I Built the Exact Same App in Kotlin, Nativescript and Flutter

on YouTube ↗36m

" summary

Built the same realworld.io Medium clone three ways: Kotlin native (Kotlin + XML), NativeScript (TypeScript + Vue), and Flutter (Dart). Finished apps match visually; code size and perf differ: LOC ~1,140 native (including 500 XML), 230 NativeScript, 470 Flutter + 270 generated; debug APK sizes ~3.6MB, 16MB, 42MB (release ~3.1MB, 10MB/arch, ~6–8MB). Flutter shows higher steady CPU/memory and occasional jank, but the fastest hot reload and easier pixel-accurate UI; Flutter requires codegen for JSON because no reflection. Build times ~30–50s.

AI-written summary · about

" chapters (16)

1. 0:00Introduction to frameworks
2. 3:18Developer experience comparison
3. 8:59Language similarities
4. 11:25Design patterns
5. 14:16Tooling and debugging
6. 16:26Testing frameworks
7. 17:50Data serialization
8. 19:12Data binding and storage
9. 20:36Native widget integration
10. 21:19Maintainability and upgrades
11. 23:28App size and performance benchmarks
12. 27:02Codebase size and build time
13. 28:51Time spent coding comparison
14. 29:53When to choose which framework
15. 33:05Codebase walkthrough
16. 34:55Summary and Q&A

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