PlanetSpark vs Cosmo (formerly ClassUp)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PlanetSpark
This app offers live 1:1 online classes for public speaking and creative writing, designed to boost children's fluency, confidence, and overall personality. It provides a comprehensive curriculum taught by top educators, with personalized learning journeys and practice sessions to foster strong communication skills.
- 1:1 Live classes with top teachers
- Personalized learning journeys
- Free 1:1 learning session booking
- Live practice sessions
- Creative writing workshops
- Public speaking curriculum
- Progress reports
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Welcome to PlanetSpark - Live 1:1 Online Classes for Public Speaking and Creative Writing to improve fluency, and confidence and transform your child's overall personality. We offer the world's most extensive and complete program for Public Speaking and Creative Writing for kids. PlanetSpark's app is designed and conceptualized to help kids practice, learn and understand the concepts of personality development and to boost their confidence. The communication concepts and lessons are taught in an in-depth and easy-to-grasp manner. The app is designed to offer a complete learning experience to kids via PlanetSpark's cutting-edge curriculum taught by top educators. PlanetSpark is one of the world's most loved and fastest-growing EdTech platforms. The App covers Public Speaking and Creative Writing for classes K-10 learners. But that's not all - through the App, kids can learn and choose to join the live sessions on various different topics. Through the App, kids can also register, participate and learn from our best-in-class practice sessions clubbed with live events and exclusive workshops. PlanetSpark has a global community of students spanning 13+ countries with over 1 Million live one-to-one classes enrolled which helps the students to bond together and brings in a lot of diversity through our thoroughly designed app. The App also offers numerous communities like Debate Society, Poetry Academy, Podcasting Studio, Writers Guild, Comedy Club, Theatre Troupe, and a lot more. The classes are taught by some of India's top 1% of educators. The program offers the most cutting-edge curriculum taught by highly experienced public speaking experts. Every lesson is designed for the students to create the maximum impact. The lessons are personally customized according to the needs and skills of the child and by the end of the course, the App takes the student on a personalized learning journey, based on their unique learning style so that the kid can learn in their own comfort and pace. It also offers adaptive practice sessions, home assignments by the teachers and interactive 1:1 PTM (Parent's Teacher Meetings) along with the progress report of the kid, which helps the parents to keep a track of their kids' growth and performance throughout the course. Team PlanetSpark is on a mission to transform the kids into confident and fearless communicators and speakers regardless of their choice of profession in the future. Our in-house Academic and curriculum team of highly skilled educators have designed state-of-the-art and seamless content for the students to make sure that every student at PlanetSpark not only learns and grows from the sessions but also enjoys the process of learning. Features: - Learn 1:1 Live classes by India's top teachers and personalized learning journeys. - Instantly book free 1:1 learning sessions, with one click on the app. - You can try our live practice sessions program, and learn to perfection with intuitive lessons and exercises that ensure a detailed understanding of concepts. - Take daily challenges. The app comes with a daily challenge/task submission with rewards to make learning more fun. - Analyze and track your progress, strengths, and areas of improvement through our detailed progress reports. - Know your teacher. Visit the teacher's profile for more information and transparency. - Track your payment and monitor your attendance so that you never miss out on any class.
Cosmo (formerly ClassUp)
This app offers AI-powered, personalized learning experiences guided by real teachers. It provides live 1-on-1 classes, instant homework help, and adaptive learning plans to foster confident and motivated learners.
- Live 1-on-1 classes with AI and human teachers
- AI-powered personalized learning plans
- Instant homework help and chat support
- AI writing tool for assignments
- Unlimited practice for Math & ELA
- Progress tracking dashboard
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Becoming a confident thinker. A curious problem-solver. A joyful, motivated learner who’s ready for whatever the future holds. We’re a future-ready education system—powered by AI, guided by real teachers, and built for how children actually grow. 1. Live 1-on-1 Classes: Human Teachers + Smart AI In every session, real teachers and AI collaborate to create dynamic lessons that drive progress. Our virtual classrooms include interactive tools (whiteboards, quizzes!) to boost engagement. 2. Pick Your Favorite Teacher (or Let Us Choose!) Our experts match students with teachers based on learning style and goals—or you can directly select your preferred instructor from our verified educators. 3. Flex Scheduling: Learn Anytime, Anywhere Book classes 24/7 from your couch, library, or even soccer practice. Reschedule freely with xx-hour notice. 4. Cosmo: The AI Study Buddy Who Gets It 4.1 AI-Powered Personalized Learning Plans Customized weekly roadmaps adapting to your child’s pace and progress. 4.2 Instant Homework Help & Chat "Hey Cosmo, explain algebra!" Get step-by-step solutions, class bookings, or a pep talk with meme reactions. 4.3 AI Writing Tool Snap a photo of writing assignments for: Grammar fixes, Style suggestions, "Aha!" revision tips 4.4 Unlimited Practice for Math & ELA Enjoy endless questions and instant feedback—perfect for all skill levels. Learn anytime, anywhere! 4.5 Progress Tracking Dashboard Track mastered skills and growth areas with color-coded reports updated monthly.
Screenshots
Verdict
The clearest difference is rating: PlanetSpark at 5.0 against Cosmo (formerly ClassUp)'s 4.5. PlanetSpark also leads on in-app purchases (none vs 3) and iOS requirement (13.4 vs 15.0). Cosmo (formerly ClassUp)'s advantage is review sentiment (80% vs 54%) and ratings volume (879 vs 1). On price, 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
Both are free to download. Cosmo (formerly ClassUp) sells 3 one-off in-app purchases. PlanetSpark asks for nothing beyond the download.
PlanetSpark holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Cosmo (formerly ClassUp) has 879 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 54% of PlanetSpark's written reviews are positive against 80% of Cosmo (formerly ClassUp)'s, so the app with the better star average is not the one people write more warmly about.
PlanetSpark ships an update every 5 weeks, Cosmo (formerly ClassUp) every 9 days. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.
| Parameter | PlanetSpark | Cosmo (formerly ClassUp) |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.5 (879 ratings) |
| Positive reviews | 53.8% of reviews | 79.8% of reviews — better |
| Number of ratings | 1 | 879 — better |
| Update frequency | Every 5 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 62 MB | 408 MB |
| Age rating | 4+ | 4+ |
| Developer | Kunal Malik | Algorithm of Learning Inc. |
Customer experience
PlanetSpark
Cosmo (formerly ClassUp)
Bugs and requests
PlanetSpark
Not enough reviews yet to summarise bugs or requests.
Cosmo (formerly ClassUp)
Reported bugs
3 issues- Frequent class cancellations
- Billing and refund issues
- Unreliable internet connectivity during classes
Requested features
4 requests- More affordable pricing options
- Improved scheduling and class management
- Better communication with parents
- Enhanced technical stability and reliability
In-app purchases
PlanetSpark
No in-app purchases
Cosmo (formerly ClassUp)
- First Class$0.99
- Test 20 lessons package$0.99
- 3 one-on-one classes$74.99
Questions
Is PlanetSpark free?
Is Cosmo (formerly ClassUp) free?
Which has better reviews, PlanetSpark or Cosmo (formerly ClassUp)?
Do PlanetSpark or Cosmo (formerly ClassUp) have ads?
Which is updated more often, PlanetSpark or Cosmo (formerly ClassUp)?
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