At its core, StemType Master is a switch database — but the depth goes well beyond what you'd find in a community spreadsheet. Each switch profile includes actuation force, total travel, stem and housing materials, factory lube status, sound descriptions, feel radar charts, and pairing recommendations for lubes, plates, and keycaps. The detail on something like the Outemu Sky V3 — POM stem, PC top housing, nylon bottom, gold-plated spring, 45g actuation, 62g bottom-out — illustrates how seriously the app treats its reference function.
Comparison and Build Tools
The side-by-side comparison tool lets you stack up to three switches at once, with color-coded specs and overlaid radar charts. The Build section goes further: choose your layout, switches, keycap profile, plate material, stabilizers, and mods, and the app analyzes the combination to surface specific tips — like how FR4 plate affects the sound character of Boba U4T switches, or how MT3 keycaps interact with tactile feedback. These aren't generic suggestions; they're build-specific observations.
Guides and the Quiz
- Beginner guides cover switch types, keyboard sizes from 60% to full, and hot-swap vs. soldered builds — each with an estimated reading time (most run 3–4 minutes)
- Modding guides walk through lubing, filming, spring swapping, tape mods, and stabilizer tuning step by step
- The Switch Quiz tests identification skills across three difficulty levels: Easy uses feel charts, type badges, specs, and sound tags; Medium strips it down to feel chart and specs; Hard gives only sound description and actuation force
Each quiz round runs 10 questions with four choices each — a low-commitment way to sharpen your knowledge of the broader switch landscape.
Design and a Few Caveats
The interface runs dark, with electric blue and cyan accents, glowing outlines on interactive elements, and prominent lightning bolt graphics throughout. It's visually energetic — almost deliberately so, with decorative fruit symbols and golden coins on the home screen giving it a slot-machine energy that feels more arcade than reference tool. That aesthetic is committed and cohesive, though accessibility notes flag that the dense background graphics and lightning effects could cause readability issues in certain areas, and color-coded switch types currently lack alternative visual indicators for users with color vision deficiencies.
The decorative layer occasionally competes with the data — users who just want to look up a spring weight fast may find the visual noise more costume than context.
The app is free with no stated plans to change that, and it functions fully without an internet connection.