faq: replace stale engine-size claim with real numbers#535
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Closes #19. The existing "less than one megabyte" figure in the code-push FAQ never matched reality — Shorebird ships its own Flutter engine build with the patching runtime included, and the actual overhead is in the 1–5 MB range depending on platform and whether you're measuring on-disk or download. Replace the claim with a table of concrete stripped sizes (Shorebird vs. stock Flutter, on-disk and download, iOS and Android) for the current Flutter 3.41.7 engine, plus a note that earlier engines were larger so the numbers get better over time.
tomarra
approved these changes
Apr 24, 2026
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Summary
Numbers
Measured via the
compare_sizestool, withgzip -9as a proxy for the DEFLATE compression used by APK/IPA:Shorebird engine
21934c19…/ Flutter engine59aa584f…(both Flutter 3.41.7, April 2026).Month-over-month sanity check against the 3.41.5-rc0 Shorebird engine (
87bc2083…, 2026-03-25): iOS dropped from 15.29 MB to 13.25 MB on-disk (~2 MB), Android stripped dropped from 14.59 MB to 13.38 MB (~1.2 MB). That's the basis for the "iOS overhead came down by roughly 2 MB in the preceding month" line.Test plan
npm run build(astro check + build) passes locallyfaq.mdxrenders with the table formatted correctly on the live preview