YouTube needed a pre-watch filter.
A local attention ROI layer that helps decide whether a video deserves deep focus, a scan, background listening, or a skip.
Practical tools from lived friction · kiskir.dev
KISKIR
I build apps when my own workflow starts to hurt. No imagined market pain, no fake personas, no software ceremony for its own sake. Just a real problem, a narrow tool, and a cleaner way to keep moving.
keep it simple,
keep it real
Builder thesis
The best starting point is a problem I already have.
YouTube is where I learn, relax, research, and follow curiosity. KoalaTube asks whether the next click is worth the attention before it becomes an hour. Some videos still need an exoskeleton while I watch. The whole day needs a second layer after I sleep: a searchable LLM Wiki record of what I watched, what each video said, and which notes deserve another pass in Obsidian. An apartment renovation had a similar shape: I needed one good scan to design from, not a monthly subscription for a tool I would use once. LoopCam came from the gym, where a single interruption can make me lose the rep count, the set count, and the rhythm of the workout.
YouTube needed an exoskeleton.
A layer around videos that helps me understand, review, and keep the knowledge without breaking the watch flow.
Watch history needed to become a wiki.
Every midnight, yesterday's videos become a daily Markdown trail: titles, scripts, outlines, Jingdu notes, and explicit gaps.
Apartment scanning needed to be disposable.
Open the phone, scan the space, export the file, and walk away. No login. No ads. No recurring fee for a once-in-a-while job.
Workout counting needed to leave my hands alone.
If the phone is already on a tripod, it should count the reps, keep the set visible, and record the screen when I want a record.
Problem-Built Tools
Each project starts as a sharp annoyance in my own life, then gets shaped into a focused utility with clear boundaries.
Operating Principles
The projects are different on the surface, but they follow the same small-tool discipline underneath.
Plain Tool Boundaries
The website keeps project promises grounded: what the tools do, where the boundaries are, and how terms and privacy apply to this public surface.