Amma SATprep
Digital SAT practice tests, textbooks and AI help—with explanations that teach the reasoning.
AI & Machine Learning·Productivity·Education
About
Amma SATprep helps students prepare for the digital SAT with full-length practice tests, Math and Reading and Writing textbooks, vocabulary practice, and AI help from Ask Amma. Students can highlight key information, eliminate answer choices, use graphing tools, and review explanations in one focused workspace.
The public website offers free SAT guides and worked examples without an account. Practice Test 1 is free after sign-in; additional full practice tests require paid access.
Built by James Zhang at Intallaga Tech Pty Ltd, Amma focuses on understanding mistakes and building skills through deliberate practice. Amma SATprep is independent and is not affiliated with the College Board.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
We started having problems with our flagship feature. We had compared them to Twilio and decided to go with this new startup. The reality is they couldn't scale with us.
Cheap third-party vendors that cannot scale with you become expensive emergencies
Talking Parents chose a startup video provider over Twilio to save money on their most important feature — accountable calling. When the vendor couldn't scale, their flagship product broke, forcing an emergency migration mid-growth. Vince's rule: always check whether your vendor can handle your ceiling, not just your current floor.
Step one is you have to build an audience because if you don't have an audience, you don't have anyone to sell to. Step two is you've got to set up an email list and start communicating with people at least once a week.
Build an audience and an email list before you ever pitch a pre-sale
Validation starts months earlier with audience-building. Post raw build-in-public content, ship free things of value on X, then funnel that attention into a weekly email list — the trust there is what makes a pre-sale convert when launch day comes.
There's a play for whatever you're stuck on.
Read all 2722 playbooks