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Web, Android or both: where to launch a learning app
What the web and a phone are each good at for a learning product, when to start with one, and how to keep accounts and progress in step across both.
Introducing CertBrain: exam prep where every question has a source
CertBrain is our new study site for the AWS Certified AI Practitioner exam. Here's how a third product launched on the same platform, and why we treated the content as the hard part.
One codebase, several products
How we turned a flashcard app into a platform that launches focused learning sites, without forking the code or maintaining two apps.
Adding AI features without surprise bills
Quotas, cheap models for small jobs, and features that fail quietly. The patterns we use to put AI into apps with predictable costs.