Engineering
How We Added E2E Encryption on Top of a Local-First Architecture
How we combined local-first architecture, SQLite, PowerSync, and E2E encryption in the Finsight finance app.
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Zentline ecosystem
Product notes for building calm, useful SaaS
Articles about architecture, product decisions, operations, and the systems behind Zentline products.
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How We Added E2E Encryption on Top of a Local-First Architecture
How we combined local-first architecture, SQLite, PowerSync, and E2E encryption in the Finsight finance app.
7 min read
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Engineering
Why your app feels slow and how we fixed it with PowerSync
How we moved away from request-wait-response screens, shifted routine reads to local SQLite, and improved perceived speed with PowerSync.
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Product
The SaaS metrics that matter before scale
A short guide to product metrics that help small SaaS teams understand retention, activation, support load, and real usage.
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