x2VOL_ vs Linus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Customize service goals
- Centralize service hours
- Provide diverse service opportunities
- Track and report service hours
- Engage with nonprofits
- Generate Official Service Transcript™
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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.
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | x2VOL_ | Linus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (1.4K ratings) | 4.8 (798 ratings) — better |
| Positive reviews | 15.1% of reviews | 68.4% of reviews — better |
| Number of ratings | 1.4K — better | 798 |
| Update frequency | Every 3 months | Every 11 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 21 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | IntelliVOL | Linus Labs, Inc. |
Customer experience
x2VOL_
Linus
User reviews
x2VOL_
From 1.4K App Store ratingsWhat 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 ratingsWhat 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
x2VOL_
No in-app purchases
Linus
- Premium Quarterly3 Days trial$24.993 Months
- Turbo$24.991 Month
- Turbo3 Days trial$24.991 Month
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- 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








