LumiSource vs PrepGo
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.
PrepGo
Master AP exams with a gamified learning experience. Study guides, flashcards, and quizzes are presented in a fun, visual format to help you track progress and identify weak spots. Conquer your exams with expert-verified content and engaging practice questions.
- Expert-verified study guides
- Gamified visual learning map
- Daily streaks and energy system
- Smart flashcards
- AP-style quizzes
- Progress tracking dashboard
- Covers 30+ AP subjects
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Tired of the AP grind? Stop cramming and start playing. PrepGo is your new secret weapon to get a 5. We get it. Studying for AP® exams is stressful and boring. That's why we rebuilt the entire AP learning experience from the ground up, inspired by the Duolingo-style you already love. We make mastering complex subjects simple, motivating, and highly effective. PrepGo is built on three core principles: 1. LEARN WITH EXPERT-VERIFIED CONTENT No more confusing textbooks. Start with our in-depth Study Guides designed by AP experts. We break down every topic for subjects like AP English Literature or AP Statistics from the official College Board (CB) guidelines into clear, manageable explanations. 2. STUDY IN A FUN, GAMIFIED WAY This isn't just another boring study app. - Visual Learning Map: Your entire course is a visual path. Unlock new topics and "levels" like you would in a game. - Streaks & Energy: Build your daily study Streak to stay motivated. Use your daily Energy (25 per day) to tackle quiz questions and prove your skills. - Proven 3-Step Loop: Master everything with our scientific Learn → Review → Practice method. 3. TRACK YOUR MASTERY (So You Know You're Ready) Stop guessing if you're prepared. Our detailed Progress dashboard gives you a 360-degree view of your knowledge. - Track your accuracy by topic, whether it's for AP Calculus AB or AP Human Geography. - Watch your study time grow. - Instantly identify your weak spots, so you know exactly what to focus on. Key Features Students Love: - Smart Flashcards: Use our Review module to lock in key concepts and definitions. - AP-Style Quizzes: Test your knowledge with hundreds of Practice questions that mirror the real exam. - All 30+ AP Subjects: We've got you covered for your entire schedule. Get expert-verified prep for AP U.S. History (APUSH), AP Psychology, AP World History: Modern (APWH), AP English Language, AP Biology (AP Bio), AP Chemistry, AP Physics 1, and all other 30+ courses! - Detailed Feedback: Get instant explanations for every quiz question, so you learn from your mistakes. Don't just study for your APs—conquer them. Download PrepGo today and turn that study grind into a game you can win! --- AP® is a registered trademark of the College Board, which is not affiliated with, and does not endorse, this app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://prepgo.com/privacy-policy
Screenshots
Verdict
The clearest difference is review sentiment: LumiSource at 93% against PrepGo's 23%. LumiSource also leads on rating (4.8 vs 4.3) and in-app purchases (none vs 10). PrepGo's advantage is update cadence (every 9 days vs every 3 months). On price, ratings volume, ads 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. PrepGo sells 10 in-app purchases, starting at $19.99 per month. LumiSource asks for nothing beyond the download.
LumiSource holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 146 and 315 respectively. Written reviews point the same way: 93% of LumiSource's written reviews are positive against 23% of PrepGo's.
LumiSource ships an update every 3 months, PrepGo every 9 days. Both last shipped on November 5, 2026.
| Parameter | LumiSource | PrepGo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (146 ratings) — better | 4.3 (315 ratings) |
| Positive reviews | 93.3% of reviews — better | 22.7% of reviews |
| Number of ratings | 146 | 315 — better |
| Update frequency | Every 3 months | Every 9 days — better |
| Ads | No | No |
| 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 | 15.0 |
| Further details — not scored | ||
| Size | 81 MB | 84 MB |
| Age rating | 4+ | 4+ |
| Developer | CaseHippo Inc | StudyX Inc. |
Customer experience
LumiSource
PrepGo
In-app purchases
LumiSource
No in-app purchases
PrepGo
- PrepGo Plus Monthly3 Days trial$19.991 Month
- PrepGo Plus Monthly1 Month trial$29.991 Month
- PrepGo Plus Monthly7 Days trial$29.991 Month
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- PrepGo Plus Monthly7 Days trial$49.991 Month
- PrepGo Plus Monthly14 Days trial$49.991 Month
- PrepGo Plus Monthly$49.991 Month
- PrepGo Plus 6-Month7 Days trial$89.996 Months
- PrepGo Plus Annual14 Days trial$239.991 Year
- PrepGo Plus Annual$239.991 Year
- PrepGo Plus Annual7 Days trial$239.991 Year








