Pass your Google Cloud certification, one question at a time.
Practice questions with an explanation for every option, timed mock exams weighted like the real thing, and a study loop that makes you want to come back tomorrow.
No credit card. Sign in with Google, GitHub or email.
Certifications
Pick your exam
Professional Data Engineer
BigQuery, Dataflow, Pub/Sub, Dataproc, storage design, security and ML pipelines.
✓ Updated Apr 30, 2026
Start practicing → PCAProfessional Cloud Architect
Solution design, reliability, security and migrations, including the official case studies.
✓ Updated Aug 17, 2026
Start practicing →More certifications
New exams are added behind the same engine. Tell us which one you are preparing next.
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Everything you need, nothing you don't
Study blocks
Work through the whole bank in fixed rounds. Repeat a block until it is mastered and pick up exactly where you left off.
Realistic mock exams
Timed exams with the question count, duration and domain weighting of the real test, with a pass line to beat.
Every option explained
Learn why the right answer is right and why each distractor is wrong, not just which letter to pick.
Target your weak spots
Per-domain accuracy shows where you stand. Load your weakest topics or your mistakes into a session in one tap.
A reason to come back
XP, ranks, streaks, a daily challenge and the occasional boss battle keep the habit going. Every reward can be skipped.
Synced everywhere
Start on your laptop, finish a block on your phone. Your progress is saved to your account as you go.
Learn the why
Feedback that teaches
Answer, then see the reasoning behind the correct option and a rationale for each of the others. Bookmark the tricky ones and they come back in your review.
- Instant feedback in practice, exam conditions in mocks
- Multiple-answer questions handled like the real exam
- Keyboard shortcuts for fast drilling on desktop
- A question bank kept current, with the update date on every exam
How it works
From zero to exam-ready
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1
Try it
Answer 20 questions without an account to see if it clicks.
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2
Create your account
Sign in with Google, GitHub or email. Your trial progress comes with you.
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3
Study a little every day
Blocks to cover the bank, mocks to check you are ready, reviews for mistakes.
Pricing
Simple pricing. Free during the beta.
Everything is free while DataForge is in beta. Join the early-bird list to lock in 40% off for life when paid plans launch.
Free
$0
No credit card
- 20 questions per certification
- Progress synced across devices
- Daily challenge and streaks
Exam Pass
$39 one-time
90 days · one certification
- Every question for your exam
- Unlimited timed mock exams
- Explanations for every option
- Updates included while your pass is active
Pro
$24 / month
or $179 / year (save 38%)
- Every certification, new ones included
- Everything in Exam Pass
- Cancel anytime
Teams
$19 / seat / month
Billed annually · 5+ seats
- Pro for everyone on the team
- Team progress dashboard
- Invites and a single invoice
Prices in USD. Taxes may apply.
FAQ
Questions
Is DataForge free?
Yes, everything is free while the app is in beta. Paid plans will follow (see pricing). Join the early-bird list and you keep 40% off for life.
How up to date are the questions?
The question bank is reviewed and refreshed as the exams change. The Professional Data Engineer bank was last updated on Apr 30, 2026 and the Professional Cloud Architect bank on Aug 17, 2026. The app shows the date on every exam, and questions that no longer match the current exam are flagged as outdated.
Do I need an account?
You can try 20 questions per certification without one. An account unlocks the full question bank and saves your progress across devices.
Does it work on my phone?
Yes. Open it in your mobile browser and use “Add to Home Screen” to launch it like an app. A native app is on the roadmap.
Is DataForge affiliated with Google?
No. DataForge is an independent study tool and is not affiliated with, sponsored by or endorsed by Google LLC.
I found a mistake in a question. What do I do?
Email carleondel@gmail.com with the question and what looks wrong. Corrections ship quickly.