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English Test Coach vs Math Builders

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

English Test Coach compared with Math Builders
DetailEnglish Test Coach logo English Test CoachMath Builders logo Math Builders
What it doesIELTS writing practice with AI band estimates and annotated sample answers Master multiplication, division, addition, and subtraction facts with 2-to-5-minute daily sessions using time-aware spaced repetition.
StageNot given Not given
FoundedNot given Not given
Based inGB US
Pricing modelFreemium Freemium
PricingStarter: Free (3 AI writing checks per month). Pro: £12/month (unlimited writing checks with fair-use limits, 60 full rewrites monthly). Exam passes: 1-month £12, 3-month £24, 12-month £49 (one-off, never renews). Free parent account with one child and six core packs. Monthly plan $11.99/month. Yearly plan $99.00/year. 3-year plan $189.00 billed every 3 years. All premium plans include additional children, combined packs, full fluency map, advanced progress views, personalized worksheets, and Printables Lab.
Key features
  • AI band score estimates across four writing criteria
  • Sentence-level corrections and revision priorities
  • Original practice questions for Academic and General Training
  • Annotated sample answers with explanations
  • Writing workspace with timer
  • Speaking practice with recordings and self-review
  • Listening exercises with explanations
  • Band progress chart for saved checks
  • AI essay planner with outlines and vocabulary
  • Writing mock pack with 5 timed mocks
  • Adaptive spaced-repetition engine that schedules each fact individually based on response speed and accuracy
  • 2-to-5-minute daily practice sessions
  • Colorful fluency map showing mastered, due, slow, missed, and ready-for-review facts
  • Progress forecast showing pack mastery percentage, practice time remaining, and days to completion
  • Six free core packs covering addition, subtraction, multiplication through 12, and division through 12
  • Personalized weak-fact worksheets with answer keys (premium)
  • Printables Lab for individually tailored worksheets (premium)
  • Support for multiple children or classroom students
  • Combined packs and through-24 fact packs (premium)
  • Google or email sign-in with no credit card required to start
What makes it different
  • Estimated accuracy tested on 27 published IELTS responses with examiner bands
  • Focused next step for revision based on four writing criteria
  • Independent service not affiliated with official IELTS
  • All writing kept private to user account
  • Original questions and annotated sample answers
  • Uses time-aware spaced repetition that reviews facts near the forgetting curve rather than on fixed delays, maximizing retention efficiency
  • Short 2-to-5-minute sessions designed to fit into actual family routines without becoming another 30-minute curriculum
  • Proprietary scheduler that adapts to each child's learning pace by tracking individual fact strength rather than using fixed difficulty levels
  • Supplement designed to work alongside existing school curriculum, not replace it
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check9 no change since last check
Trust Flow (Majestic)114
Citation Flow (Majestic)2132
Referring domains (Majestic)898

6 details filled in for both companies.

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