Comparison

Acellus vs Outschool

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

Head to head
About

Acellus

This online learning system offers a dynamic and interactive educational experience for K-12 students. It uses short video lessons and practice problems to assess understanding, with personalized instruction and real-time progress monitoring available.

Highlights
  • Self-paced learning
  • Personalized instruction
  • Live progress monitoring
  • Automatic record-keeping
  • Data-driven instruction
  • Comprehensive K-12 curriculum
Features
Read full description

Every student learns differently. Acellus meets them where they are — with personalized, video-based K-12 instruction used by over one million students across every U.S. state. Short video lessons introduce each concept, followed by practice problems that adapt to how your student is progressing. The result: a dynamic learning experience built around the individual, not the classroom average. Learn at Their Own Pace Students work independently through concepts, with personalized instruction that helps them truly master each one before moving on. Stay in the Loop Monitor your student's progress in real time from any device. Scores, hours worked, and course progress are automatically compiled into printable reports. Always Improving Student responses are continuously analyzed and used to refine course content — so courses get more effective over time, updated daily. A Complete K-12 Curriculum Acellus covers all core subjects K-12, plus Advanced Placement (AP), Exceptional Education, Career & Technical Education, and Exam Preparation — over 470 courses in total. Learning That Goes Anywhere At school, at home, or on the go — Acellus picks up exactly where your student left off, on any device with an internet connection. Give your student the personalized education they deserve. Download Acellus today.

About

Outschool

Discover and enroll your child in a vast selection of live online classes taught by global educators. This app provides a convenient way for kids and teens to learn on the go, offering features like class reminders and direct communication with teachers.

Highlights
  • Over 140K live online classes
  • Taught by global teachers
  • Reminder notifications for classes
  • Direct communication with teachers
  • Zoom integration for learners
  • Classes for ages 3-18
Features
Read full description

Outschool empowers your child by offering over 140K classes taught by teachers around the world. Kids are free to choose what, how, and where they want to learn. Now it’s even easier to learn on the go with the Outschool App. * Never miss a class with reminder notifications * Communicate with teachers before and after class * Help your learners access Zoom on their own * Designed for kids and teens, giving you peace of mind For everything else, visit the website to get full access to your account, and stay tuned for more features in the app coming soon! About Outschool Outschool is an online learning platform that empowers kids ages 3–18 to learn on their own terms with the widest variety of teachers, topics and classes to suit any interest. We offer interactive, small-group classes that are fun and social, video classes that can be taken any time, and groups that connect learners around their favorite topics. With Outschool, learners are free to pursue their interests, connect with others around shared passions, and build confidence through progress. Since 2015, we’ve partnered with vetted, diverse, expert teachers to give kids everywhere greater access to high-quality education. Questions? Have other features you'd love to see? Let us know at appsupport@outschool.com or visit www.support.outschool.com See our privacy policy at: https://outschool.com/privacy See our terms of service: https://outschool.com/terms

Screenshots

Acellus4 screens
Outschool4 screens

Verdict

The call

The clearest difference is rating: Acellus at 4.5 against Outschool's 3.2. Acellus also leads on in-app purchases (none vs 1) and ratings volume (32K vs 121). Outschool's advantage is update cadence (every 3 weeks vs every 3 months). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Outschool sells 1 one-off in-app purchase. Acellus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Acellus holds the better App Store score, 4.5 against 3.2. That said, the two scores are not equally well evidenced: Acellus has 32K ratings behind it against 121, so its average is the more settled of the two. Written reviews point the same way: 36% of Acellus's written reviews are positive against 29% of Outschool's.

UpkeepUpdate frequency

Acellus ships an update every 3 months, Outschool every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Acellus versus Outschool: the parameters behind the verdict, then further details
ParameterAcellusOutschool
PriceFreeFree
Rating4.5 (32K ratings) — better3.2 (121 ratings)
Positive reviews35.9% of reviews — better28.6% of reviews
Number of ratings32K — better121
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size8 MB53 MB
Age rating4+4+
DeveloperGoldKey Security CorporationOutschool

Customer experience

Acellus

All ratings32,015 ratings
Positive86.9%
Neutral3.4%
Negative9.8%
Written reviews524 reviews
Positive35.9%
Neutral15.3%
Negative48.9%

Outschool

All ratings117 ratings
Positive52.1%
Neutral4.3%
Negative43.6%
Written reviews84 reviews
Positive28.6%
Neutral10.7%
Negative60.7%

User reviews

Acellus

From 32K App Store ratings

What we love

  • 👍 Easy to navigate classes
  • 👍 Engaging and interactive lessons
  • 👍 Flexible and self-paced learning
  • 👍 Helpful and fun teachers
  • 👍 Ability to track progress and compete with friends

Room to improve

  • 🐛 Occasional crashes and freezes
  • 🐛 Incorrect answers marked as wrong
  • 🐛 Lessons not always aligned with assessments
  • 🐛 Boring or gimmicky teaching styles in some courses
  • 🐛 Lack of live teacher interaction and support

Outschool

From 121 App Store ratings

What we love

  • 👨‍🏫 Quality teachers and educational content
  • 🎓 Diverse class offerings and subjects
  • 📱 Convenient access to classes on mobile devices
  • 🔔 Helpful notification system for class reminders
  • 👥 Safe, vetted online learning environment

Room to improve

  • 💰 Expensive membership model and pricing structure
  • 💳 Predatory credit/coin system with markups
  • 🚫 Forced membership requirement (removed drop-in flexibility)
  • 🐛 App frequently crashes and fails to load
  • 🔍 Poor search and filtering functionality

Bugs and requests

Acellus

Reported bugs

4 issues
  • Videos randomly restarting or freezing
  • Incorrect grading of written assignments
  • Inability to review past lessons and videos
  • Courses not properly syncing progress across devices

Requested features

5 requests
  • Add subtitles or transcripts for videos
  • Allow skipping of videos if content is already understood
  • Improve mobile app usability and stability
  • Provide more hands-on and interactive learning experiences
  • Offer more personalized learning paths and feedback

Outschool

Reported bugs

12 issues
  • App crashes and force quits frequently
  • Continuous loading symbols without data retrieval
  • Login failures on both app and website
  • App doesn't load class data properly
  • Join button doesn't connect to correct Zoom class
Show 7 more
  • Students stuck waiting for host to let them in
  • App incompatible with iPhone 16 Pro Max iOS 18
  • Classes not displaying in app
  • Network failure errors despite good connection
  • Child profile switching logs out user
  • Incorrect class shown when joining
  • Schedule not displaying correctly on app

Requested features

12 requests
  • Calendar view showing all scheduled classes
  • Search and filter functionality in app
  • Ability to save/favorite classes for later
  • Click-through to teacher profiles
  • Ability to message teachers from app
Show 7 more
  • Teacher notifications in app
  • Groups feature in app
  • Ability to switch between child profiles without logging out
  • Class linking and cross-referencing
  • Android app version
  • Teacher app version for educators
  • Late enrollment option for missed class signups

In-app purchases

None

Acellus

No in-app purchases

1 purchases

Outschool

One-time1
  • $10 in Outschool balance$14.99

Questions

Is Acellus free?
Acellus is free to download, with no in-app purchases.
Is Outschool free?
Outschool is free to download, with in-app purchases available.
Which has better reviews, Acellus or Outschool?
Acellus is rated higher. Acellus averages 4.5 out of 5 from 32K ratings, while Outschool averages 3.2 from 121 ratings.
Do Acellus or Outschool have ads?
Neither Acellus nor Outschool shows ads.
Which is updated more often, Acellus or Outschool?
Acellus ships an update every 3 months, and Outschool every 3 weeks. Most recently, Acellus was updated on October 29, 2026 and Outschool on October 24, 2026.

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