WhatCable, a tiny menu bar app for inspecting USB-C cables
USB-C cables can be a mess. One cable charges at 5W, another does 100W and Thunderbolt 4, and they look identical in the drawer.WhatCable sits in your menu bar and reads the cable data your Mac already has access to. Plug in a cable and it tells you in plain English what it can actually do: charging wattage, data speed, display support, Thunderbolt, etc.Built in Swift/SwiftUI. Open source, free, no tracking.GitHub: https://github.com/darrylmorley/whatcable
FL score
out of 100
Verdict
low confidence
Competition
No competitor data yet
Trend
No signal yet
A free, open-source menu bar utility that identifies USB-C cable capabilities, solves a real micro-pain but lacks a clear monetization path.
The pain
The gap
Build angle
Strengths
- Solves a genuine, specific pain point for Mac users
- Low technical barrier, leverages existing OS APIs
- Open source builds credibility and community
- Minimal friction to adoption (free, no tracking)
- Founder has shipping track record (GitHub presence)
Risks
- Extremely narrow TAM, only Mac users with USB-C cable confusion
- No obvious monetization without feeling exploitative
- One-time utility with low repeat engagement
- Platform dependency, tied to macOS API stability
- Competitive threat from OS-level improvements (Apple could add this natively)
- Free + open-source model makes venture scaling difficult
Fly Labs Method
Is the pain real, is there a gap, is it the right time, can one person build it.
Value Equation
Dream outcome and how likely it feels, against the time and effort it costs.
One-Person Business
Curiosity pull, identity fit, and a path from free value to paid for a solo creator.
Viral Frameworks
Hook strength, shareability, and how cheaply it can be tested.
Builder Lens
Evidence the problem exists, timing, defensibility, and a model that fits on a napkin.
Five lenses, one composite. How scoring works
The angle
No market research recorded for this idea yet.
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