whoami
android engineer · delhi, india

Angad Singh

I build Android apps that feel obvious in retrospect.
role
Staff Engineer (Android) @ Round Circle
stack
Kotlin Compose Coroutines MVI/MVVM
writing
Android, Self Hosting, Life
location
Delhi, India (GMT+5:30)
press g then b for blog
[01]writing·all posts →
2026-07-25
Every Cover Has a Night Side
This site has a light and a dark theme, and the cover image cross-fades between them — so every illustrated cover needs a genuine night twin. Faking one by dimming the day image is easy and looks wrong. Here's how the covers get generated, and the three gates — two of them running on a GPU — that prove a dark cover is a real re-light and not a graded fake.
12 min
2026-07-16
I Was Measuring the Wrong Weights
Two weeks ago I said the DGX Spark's bandwidth wall was physics, not a driver update — fast or big, pick one. Then I ran a 122B model on the same box at six times the speed of a 70B. The law was right. The number I kept feeding it wasn't.
13 min
2026-07-04
I Bought the GPU Anyway
I bought Andromeda, a DGX Spark, to fine-tune models — but first I owed my last post a rematch. I re-ran the same local/free/paid LLM inference benchmark on 120 GB of Grace-Blackwell instead of a CPU NUC. It fixes the one thing the NUC got fatally wrong, hits a bandwidth ceiling I didn't see coming, and makes clear why the real reason I bought it isn't inference at all.
9 min
2026-06-27
Reading Android Bench: scores, cost, and the efficiency trap
Google's Android Bench scores LLMs on real Android engineering tasks. A look at what the June 2026 leaderboard actually says — why the top is a statistical tie, where the real cost-efficiency winners are, and the trap hiding in the cost and latency columns.
7 min
[02]projects·all projects →
./android-filepicker
Selecting directories and files made a lot easier.
★ 662 · Java
./android-toggle
Custom switches for Android.
★ 396 · Java
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