LumiSource vs OnePrep
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.
OnePrep
Prepare for the SAT with a comprehensive study tool. Access thousands of practice questions, realistic mock exams, and AI-powered feedback. Get personalized guidance from an AI tutor to identify and improve weak areas for your dream score.
- Thousands of SAT-style practice questions
- Realistic timed mock exams
- Instant AI feedback and grading
- Personalized study guidance
- Progress tracking
- Cross-device compatibility
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All your SAT® prep in one place. OnePrep is the ultimate study companion for SAT® students. Practice with thousands of SAT-style questions, realistic mock exams, and AI-powered feedback designed to match the official SAT® format. Meet Prepy AI, your personal tutor. Get instant help with difficult questions, clear explanations, and personalized study guidance anytime. Key features Thousands of SAT-style practice questions with step-by-step explanations Realistic timed mock exams Instant AI feedback and grading Progress tracking to identify weak areas Study anywhere, anytime—OnePrep works seamlessly across all your devices. Join 250k+ students worldwide already improving their SAT® scores with OnePrep. Start studying today for free. Questions? contact@oneprep.xyz Terms of Use (EULA): https://www.oneprep.xyz/terms-of-service
Screenshots
Verdict
LumiSource and OnePrep both sit at 4.8 stars, but that hides the real split: 93% of LumiSource's written reviews are positive against 41% of OnePrep's. LumiSource also leads on in-app purchases (none vs 10) and ads (none vs shown). OnePrep's advantage is update cadence (every 5 days vs every 3 months) and ratings volume (735 vs 146). On price, rating, device support and iOS requirement 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. OnePrep sells 10 in-app purchases, starting at $28.49 per 7 days. LumiSource asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for LumiSource against 4.7 for OnePrep. That said, the two scores are not equally well evidenced: OnePrep has 735 ratings behind it against 146, so its average is the more settled of the two. Written reviews are what separate them: 93% of LumiSource's written reviews are positive against 41% of OnePrep's.
LumiSource ships an update every 3 months, OnePrep every 5 days. Both last shipped on November 5, 2026.
| Parameter | LumiSource | OnePrep |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (146 ratings) — better | 4.7 (735 ratings) |
| Positive reviews | 93.3% of reviews — better | 40.7% of reviews |
| Number of ratings | 146 | 735 — better |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 81 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | CaseHippo Inc | MyDojo Inc. |
Customer experience
LumiSource
OnePrep
In-app purchases
LumiSource
No in-app purchases
OnePrep
- OnePrep Pro (1 Week)$28.497 Days
- OnePrep Pro (1 Month)$99.991 Month
- OnePrep Pro (3 Months)$269.003 Months
- OnePrep Plus Exam Pass (8-14 Days)$80.00
- OnePrep Plus Exam Pass (15-28 Days)$85.00
- OnePrep Pro Exam Pass (0-7 Days)$89.00
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- OnePrep Pro Exam Pass (8-14 Days)$90.00
- OnePrep Pro Exam Pass (15-28 Days)$95.00
- OnePrep Pro Exam Pass (31-44 Days)$134.99
- OnePrep Pro Exam Pass (45-58 Days)$174.99
