COMING DECEMBER 2026
Examiner: Part 107
Practice for the FAA Remote Pilot knowledge test, with every answer cited to the rule or handbook page.
About Part 107Apps / Examiner
Exam prep that shows its sources.
Examiner apps help you pass professional certification exams by understanding the material, not memorizing a question bank. Every answer is checked against the official source, and the app shows you the passage.
COMING JANUARY 2027
Examiner: EPA 608
Practice for EPA Section 608 certification, built for the new question bank starting January 2027.
About EPA 608How it works
- 1
Take the free diagnostic.
About 20 questions across every section of the exam. You get a score per section, so you see exactly where you're weak.
- 2
Unlock the full app once.
One purchase covers everything. No subscription, no extra packs.
- 3
Study three ways.
Practice one question at a time, quiz yourself on a set, or sit a full timed mock exam under real conditions.
- 4
Know when you're ready.
Each section shows its readiness, and it only reaches 'ready' when you've answered most of its questions correctly more than once.
What's inside
Practice
Pick a section. Choose an answer, then tap Check. You can change your mind before you commit.
Quiz
A short set from the sections you pick. No hints until the end, then a full review.
Mock exam
The real format: same number of questions, same time limit, same pass mark.
Source passage
After every answer, the exact passage it comes from, with the document name and page.
Every choice explained
A short plain-English note on why each answer is right or wrong.
Spaced review
Questions you miss come back soon; ones you know come back less often.
Bookmarks
Flag any question and study your flagged set later.
Figure viewer
Questions that use an official test figure open it full screen with pinch-to-zoom.
Exam vs. current rules
Where the exam expects one answer and today's rules say another, the question tells you both.
Private and offline
No account, no tracking, no internet needed. Your progress stays on your phone.
Where the questions come from
Every question is written from official, public sources: federal regulations, government handbooks and the published exam standards. Each one is tagged to the exam's official outline so coverage matches the real test, and checked so the correct answer is supported word for word by the passage it cites. A [practitioner] reviews each exam's questions before release. We don't copy questions from the real exam or from other apps.
Free diagnostic. Then one purchase of $14.99 per exam. No subscription. iPhone and Android.
Get notifiedQuestions
Are these the real exam questions?
No. The official question banks aren't public. Our questions are original, written from the same official sources the exam is based on, and they follow the exam's official outline.
Do I need an account or internet?
No. Everything works offline and nothing leaves your phone.
What if I find a wrong answer?
Every question shows a short ID. Email it to support@rubberducklabs.io and we'll check it against the source and fix it in the next update.
Is this a subscription?
No. One purchase per exam app, and updates are included.