iPhone and Android app
The Rafter Tie app for iPhone and Android, built around your study buddy
Your study buddy brings tutor walkthroughs, my study plan and weak-spot quiz to your phone. Rafter Tie already works in your phone's browser today, including the free 10-question check.
- Tutor walkthroughsStep-by-step help on any question you answered, at your pace.
- My study planA day-by-day plan built from your weakest domains.
- Weak-spot quizQuiz yourself on what you missed, with spaced review so it sticks.
- Mistake patternsSee what keeps tripping you up, and what to fix first.
- Exam-day coachPlan your last week and walk in ready.
- Explain this resultStep-by-step reasoning under our free calculators.
- Ask why on practice testsFinish a practice test, then ask why on any answer.
- My notesKeep your own notes next to your course.
Plumb is AI. Check important details against your references.
The ICC B1 and ICC B2 and ICC R3 course works in your phone's browser today
The ICC B1 course
Available now · instant accessThe ICC B1 course
- 7modules of lessonsEvery task on the outline
- 4full-length timed exams60 questions in 120 minutes each
- 426practice questionsEach one explained
- 4worked calculationsStep by step
- 8timed code lookups a setFind it fast in IRC, with your median time
- 1week-by-week study planSet to your exam date
Turn a practice answer into a study step. In untimed practice, ask Plumb AI about any question you answer, follow up, then see your weakest topics and what to drill next.
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Every answer comes with a full explanation.
The ICC B2 course
Available now · instant accessThe ICC B2 course
- 8modules of lessonsEvery task on the outline
- 3full-length timed exams80 questions in 210 minutes each
- 298practice questionsEach one explained
- 1week-by-week study planSet to your exam date
Turn a practice answer into a study step. In untimed practice, ask Plumb AI about any question you answer, follow up, then see your weakest topics and what to drill next.
Every answer comes with a full explanation.
The ICC R3 course
Available now · instant accessThe ICC R3 course
- 8modules of lessonsEvery task on the outline
- 3full-length timed exams60 questions in 120 minutes each
- 300practice questionsEach one explained
- 1week-by-week study planSet to your exam date
Turn a practice answer into a study step. In untimed practice, ask Plumb AI about any question you answer, follow up, then see your weakest topics and what to drill next.
Every answer comes with a full explanation.
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A first look at the app
What works on your phone now
Add Rafter Tie to your home screen
It then opens from an icon on your phone. The free check and the course install from the browser the same way.