication, emotional intelligence, Python, JavaScript, Go, Swift, Kotlin, Rust, web development, cloud, SQL, data science, analytics, machine learning, data engineering, personal finance, focus, decision making, critical thinking, public speaking, habit formation, and more. Explore 200+ career-building skills • GenAI: Practice prompts and apply ChatGPT at work • Finance: Understand money, markets, and valuation • Marketing: Learn digital ads, branding, SEO, and strategy • Coding: Learn Python, JavaScript, and more through practice • Data: Build skills in SQL, machine learning, and analytics • Leadership: Grow communication and strategic thinking • Personal Growth: Build habits, confidence, and clarity • Startups: Learn how to launch your idea into the world If you like Cosmo, try Cosmo+ to learn faster with unlimited energy. Learn on the web at: https://codesignal.com/learn Send feedback to: support@codesignal.com Privacy Policy: https://codesignal.com/privacy Terms of Use: https://codesignal.com/terms/

Screenshots

Pi4 screens
Cosmo4 screens

Verdict

The call

The clearest difference is in-app purchases: Pi at none against Cosmo's 4. Pi also leads on review sentiment (100% vs 84%) and device support (3 vs 1). Cosmo's advantage is ads (none vs shown) and ratings volume (860 vs 35). On price, rating and update cadence 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

Both are free to download. Cosmo sells 4 in-app purchases, starting at $12.99 per month. Pi asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Pi against 4.8 for Cosmo. That said, the two scores are not equally well evidenced: Cosmo has 860 ratings behind it against 35, so its average is the more settled of the two. Written reviews are what separate them: 100% of Pi's written reviews are positive against 84% of Cosmo's.

UpkeepUpdate frequency

Pi ships an update every 10 days, Cosmo fortnightly. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

Scorecard7 real differences · 3 level
Pi versus Cosmo: the parameters behind the verdict, then further details
ParameterPiCosmo
PriceFreeFree
Rating4.9 (35 ratings) — better4.8 (860 ratings)
Positive reviews100.0% of reviews — better84.1% of reviews
Number of ratings35860 — better
Update frequencyEvery 10 days — betterFortnightly
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better16.4
Further details — not scored
Size89 MB95 MB
Age rating4+4+
DeveloperDavid CarrCodeSignal

Customer experience

Pi

All ratings34 ratings
Positive97.1%
Neutral0.0%
Negative2.9%
Written reviews19 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Cosmo

All ratings857 ratings
Positive96.4%
Neutral1.1%
Negative2.6%
Written reviews113 reviews
Positive84.1%
Neutral0.9%
Negative15.0%

User reviews

Pi

From 35 App Store ratings

What we love

  • 🚀 Excellent math tool
  • 👍 Fun and engaging
  • 👍 Intuitive and easy to navigate
  • 👍 Great for learning and practice
  • 👍 Wakes up the brain

Cosmo

From 860 App Store ratings

What we love

  • 🌟 Amazing app
  • 🎮 Gamification that feels productive
  • 🚀 Learning made easy - on the go!
  • 😊 Cutest teacher award goes to Cosmo!!!
  • 👍 So much better than doom scrolling!

Bugs and requests

Pi

No bugs or feature requests surfaced in reviews.

Cosmo

Requested features

1 request
  • Ability to upgrade/customize Cosmo's outfit and spaceship

In-app purchases

None

Pi

No in-app purchases

4 purchases

Cosmo

Subscriptions4
  • Unlimited Access7 Days trial$12.991 Month
  • Unlimited Access7 Days trial$24.991 Month
  • Unlimited Access7 Days trial$78.001 Year
Show 1 more
  • Unlimited Access7 Days trial$149.991 Year

Questions

Is Pi free?
Pi is free to download, with no in-app purchases.
Is Cosmo free?
Cosmo is free to download, with in-app purchases available.
Which has better reviews, Pi or Cosmo?
Pi is rated higher. Pi averages 4.9 out of 5 from 35 ratings, while Cosmo averages 4.8 from 860 ratings.
Do Pi or Cosmo have ads?
Pi shows ads; Cosmo does not.
Which is updated more often, Pi or Cosmo?
Pi ships an update every 10 days, and Cosmo fortnightly. Most recently, Pi was updated on October 30, 2026 and Cosmo on November 8, 2026.

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