Comparison

Linus vs Proll

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

Head to head
About

Linus

This app offers a gamified approach to preparing for the new Digital SAT. It provides targeted practice for Math, Vocabulary, and Reading sections, with features like daily quests and progress tracking to make studying engaging and effective.

Highlights
  • Gamified learning with quests and streaks
  • Simulates Bluebook testing experience
  • Targeted Math, Vocabulary, and Reading practice
  • Smart study planner for bite-sized lessons
  • Instant feedback on answers
  • Progress tracking
Features
Read full description

Stop studying harder. Start studying smarter for the new Digital SAT. Linus is the SAT prep app built for how the test actually works now. Adaptive practice that mirrors the real Digital SAT format, so nothing on test day surprises you. WHY STUDENTS CHOOSE LINUS: - 250+ point score improvement guarantee - Adaptive practice that matches the real Digital SAT - Math, Reading, Writing, and Vocabulary all in one app - Personalized study plan based on YOUR test date - Gamified daily practice that actually sticks - Built specifically for the new Digital SAT format START FREE, UPGRADE WHEN YOU'RE READY Try Linus free for 3 days. Practice real SAT questions, see your score improve, then decide. No commitment until you're convinced. HOW IT WORKS Set your target score, enter your test date, and Linus builds a study plan around YOUR timeline. Whether your SAT is in 2 weeks or 6 months, Linus adapts to make every study session count. WHAT MAKES LINUS DIFFERENT Most test prep apps just throw practice questions at you. Linus tracks what you're getting wrong, adapts in real time, and focuses your study time where it matters most. It's like having a private SAT tutor in your pocket. Rated 4.8 stars by students who raised their scores. Questions? Reach us at support@linusprep.com Disclaimer: SAT and BigFuture are trademarks registered and owned by the College Board, which is not affiliated with and does not endorse this product. Bluebook is a trademark of the College Board. WEBSITE: https://linusprep.com TERMS OF USE: https://linusprep.com/legal PRIVACY POLICY: https://linusprep.com/legal/privacy

About

Proll

This app rewards users with screen time for completing real-world tasks, including physical activity and academic work. It locks distracting apps until time is earned, offering customizable goals and optional schedules for focused work sessions.

Highlights
  • Earn screen time by completing tasks
  • Task-based app unlocking
  • Upload and verify work for rewards
  • Physical activity tracking for screen time
  • Focus sessions with app locking
  • Customizable goals and optional schedules
Read full description

Key Features: Earn Screen Time Screen time isn’t given—it’s earned. Complete real-world tasks to unlock access to distracting apps. Task-Based Unlocking Earn time by completing activities like SAT questions or other standardized test prep. App Locking Distracting apps stay inaccessible until earned time is available—no bypassing, no “just five more minutes.” Flexible Goals Customize how much work earns how much time, based on your priorities and routines. Minimal, Intentional Design No shame, no pressure—just a clear system that rewards discipline. Proll requires a paid subscription ($4/week or $10/month auto-renewing) to lock distracting apps and access full SAT prep features. 3 Day Free Trial before you commit to the monthly subscription! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Linus4 screens
Proll4 screens

Verdict

The call

The clearest difference is ads: Proll at none against Linus's shown. Proll also leads on review sentiment (100% vs 68%) and monetization model (free vs free with in-app purchases). Linus's advantage is update cadence (every 11 days vs every 2 months) and ratings volume (797 vs 14). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Linus sells 14 in-app purchases, starting at $24.99 per 3 months and Proll sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Linus against 4.6 for Proll. That said, the two scores are not equally well evidenced: Linus has 797 ratings behind it against 14, so its average is the more settled of the two. Written reviews are what separate them: 68% of Linus's written reviews are positive against 100% of Proll's.

UpkeepUpdate frequency

Linus ships an update every 11 days, Proll every 2 months. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Linus versus Proll: the parameters behind the verdict, then further details
ParameterLinusProll
PriceFreeFree
Rating4.8 (797 ratings) — better4.6 (14 ratings)
Positive reviews68.4% of reviews100.0% of reviews — better
Number of ratings797 — better14
Update frequencyEvery 11 days — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.6
Further details — not scored
Size93 MB36 MB
Age rating4+4+
DeveloperLinus Labs, Inc.John Edward Baker Bruce

Customer experience

Linus

All ratings722 ratings
Positive95.4%
Neutral1.1%
Negative3.5%
Written reviews38 reviews
Positive68.4%
Neutral2.6%
Negative28.9%

Proll

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Linus

Requested features

2 requests
  • Personalized practice
  • Practice tests

Proll

Not enough reviews yet to summarise bugs or requests.

In-app purchases

14 purchases

Linus

Subscriptions13
  • Premium Quarterly3 Days trial$24.993 Months
  • Turbo$24.991 Month
  • Turbo3 Days trial$24.991 Month
Show 10 more
  • Premium Yearly3 Days trial$49.991 Year
  • Turbo Monthly3 Days trial$99.001 Month
  • Turbo Monthly3 Days trial$100.001 Month
  • Turbo$149.991 Year
  • Turbo3 Days trial$149.991 Year
  • Turbo$150.001 Month
  • Linus Premium$249.003 Months
  • Turbo Yearly3 Days trial$499.001 Year
  • Turbo$500.001 Year
  • Turbo Yearly3 Days trial$600.001 Year
One-time1
  • SAT Test Date Access$79.00
2 purchases

Proll

Subscriptions2
  • Proll Plus Weekly$3.997 Days
  • Proll Plus Monthly3 Days trial$9.991 Month

Questions

Is Linus free?
Linus is free to download, with in-app purchases available.
Is Proll free?
Proll is free to download, with in-app purchases available.
Which has better reviews, Linus or Proll?
Linus is rated higher. Linus averages 4.8 out of 5 from 797 ratings, while Proll averages 4.6 from 14 ratings.
Do Linus or Proll have ads?
Linus shows ads; Proll does not.
Which is updated more often, Linus or Proll?
Linus ships an update every 11 days, and Proll every 2 months. Most recently, Linus was updated on October 24, 2026 and Proll on October 24, 2026.

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