DelGuard Lead Break Tracker — a lead-management buddy for mechanical pencil use…

Help mechanical pencil users log lead usage and breakage causes so they stop wasting leads and rebuying bad models

Problem

An HN writer admitted buying the same mechanical pencil twice because they couldn't believe it was actually bad. They used one cheap pencil for years, and their only real complaint was that lead breaks easily once it sticks out. Most people have zero data about their long-used stationery, so they repeat mistakes and waste lead.

Solution

A lightweight logging tool: pick your pencil model, lead size (0.5 / 0.7), and hardness, then one-tap log every break or refill. The app suggests likely causes (too much lead exposed, high writing angle, pencil-lead mismatch) and shows breakage frequency by combination. It's a pencil journal for stationery nerds, not a general note-taking app.

Users

Mechanical pencil and stationery enthusiasts, students and engineers who take longhand notes, and stationery review bloggers

MVP

Built-in pencil and lead model library; one-tap break / refill logging; breakage frequency by model; simple usage suggestions; local storage with no account

Revenue

Free basic tier plus paid advanced stats and export; affiliate links to stationery retailers; one-time purchase to remove ads

Why now

Stationery and handwriting efficiency have steady niche communities, and a local mobile app with simple logging is a very low-cost weekend build with personal-brand potential