PlannerShift – One-tap Schedule Reshuffle

A calendar that shifts all later tasks when you fall 30 minutes behind.

Problem

People who schedule their day hour-by-hour get wrecked by traffic, overruns, or cancellations, and every existing calendar app only lets you drag one event at a time. There is no concept of shifting the entire rest of the day after one change.

Solution

A mobile-first planner with drag, handles, and swap gestures, plus a single action to shift, pull in, or insert before a task that batch-moves every following event. Show a before/after preview so users trust the change.

Users

Heavy calendar users, parents juggling pickups and activities, remote workers with back-to-back meetings.

MVP

Gesture-based drag and resize; one-tap shift/pull-in/insert that batch-moves later tasks; conflict detection and undo; two-way sync with system calendar; before/after diff view.

Revenue

Free core with subscription for cross-device sync, unlimited auto-reshuffle, and themes; offer a one-time lifetime unlock for subscription-averse users.

Why now

AI scheduling is hot, but the real gap is a simple, reliable local reshuffle UX. A solo dev can ship a working loop on top of system calendar APIs in weeks.