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Keiko is GRE and GMAT prep built on one rule: every fact links to its source. Free study pages and tools with no signup, confidence-vs-accuracy analytics, GRE subject-test prep, and an optional AI tutor for €8.99/mo. No fake reviews, no promised score jumps.
I built Keiko because test-prep marketing drove me a little crazy with fake "students", borrowed stats, and "raise your score by X!" promises no one can back up. So Keiko has one rule: every exam fact and formula links to its source (the official ETS/GMAC page or a standard textbook), right next to the claim. If a page is still being reviewed, it says so.
A few things that make it different:
- Free to actually use. Every study page and tool works with no account. You only pay if you want saved history, mocks, and the AI tutor starting at €8.99/mo.
- Confidence vs. accuracy. You rate how sure you are before each answer, then see that against how often you were right. It's a mirror, not a score prediction.
- GRE subject tests (Physics/Math/Psychology): coverage the big platforms skip.
- No fake proof. No invented reviews, no promised score jumps. The only numbers you see come from your own attempts.
It's early and I'd genuinely love feedback, especially on what's missing or unclear. Happy to answer anything about how the sourcing, calibration, or pricing works. Thanks for taking a look 🙏
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About Keiko Study on Product Hunt
“Source-cited GRE & GMAT prep”
Keiko Study was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #160 on the daily leaderboard. Keiko is GRE and GMAT prep built on one rule: every fact links to its source. Free study pages and tools with no signup, confidence-vs-accuracy analytics, GRE subject-test prep, and an optional AI tutor for €8.99/mo. No fake reviews, no promised score jumps.
Keiko Study was featured in Productivity (658.2k followers), Education (79k followers), GitHub (41.4k followers) and Online Learning (3.6k followers) on Product Hunt. Together, these topics include over 215.9k products, making this a competitive space to launch in.
Who hunted Keiko Study?
Keiko Study was hunted by Felix Laga. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Felix Laga
Hi Product Hunt 👋 I'm the maker of Keiko Study.
I built Keiko because test-prep marketing drove me a little crazy with fake "students", borrowed stats, and "raise your score by X!" promises no one can back up. So Keiko has one rule: every exam fact and formula links to its source (the official ETS/GMAC page or a standard textbook), right next to the claim. If a page is still being reviewed, it says so.
A few things that make it different:
- Free to actually use. Every study page and tool works with no account. You only pay if you want saved history, mocks, and the AI tutor starting at €8.99/mo.
- Confidence vs. accuracy. You rate how sure you are before each answer, then see that against how often you were right. It's a mirror, not a score prediction.
- GRE subject tests (Physics/Math/Psychology): coverage the big platforms skip.
- No fake proof. No invented reviews, no promised score jumps. The only numbers you see come from your own attempts.
It's early and I'd genuinely love feedback, especially on what's missing or unclear. Happy to answer anything about how the sourcing, calibration, or pricing works. Thanks for taking a look 🙏