LumiSource vs Proll
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LumiSource
Prepare for AP exams with condensed study guides and realistic practice tests. This app offers mobile-optimized content for efficient review anytime, anywhere. It currently supports over 10 AP subjects.
- Condensed study guides
- Realistic practice tests
- Detailed answer breakdowns
- Mobile-optimized for on-the-go study
- Supports over 10 AP subjects
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Crush your AP exams and the SAT with LumiSource, your all-in-one review hub. Whether you're reviewing last-minute or planning ahead, LumiSource helps you prep faster and smarter with: Study Guides: condensed, high-yield content made for rapid review Practice Questions: realistic questions with detailed answer breakdowns SAT Prep: targeted review and practice to help you boost your score Mobile-optimized: study anywhere, anytime Now supporting the SAT and 22 AP courses. Start reviewing today with LumiSource.
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.
- 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
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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
Verdict
The clearest difference is in-app purchases: LumiSource at none against Proll's 2. LumiSource also leads on ratings volume (130 vs 14). On price, rating, review sentiment 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
Both are free to download. Proll sells 2 in-app purchases, starting at $3.99 per 7 days. LumiSource asks for nothing beyond the download.
LumiSource holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: LumiSource has 130 ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 93% of LumiSource's written reviews are positive against 100% of Proll's, so the app with the better star average is not the one people write more warmly about.
LumiSource ships an update every 3 months, Proll every 2 months. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.
| Parameter | LumiSource | Proll |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (130 ratings) — better | 4.6 (14 ratings) |
| Positive reviews | 93.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 130 — better | 14 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 81 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | CaseHippo Inc | John Edward Baker Bruce |
Customer experience
LumiSource
Proll
In-app purchases
LumiSource
No in-app purchases
Proll
- Proll Plus Weekly$3.997 Days
- Proll Plus Monthly3 Days trial$9.991 Month
