Mastermind vs Ledoly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mastermind
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In an ever-evolving educational landscape, students are increasingly seeking innovative tools to enhance their learning experiences. Enter Mastermind, a cutting-edge educational app designed specifically for university students. Mastermind integrates advanced technology with pedagogical best practices to offer a comprehensive platform for learning, collaboration, and personal growth. At the core of Mastermind lies a vision to empower students to take control of their educational journeys. Recognizing that each student has unique learning styles, preferences, and goals, Mastermind aims to create a personalized and flexible learning environment. The app is designed to adapt to individual needs, making it an invaluable tool for students navigating the challenges of university life.
Ledoly
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HOW AMERICAN DO YOU SOUND? FIND OUT IN 60 SECONDS. Read one sentence aloud. AI scores your American accent out of 10, shows a green/amber/red heatmap of every word, and tells you exactly where to start. Free. No credit card. About a minute. Your grammar is fine. Your vocabulary is fine. But when you open your mouth, people hear your accent before your ideas. Ledoly is the American-English speaking and accent coach built for Vietnamese professionals who need to be understood clearly at work. START WITH THE 60-SECOND ACCENT AUDIT • Read one fixed sentence and get an instant Glass Ceiling Score out of 10 • A per-word heatmap: green is clear, amber needs work, red is unclear • Accuracy, fluency, completeness, and prosody bars • A CEFR-style level and a recommended starting point • Severity-ranked issues so you know what to focus on first AN AI COACH THAT HEARS WHAT NATIVES HEAR • Pronunciation graded phoneme by phoneme, not just word by word • Tuned to the sounds Vietnamese speakers find hardest — missing ending /s/, flat /th/, the American /r/, and word-stress errors • Drill practice sentences for word-by-word coaching • A pronunciation profile that tracks your strongest and weakest sounds • Honest grading: if a clip can't be scored, it says so instead of faking a number A REAL SPEAKING COURSE, NOT FLASHCARD FILLER • 77 interactive lessons across 16 modules on a 23-level Spiral Roadmap • CEFR-aligned from the very beginning through advanced • A guided lesson player: one activity at a time, check your answer, get feedback, continue • A recurring cast at The Hub — Alex, Sam, Sofia, Marco, Yuki, and Priya • Smart flashcards with spaced repetition (Again / Hard / Good / Easy), optional IPA and audio LIVE 1-ON-1 LESSONS WITH AMERICAN COACHES • Browse a directory of native American-accent coaches by rating and specialization • Review your completed live lessons with AI summaries and transcripts • Keep your streak, earn XP, and watch your level climb WHO IT'S FOR Vietnamese professionals — engineers, product managers, nurses — who already speak English but whose accent holds them back with American colleagues, clients, and patients. Also anyone preparing to live or work in the US. HOW IT WORKS 1. Take the free 60-Second Accent Audit and get your Glass Ceiling Score 2. Follow your recommended starting level through the course 3. Drill weak sounds with the AI coach and smart flashcards 4. Practice daily to build a streak — and browse American-accent coaches for live 1-on-1 practice One account works on the Ledoly website and the app. Sign in with email or with Apple. Microphone access is used only to record and score your pronunciation. You can request deletion of your voice recordings, and delete your account anytime from Settings > Account. Ready to hear how American you sound? Take the 60-Second Accent Audit — free, in about a minute. Questions? Visit https://ledoly.com/support
Screenshots
Verdict
The clearest difference is in-app purchases: Ledoly at none against Mastermind's 1. Mastermind's advantage is iOS requirement (12.4 vs 15.1). On price, 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. Mastermind sells 1 one-off in-app purchase. Ledoly asks for nothing beyond the download.
| Parameter | Mastermind | Ledoly |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.4 — better | 15.1 |
| Further details — not scored | ||
| Size | 194 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Yosef Albeladi | LEARN VIETNAMESE WITH SVFF COMPANY LIMITED |
In-app purchases
Mastermind
- Foundation First Exam (J)$50.00
Ledoly
No in-app purchases









