Speed Trigonometry vs Mind
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Speed Trigonometry
This app helps students quickly memorize the unit circle. It quizzes users on sine, cosine, tangent, and inverse trigonometric values for key angles. Developed by students for students, it's ideal for precalculus learners.
- Unit circle memorization
- Quizzes on trig values
- Focus on key angles
- Sine, cosine, tangent, inverse values
- Student-developed
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Speed Trig is the #1 app for memorizing the unit circle fast. Designed for students enrolled in Precalculus, the app quizzes you on the sine, cosine, tangent, and inverse trig values of the four main unit circle angles: π/2, π/3, π/4, and π/6. Our app was made by students, for students.
Mind
This app offers a distraction-free learning experience, combining brain training exercises, SAT vocabulary practice, and academic writing tools. Track your progress, improve cognitive skills, and refine your English writing.
- Brain training exercises
- SAT vocabulary flashcards
- Academic writing tools
- Progress tracking
- Distraction-free interface
- Cognitive skill improvement
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MindForge — SAT Prep, Brain Training & AI Tutor MindForge is your all-in-one SAT prep and cognitive training app. Whether you're targeting a top SAT score or sharpening your mind for academic success, MindForge gives you everything you need in one powerful, distraction-free experience. Complete SAT Preparation Practice with 1,500+ SAT Math questions across 11 topics, 1,000+ Reading & Writing questions, and 7 full-length Mock SAT tests with scaled scores. Smart Practice sessions powered by AI target your weakest areas automatically, so every minute of study counts. AI Tutor Get instant AI-powered explanations for every wrong answer. Understand exactly what went wrong, learn the key rule, and practice a similar question — all in seconds. 2,500+ SAT Vocabulary Words Master essential SAT vocabulary with 200 curated flashcard decks organized by topic and difficulty. Study smarter with EN/DE/FR support, progress tracking, and accuracy insights. Brain Training — 11 Cognitive Games Boost memory, focus, reaction speed, and mental agility with 11 scientifically inspired brain games including Dual N-Back, Speed Math, Sequence Recall, Stroop Challenge, and more. Daily challenges and XP streaks keep you coming back. Smart Analytics Track your estimated SAT score, accuracy by topic, study streaks, Brain XP, and overall progress — all in one clear dashboard. Academic Rewriter Transform your writing instantly with AI-powered tools that rewrite essays and answers in 6 academic styles. Perfect for students and advanced English learners. Premium Experience No ads. No account required. Clean interface. Available in English, German, and French. Unlock full access with a premium subscription or lifetime purchase. Free trial available for eligible users. Cancel anytime.
Screenshots
Verdict
The clearest difference is in-app purchases: Speed Trigonometry at none against Mind's 2. Mind's advantage is update cadence (every 5 months vs every 14 months) and iOS requirement (13.0 vs 18.5). 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. Mind sells 2 in-app purchases, starting at $29.99 per year. Speed Trigonometry asks for nothing beyond the download.
Speed Trigonometry ships an update every 14 months, Mind every 5 months. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.
| Parameter | Speed Trigonometry | Mind |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 14 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Nick Petroni | Emad Arrish |
Customer experience
Speed Trigonometry
Mind
In-app purchases
Speed Trigonometry
No in-app purchases
Mind
- Premium Lifetime7 Days trial$29.991 Year
- Premium Lifetime$59.99
Questions
Is Speed Trigonometry free?
Is Mind free?
Do Speed Trigonometry or Mind have ads?
Which is updated more often, Speed Trigonometry or Mind?
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