Comparison

x2VOL_ vs Linus

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

Head to head
About

x2VOL_

This app streamlines service hour tracking for K-12 students, allowing customization of goals and centralization of hours. It connects students with nonprofits, verifies service records, and generates official transcripts for college and scholarship applications.

Highlights
  • Customize service goals
  • Centralize service hours
  • Provide diverse service opportunities
  • Track and report service hours
  • Engage with nonprofits
  • Generate Official Service Transcript™
Features
Read full description

x2VOL is the leading student service hour tracking app in K-12 education. With x2VOL you can customize service goals, centralize service hours, and provide diverse service opportunities. x2VOL provides students with an online and mobile way to track and report service hours specific to the goals of their school while engaging them with nonprofits. Service records are authenticated and verified for each student and can be attached to their college applications, scholarship applications, or resumes through x2VOL’s Official Service Transcript™. x2VOL is a 3-time Winner of the District Administration Top 100 Products; was a "Finalist" in the "Cool Tool Award" from the EdTech Digest Awards Program; recognized by eSchoolMedia as an Honorable Mention in the 2014-15 Readers’ Choice Awards; was a finalist in the 2015 REVERE Awards; and two years in a row, won Best Social-Emotional Development Solution in the SIIA CODiE Awards in 2017 and 2018.

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

Screenshots

x2VOL_4 screens
Linus4 screens

Verdict

The call

The clearest difference is review sentiment: Linus at 68% against x2VOL_'s 15%. Linus also leads on rating (4.8 vs 4.2) and update cadence (every 11 days vs every 3 months). x2VOL_'s advantage is in-app purchases (none vs 10) and ads (none vs shown). On price, ratings volume 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 10 in-app purchases, starting at $24.99 per 3 months. x2VOL_ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Linus holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 1.4K and 798 respectively. Written reviews point the same way: 15% of x2VOL_'s written reviews are positive against 68% of Linus's.

UpkeepUpdate frequency

x2VOL_ ships an update every 3 months, Linus every 11 days. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

Scorecard7 real differences · 3 level
x2VOL_ versus Linus: the parameters behind the verdict, then further details
Parameterx2VOL_Linus
PriceFreeFree
Rating4.2 (1.4K ratings)4.8 (798 ratings) — better
Positive reviews15.1% of reviews68.4% of reviews — better
Number of ratings1.4K — better798
Update frequencyEvery 3 monthsEvery 11 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size21 MB93 MB
Age rating4+4+
DeveloperIntelliVOLLinus Labs, Inc.

Customer experience

x2VOL_

All ratings1,371 ratings
Positive78.4%
Neutral5.0%
Negative16.6%
Written reviews53 reviews
Positive15.1%
Neutral9.4%
Negative75.5%

Linus

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

User reviews

x2VOL_

From 1.4K App Store ratings

What we love

  • 💯 Easiest way to track service hours
  • 🚀 Great app, makes it much easier and more convenient to request verification for service hours

Room to improve

  • 🐛 Terrible user interface, app is broken and doesn't work on iPad
  • 🐛 Completely broken, unable to log in
  • 🐛 Slow, not synced to website, needs an update but no updates available
  • 🐛 Trouble logging in, can't submit hours, keeps kicking user out of the app
  • 🐛 Doesn't work, can't submit hours, forces user to use the website instead

Linus

From 798 App Store ratings

What we love

  • 💪 Perfect app
  • 👍 Nice game
  • 👍 Enjoyable!
  • 👍 Best SAT app
  • 👍 Easily the BEST FREE SAT Resource out there!

Bugs and requests

x2VOL_

Reported bugs

4 issues
  • Login issues, unable to log in even with correct credentials
  • App says it needs an update but no updates are available
  • Hours submitted disappear or don't sync properly
  • App forces user to go to website instead of working in the app

Requested features

3 requests
  • Add drafts to save hours before submitting
  • Allow users to change information about the company they did service with
  • Increase the number of hours that can be submitted at once

Linus

Requested features

2 requests
  • Personalized practice
  • Practice tests

In-app purchases

None

x2VOL_

No in-app purchases

10 purchases

Linus

Subscriptions10
  • Premium Quarterly3 Days trial$24.993 Months
  • Turbo$24.991 Month
  • Turbo3 Days trial$24.991 Month
Show 7 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 Yearly3 Days trial$499.001 Year
  • Turbo Yearly3 Days trial$600.001 Year

Questions

Is x2VOL_ free?
x2VOL_ is free to download, with no in-app purchases.
Is Linus free?
Linus is free to download, with in-app purchases available.
Which has better reviews, x2VOL_ or Linus?
Linus is rated higher. x2VOL_ averages 4.2 out of 5 from 1.4K ratings, while Linus averages 4.8 from 798 ratings.
Do x2VOL_ or Linus have ads?
Linus shows ads; x2VOL_ does not.
Which is updated more often, x2VOL_ or Linus?
x2VOL_ ships an update every 3 months, and Linus every 11 days. Most recently, x2VOL_ was updated on November 11, 2026 and Linus on November 8, 2026.

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