Comparison

Theory Forge vs Trinity Theory Practice

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

Head to head
About

Theory Forge

This app offers focused repetition drills to help musicians of all levels master music theory fundamentals. It covers intervals, scales, chords, and staff reading with progress tracking and achievement badges.

Highlights
  • Interval drills
  • Scale identification
  • Triad construction
  • Staff reading practice
  • Speed and mixed drills
  • Progress tracking
  • Achievement badges
Features
Read full description

Theory Forge is a no-nonsense music theory trainer built for musicians who want to internalize the fundamentals through focused repetition — not passive reading. Whether you're a complete beginner or brushing up after years away, Theory Forge meets you where you are and builds real fluency through drilling, not just familiarity. DRILL MODES • Intervals — identify and name intervals by ear and notation • Scales — major, minor, modes, and more • Triads — root position and inversions • Build a Chord — construct chords from the ground up • Build a Scale — assemble scales step by step • Staff Reading — name notes on treble and bass clef • Speed Drill — race the clock on staff reading • Mixed Drill — randomized questions across all categories FOUNDATIONS Seven short lessons covering the core vocabulary before you drill. Complete them in order for best results, or jump straight in if you know your way around a staff. TRACK YOUR PROGRESS Session streaks, per-mode accuracy percentages, and achievement badges keep you motivated and show exactly where to focus next. BUILT FOR EVERYONE Beginner to advanced. Guitarist, pianist, vocalist, producer — if you read or write music, this is for you. 100% FREE. NO STRINGS. No ads. No paywalls. No subscriptions. No in-app purchases. Ever. Just clean, efficient drilling that respects your time and intelligence.

About

Trinity Theory Practice

Features
Read full description

Trinity Theory Practice helps young musicians master music theory for Trinity Grades 1 to 5 — with friendly, bite-size practice that actually sticks. PRACTICE EVERY TOPIC Intervals, note reading, key signatures, scales, triads, cadences, rhythm, bar lines and more. Quick drills give instant feedback, so mistakes turn into learning. LESSONS FOR YOUR GRADE Syllabus-ordered lessons match the grade you choose, so you always know what to study next. FULL MOCK EXAMS Sit a timed mock exam that mirrors the written theory paper, then review every answer and track your scores over time. LEARN FROM MISTAKES Every wrong answer is saved to a personal mistake book for focused review. DESIGNED FOR YOUNG LEARNERS Big, clear notation and a friendly owl guide make theory approachable for ages 5–14, on iPad or iPhone. FREE TO START Practice 10 questions a day for free. Upgrade to Pro for unlimited practice, mock exams, and AI-checked melody writing. Pro is available monthly, yearly, or as a one-time lifetime purchase. Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period; manage or cancel anytime in your App Store account settings. Privacy Policy: https://theorypractice.app/privacy Terms of Use (EULA): https://theorypractice.app/terms

Screenshots

Theory Forge3 screens
Trinity Theory Practice4 screens

Verdict

The call

The clearest difference is in-app purchases: Theory Forge at none against Trinity Theory Practice's 6. Trinity Theory Practice's advantage is iOS requirement (13.0 vs 15.0). 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. Trinity Theory Practice sells 6 in-app purchases, starting at $2.99 per month. Theory Forge asks for nothing beyond the download.

Scorecard2 real differences · 7 level
Theory Forge versus Trinity Theory Practice: the parameters behind the verdict, then further details
ParameterTheory ForgeTrinity Theory Practice
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequency—Every 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size18 MB100 MB
Age rating4+4+
DeveloperDANIEL WADE IVERSFLY SKY PTY LTD

In-app purchases

None

Theory Forge

No in-app purchases

6 purchases

Trinity Theory Practice

Subscriptions5
  • Monthly$2.991 Month
  • Weekly$3.997 Days
  • Monthly$7.991 Month
Show 2 more
  • Yearly$12.991 Year
  • 3 Months$16.993 Months
One-time1
  • Lifetime$14.99

Questions

Is Theory Forge free?
Theory Forge is free to download, with no in-app purchases.
Is Trinity Theory Practice free?
Trinity Theory Practice is free to download, with in-app purchases available.
Do Theory Forge or Trinity Theory Practice have ads?
Neither Theory Forge nor Trinity Theory Practice shows ads.

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