Devin Entmacher · Product manager · Lifecycle marketer

Ex-Tinder PM. Lifecycle at Equip. Product builder after hours.

At Tinder, I built reasons to open the app right now. At Equip, I shape the patient lifecycle. After hours, I make things I want to exist, like Knife Fight.

Knife Fight case study →The lifecycle journey
Knife FightWeb + iOS 2.2 · October 2026
Knife Fight on iOS with scored and projected points, cut status, and game time remaining

Featured work

Product · lifecycle · brand · growth

The lowest score gets cut. Everything else follows.

Knife Fight is last-team-standing fantasy football. No weekly matchups. Every team shares one scoreboard, the lowest score gets cut, and the fallen roster floods waivers.

Live on the web · iOS 2.2 on the App Store

01

Waivers are the game

Every cut puts a full roster on waivers. Highest eligible bid leads, with backup drops, linked alternatives, and private explanations for each result.

02

Make the stakes readable

Cut Line separates projected safety from scored points, shows game time remaining, and changes its outlook when the data falls behind.

03

Let product state run lifecycle

Draft clocks, lineup issues, cuts, and trades trigger the message. Email, SMS, and push lead back to the action. Stale alerts retire before delivery.

Armory with money-first bids, available FAAB, and the next waiver run
Armory: a price, a drop plan, a next run
My Team with player photos, game context, and lineup controls
My Team: the roster and the next action
Native Standings comparing surviving teams by remaining FAAB
Standings: the field and its remaining budget

Blind-bid and snake drafts. Best Ball. League-scored rankings. Public and private leagues. Simulation seasons against bots. A shared pink brand across web, iOS, and email.

Read the Knife Fight case study →

More work

Draft companion · macOS

Pick 42

Local-first draft advice for MTG Arena: transparent pick rankings, 40-card builds, and evidence-first game reviews. Free to download.

See Pick 42 →Tinder · Product + lifecycle

Live products for right now.

Vibes, Swipe Surge, targeted Boost campaigns, and the emails that made it into the wild.

See the Tinder work →Web design · brand systems

Three websites. One family.

A college, clinic, and foundation rebuilt around one shared system and three clear jobs.

See the websites →Company

Leeloo Labs

The one-person company and App Store publisher behind Knife Fight.

Why it exists →