iPhone and Android app

The Long Seam 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. Long Seam already works in your phone's browser today, including the free 10-question check.

Patch AIyour Long Seam study buddy
  • 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.

Patch is AI. Check important details against your references.

The API 510 and API 570 and API 510 recert and API 653 and API 571 course works in your phone's browser today

The API 510 course

Available now · instant access

The API 510 course

  • 8modules of lessonsEvery task on the outline
  • 2full-length timed exams170 questions in 390 minutes each
  • 617practice questionsEach one explained
  • 6worked calculationsStep by step
  • 1week-by-week study planSet to your exam date

Turn a practice answer into a study step. In untimed practice, ask Patch AI about any question you answer, follow up, then see your weakest topics and what to drill next.

API 510 course$199

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

See the plans

Compare plans

Every answer comes with a full explanation.

The API 570 course

Available now · instant access

The API 570 course

  • 8modules of lessonsEvery task on the outline
  • 2full-length timed exams170 questions in 390 minutes each
  • 660practice questionsEach one explained
  • 6worked calculationsStep by step
  • 1week-by-week study planSet to your exam date

Turn a practice answer into a study step. In untimed practice, ask Patch AI about any question you answer, follow up, then see your weakest topics and what to drill next.

API 570 course$199

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

See the plans

Compare plans

Every answer comes with a full explanation.

The API 510 recert course

Available now · instant access

The API 510 recert course

  • 2full-length timed exams25 questions in 240 minutes each
  • 174practice questionsEach one explained

Turn a practice answer into a study step. In untimed practice, ask Patch AI about any question you answer, follow up, then see your weakest topics and what to drill next.

API 510 recert practice pack$59

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

See the plans

Compare plans

Every answer comes with a full explanation.

The API 653 course

Available now · instant access

The API 653 course

  • 8modules of lessonsEvery task on the outline
  • 2full-length timed exams170 questions in 390 minutes each
  • 347practice questionsEach one explained
  • 12worked calculationsStep by step
  • 26code-navigation drillsFind it fast in API 653
  • 1week-by-week study planSet to your exam date

Turn a practice answer into a study step. In untimed practice, ask Patch AI about any question you answer, follow up, then see your weakest topics and what to drill next.

API 653 course$199

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

See the plans

Compare plans

Every answer comes with a full explanation.

The API 571 course

Available now · instant access

The API 571 course

  • 6modules of lessonsEvery task on the outline
  • 2full-length timed exams110 questions in 195 minutes each
  • 249practice questionsEach one explained
  • 1week-by-week study planSet to your exam date

Turn a practice answer into a study step. In untimed practice, ask Patch AI about any question you answer, follow up, then see your weakest topics and what to drill next.

API 571 course$149

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

See the plans

Compare plans

Every answer comes with a full explanation.

Want the native app too? Get notified

Get notified when it's ready

A quick confirmation now, then one email when it's ready.

A first look at the app

Where you stand, every dayDays to your exam and your score in each domain, with today's set aimed at the weakest.
Practice anywhereQuick sets of original questions, each answer explained.
Your plan in your pocketThis week's study and timed exam, in order.

What works on your phone now

Free 10-question checkTake the free check on any phone. If you stop partway, it picks up where you left off on the same phone.
Your courseOpen it from the link in your receipt email, on your phone or a computer. There's no password to remember.
Free toolsEvery free calculator and tool here works in a phone browser, so you can check a number on the job.

Add Long Seam 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.

iPhoneOpen longseam.com in Safari, tap the Share button, then tap Add to Home Screen.
AndroidOpen longseam.com in Chrome, tap the ⋮ menu, then tap Add to Home screen.