LumiSource vs Dolphin
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.
Dolphin
Master the Digital SAT with a unique, social media-inspired interface. Swipe through thousands of official practice questions with instant, short video explanations. The app intelligently adapts to your learning, focusing on your weak areas for efficient score improvement.
- 10,000+ Official Digital SAT Questions
- Short Video Solutions for Every Problem
- Personalized Learning Algorithm
- Spaced Repetition for Retention
- Frictionless Study Design
- Score Tracking
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Build a steady SAT and ACT study habit with Dolphin. Practice in a swipeable feed, work through explanations, and return to the questions and skills that need more attention. PRACTICE A LITTLE EVERY DAY Answer Math, Reading, English, and Science questions, review vocabulary, and set a daily learning goal. UNDERSTAND YOUR ANSWERS Use worked explanations, video solutions where available, and Pip the Tutor to explore a problem. Save questions and revisit mistakes as you study. MAKE ROOM TO FOCUS With your permission, Focus Mode uses Apple's Screen Time controls to block apps you choose on your selected schedule. Complete your lesson goal to unlock them, or take a break when you need one. KEEP YOUR MOMENTUM Track your streak and progress, and add Dolphin widgets to keep your learning goal close by. Dolphin offers optional in-app subscriptions. Features and content availability may vary. SAT is a trademark of the College Board, and ACT is a trademark of ACT, Inc. Dolphin is not affiliated with or endorsed by either organization.
Screenshots
Verdict
The clearest difference is update cadence: Dolphin at every 2 weeks against LumiSource's every 3 months. Dolphin also leads on ratings volume (1.3K vs 91). LumiSource's advantage is monetization model (free vs free with in-app purchases) and review sentiment (93% vs 84%). On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for LumiSource against 4.8 for Dolphin. That said, the two scores are not equally well evidenced: Dolphin has 1.3K ratings behind it against 91, 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 84% of Dolphin's.
LumiSource ships an update every 3 months, Dolphin every 2 weeks. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.
| Parameter | LumiSource | Dolphin |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (91 ratings) | 4.8 (1.3K ratings) |
| Positive reviews | 93.3% of reviews — better | 83.5% of reviews |
| Number of ratings | 91 | 1.3K — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 81 MB | 229 MB |
| Age rating | 4+ | 4+ |
| Developer | CaseHippo Inc | PaloAI Inc. |
Customer experience
LumiSource
Dolphin
In-app purchases
LumiSource
No in-app purchases
Dolphin
No in-app purchases
