Delta4 ranks every task on your list by real business impact — not urgency, not deadlines, not gut feeling.
Free to use. No account needed. No credit card.
Sunsama sells ritual. Akiflow sells speed. Trevor AI sells automation. None of them answer the only question that matters: "Am I working on the right things?"
Most solopreneurs spend most of their day on tasks that feel urgent but create zero lasting business value.
The average solopreneur tries over 10 productivity tools — all organize tasks, none prioritize by impact.
Existing tools let you check boxes. None measure whether those boxes moved your business forward.
Add everything on your plate. Revenue, admin, creative work, networking — all unfiltered.
Rate each task's short-term payoff and long-term compounding value. The algorithm ranks them by impact.
Do the highest-delta tasks first. Watch your daily impact score climb. Over weeks, your trajectory shifts.
Kunal Shah's Delta 4 theory: when a product creates a 4x efficiency improvement, users never go back to the old way.
Delta4 applies this to your daily work. Instead of asking "is this important?" it asks: "How much does this compound my business?"
Tasks scoring Δ4+ are the ones that create permanent progress. Everything below that is noise you can defer or delegate.
When your daily actions create a Delta of 4+, you've created irreversible progress.
Start free, upgrade when Delta4 becomes the first thing you open every morning.
Delta4 exists for the solopreneur who's done confusing motion with progress. The one who wants every hour to compound into something real.
Get Delta4 Pro — 14 Days Free →Delta4 is for the solopreneur who's done confusing motion with progress. Start ranking your tasks by what actually compounds.
Get Started — 5-Minute Setup →No account needed. Your data stays in your browser.