The irritation
My dad and I were manually listing our starters across several fantasy leagues just to decide which Sunday broadcasts deserved a screen.
ProductReleasedReleased utility
TuneInFF
A free Sunday-morning utility that scans your fantasy starters and shows which real NFL games matter across all your leagues.
- Current state
- Released — Released utility
- Jack’s role
- Concept, API integration, Frontend engineering
- Find it in the workshop
- Broadcast & Products · Fantasy broadcast board
Built because…
The real build story.
What I built
In one day, I built a free tool that connects Sleeper or public ESPN league data, scans every starting lineup, maps those players to the week's NFL matchups, and returns a clean viewing report.
The hard part
Sleeper exposes a straightforward public API, while ESPN fantasy data is unofficial and far more awkward. The integration had to stay useful without turning the one-button flow into account setup.
Under the casing
Proof, not decoration.
Build evidence02 items
- Sleeper and ESPN lineup data mapped to the weekly NFL schedule
- A working one-day utility with its tradeoffs documented in the original post
- Sleeper API
- ESPN fantasy data
- NFL schedule data
- Web application
Scope of work
What I owned.
- Concept
- API integration
- Frontend engineering
No victory-lap math
Outcome and lesson.
Where it landed
TuneInFF is intentionally barebones: no login, dashboard, subscription, or plan to become a company—just the Sunday-morning answer I wanted for myself.
What stayed
A personal tool can be finished when it removes the repeated chore. The right scope was a button, a table, and zero operating cost.
Field notes
This project has a physical address.
In the playable workshop, TuneInFF lives in the Broadcast & Products as a fantasy broadcast board. You can inspect it without unlocking anything.