GregMat alternative
A cheaper, source-cited alternative to GregMat
GregMat is a well-known, affordable GRE option built around live sessions and Greg's videos. If you want something cheaper, fully cited, and stronger on the GRE subject tests — with study pages you can read free — here is an honest side-by-side.
The honest part
Where GregMat is stronger
We're not going to pretend GregMat is bad — it isn't. If these matter most to you, it may be the better pick.
- Ten-plus live sessions a week plus a large recorded archive
- Greg's own video explanations and a big, active community
- A long, well-reviewed track record as a low-cost GRE option
Stay with GregMat if live weekly sessions and a large video library are what keep you studying.
Keiko vs GregMat, side by side
Where the two differ. Every value is checked against each provider's own site.
| Keiko | GregMat | |
|---|---|---|
| Price per month | €8.99≈ $9.70 | $11.99 |
| Practice questions | ||
| AI study tutor | ||
| Every claim cited to its source | ||
| Confidence-vs-accuracy calibration | ||
| GRE Physics, Math & Psychology subject tests | ||
| Free study planner built from your exam date | ||
| Read every study page free, no account | ||
| Test-day pass — pay only through your exam |
A check means the provider offers that feature. Prices are each provider's current standard (non-promotional) price, checked 7 August 2026. GregMat leads on some things this table doesn't score — see “where GregMat is stronger” above. This highlights where Keiko is different, not a full feature-by-feature match.
Why people choose Keiko
What you get by switching
€8.99 a month
Keiko is €8.99/mo — less than GregMat at $11.99. Same honest access, lower price.
Every fact cites its source
Exam facts and formulas link to the official test-maker page or a standard textbook, right next to the claim — no hand-waving.
See confidence vs. accuracy
Rate how sure you are before each answer, then see that against how often you were actually right. Calibration, not just a raw score.
GRE subject tests included
Physics, Math, and Psychology subject-test prep — coverage the big general-GRE platforms don't offer.
Free to read, no account
Every study page and tool is open without signing up. Pay only if you want saved history, mocks, and the AI tutor.
No fake proof
No invented reviews, no borrowed stats, no promised score jumps. The only numbers you see come from your own attempts.