Comparison

Speed Trigonometry vs Mind

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Unit circle memorization
  • Quizzes on trig values
  • Focus on key angles
  • Sine, cosine, tangent, inverse values
  • Student-developed
Features
Read full description

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.

About

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.

Highlights
  • Brain training exercises
  • SAT vocabulary flashcards
  • Academic writing tools
  • Progress tracking
  • Distraction-free interface
  • Cognitive skill improvement
Features
Read full description

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

Speed Trigonometry3 screens
Mind4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Speed Trigonometry versus Mind: the parameters behind the verdict, then further details
ParameterSpeed TrigonometryMind
PriceFreeFree
Rating4.8 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 14 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.513.0 — better
Further details — not scored
Size2 MB34 MB
Age rating4+4+
DeveloperNick PetroniEmad Arrish

Customer experience

Speed Trigonometry

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Mind

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Speed Trigonometry

No in-app purchases

2 purchases

Mind

Subscriptions1
  • Premium Lifetime7 Days trial$29.991 Year
One-time1
  • Premium Lifetime$59.99

Questions

Is Speed Trigonometry free?
Speed Trigonometry is free to download, with no in-app purchases.
Is Mind free?
Mind is free to download, with in-app purchases available.
Do Speed Trigonometry or Mind have ads?
Neither Speed Trigonometry nor Mind shows ads.
Which is updated more often, Speed Trigonometry or Mind?
Speed Trigonometry ships an update every 14 months, and Mind every 5 months. Most recently, Speed Trigonometry was updated on October 7, 2026 and Mind on October 16, 2026.

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