Comparison

Linus vs Radiant

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

Radiant

This app offers guided speaking challenges to enhance articulation, speech clarity, and confidence. It focuses on natural improvements by helping users understand their speaking patterns and make them more effective in everyday conversations.

Highlights
  • Guided speaking challenges
  • Improve articulation
  • Enhance speech clarity
  • Boost speaking confidence
  • Track speaking patterns
  • Natural speech improvement
Features
Read full description

Radiant helps you improve articulation, speech clarity, and speaking confidence through short, guided speaking challenges. Practice speaking in a calm, supportive space designed to help you slow down, speak clearly, and feel more confident using your voice. Each challenge is simple, focused, and easy to fit into your day. Instead of trying to “fix” your voice, Radiant helps you understand how you speak and make natural improvements that add up over time. What Radiant helps you improve: - Everyday clarity: Practice speaking the way you actually talk—not scripted speeches. Learn how to express your thoughts more smoothly and clearly in real conversations. - Sound more thoughtful, effortlessly: See patterns in pacing, pauses, and common habits like overusing “like” or “um,” so your words land with more confidence and credibility. - Pause without awkwardness: Learn how to slow down and think mid-sentence without losing your place or sounding unsure. - Polished, not robotic: Radiant helps you sound put-together while still sounding like yourself. - Progress you can feel: Watch your everyday speaking become calmer, clearer, and more intentional—one session at a time. You already know what you want to say. Radiant helps you say it better. Beyond the first challenge, all other challenges will require the customer to utilize a free trial (expires within 3 days and transitions to a paid plan) or a paid plan (post-trial). This means to access any app features the user must purchase a weekly or annual subscription. The following do not require a purchase: Onboarding Flow The following do require a purchase: Speaking Challenges Reading Challenges Progress Tracking Terms of Use (EULA): https://radiant-app.vercel.app/terms-of-service Privacy Policy: https://radiant-app.vercel.app/privacy-policy

Screenshots

Linus4 screens
Radiant4 screens

Verdict

The call

The clearest difference is monetization model: Linus at free with in-app purchases against Radiant's subscription. Linus also leads on review sentiment (68% vs 37%). Radiant's advantage is ads (none vs shown). On price, rating, ratings volume 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. Linus sells 14 in-app purchases, starting at $24.99 per 3 months and Radiant sells 14 in-app purchases, starting at $1.99 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 4.8 for Radiant. Both are backed by a comparable volume of ratings — 797 and 974 respectively. Written reviews are what separate them: 68% of Linus's written reviews are positive against 37% of Radiant's.

UpkeepUpdate frequency

Linus ships an update every 11 days, Radiant every 10 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Linus versus Radiant: the parameters behind the verdict, then further details
ParameterLinusRadiant
PriceFreeFree
Rating4.8 (797 ratings)4.8 (974 ratings) — better
Positive reviews68.4% of reviews — better36.8% of reviews
Number of ratings797974 — better
Update frequencyEvery 11 daysEvery 10 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size93 MB123 MB
Age rating4+4+
DeveloperLinus Labs, Inc.Loshi Technologies, LLC

Customer experience

Linus

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

Radiant

All ratings956 ratings
Positive95.1%
Neutral1.5%
Negative3.5%
Written reviews57 reviews
Positive36.8%
Neutral3.5%
Negative59.6%

Bugs and requests

Linus

Requested features

2 requests
  • Personalized practice
  • Practice tests

Radiant

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
14 purchases

Radiant

Subscriptions14
  • Radiant Gold Weekly$1.997 Days
  • Radiant Gold Weekly$2.997 Days
  • Radiant Gold Weekly$3.997 Days
Show 11 more
  • Radiant Gold Weekly5 variants$6.997 Days
  • Radiant Gold Annual7 Days trial$9.991 Year
  • Radiant Gold Weekly4 variants$9.997 Days
  • Radiant Gold Annual7 Days trial$19.991 Year
  • Radiant Gold Annual7 Days trial$29.991 Year
  • Radiant Gold Annual7 Days trial$39.991 Year
  • Radiant Gold Annual3 Days trial$49.991 Year
  • Radiant Gold Annual3 Days trial$59.991 Year
  • Radiant Gold Annual3 Days trial$79.991 Year
  • Radiant Gold Annual$109.991 Year
  • Radiant Gold Annual$119.991 Year

Questions

Is Linus free?
Linus is free to download, with in-app purchases available.
Is Radiant free?
Radiant is free to download, with in-app purchases available.
Which has better reviews, Linus or Radiant?
Radiant is rated higher. Linus averages 4.8 out of 5 from 797 ratings, while Radiant averages 4.8 from 974 ratings.
Do Linus or Radiant have ads?
Linus shows ads; Radiant does not.
Which is updated more often, Linus or Radiant?
Linus ships an update every 11 days, and Radiant every 10 days. Most recently, Linus was updated on October 24, 2026 and Radiant on October 28, 2026.

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