AP Prep vs Dolphin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AP Prep
This AI-powered learning app transforms study sessions into an adventure. It generates personalized learning materials from your notes, photos, or PDFs and offers interactive flashcards, quizzes, and review conversations. Track your progress, earn rewards, and master topics with intelligent review scheduling.
- AI-generated personalized learning materials
- Interactive flashcards and quizzes
- AI-powered review conversations
- Progress tracking with XP and rewards
- Spaced repetition for memory boost
- Multiple study modes
Read full descriptionHide full description
Blast off your learning with Lumi, the AI-powered astronaut tutor that turns your study sessions into an interstellar adventure. Explore galaxies of knowledge through interactive flashcards, quizzes, and review conversations, all tailored to how you learn best. Key Features: AI-Generated Courses: Upload notes, photos, or PDFs to generate personalized learning material in seconds Study Galaxies & Planets: Each course is a galaxy, and every lesson is a planet to explore Multiple Study Modes: Practice with flashcards, quizzes, fill-in-the-blanks & more Talk to Lumi: Review tricky concepts by talking with your friendly AI astronaut Track Progress: Earn XP, unlock new outfits for Lumi, and master topics as you go Spaced Repetition: Boost memory with intelligent review scheduling Whether you're prepping for exams, brushing up on concepts, or learning something new. Lumi Learn helps you stay consistent, curious, and confident. Download Lumi today and start learning with your own AI tutor in space. Let’s launch your brainpower! — Privacy Policy: https://slhdevs.github.io/Lumi/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Subscription Info: • Title: Lumi Pro • Length: Monthly subscription • Price: $7.99/month • Lumi offers a freemium experience, you can start learning for free and upgrade to Lumi Pro anytime to unlock full features and additional course slots. Subscription Info: • Title: Lumi Pro Yearly • Length: Yearly subscription • Price: $79.99/year • Lumi offers a freemium experience, you can start learning for free and upgrade to Lumi Pro anytime to unlock full features and additional course slots.
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
Read full descriptionHide full description
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 in-app purchases: Dolphin at none against AP Prep's 2. Dolphin also leads on rating (4.8 vs 4.4) and ratings volume (1.3K vs 29). AP Prep's advantage is review sentiment (94% vs 84%). On price, ads, monetization model 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. AP Prep sells 2 in-app purchases, starting at $7.99 per month. Dolphin asks for nothing beyond the download.
Dolphin holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Dolphin has 1.3K ratings behind it against 29, so its average is the more settled of the two. Written reviews complicate that: 94% of AP Prep's written reviews are positive against 84% of Dolphin's, so the app with the better star average is not the one people write more warmly about.
AP Prep ships an update monthly, Dolphin every 2 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | AP Prep | Dolphin |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (29 ratings) | 4.8 (1.3K ratings) — better |
| Positive reviews | 93.8% of reviews — better | 83.7% of reviews |
| Number of ratings | 29 | 1.3K — better |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 310 MB | 229 MB |
| Age rating | 4+ | 4+ |
| Developer | Samuel Lopez | PaloAI Inc. |
Customer experience
AP Prep
Dolphin
In-app purchases
AP Prep
- Lumi Pro Monthly Plan$7.991 Month
- Lumi Pro Yearly Plan$79.991 Year
Dolphin
No in-app purchases
