Shiftary Android shift planner adopts offline-first pricing with trial, lifetime and subscription options

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Shiftary, a Flutter-built shift planner for Android that works offline without accounts, has been monetized without relying on a backend server in the purchase flow. Its model includes a 14-day free trial of all features requiring no card, a one-time $19.99 Lifetime purchase, and a $9.99 yearly Cloud subscription adding backup and sync. A discounted $9.99 Lifetime upgrade is offered only to Cloud subscribers. The developer describes storing the trial start date locally and within user data, always keeping the earliest date, and using Google Play as the source of truth for ownership via the in_app_purchase plugin. The article also highlights Play's three-day acknowledgment requirement for purchases and how renewal order IDs can be used to estimate subscription periods.

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ProgrammingDEV Community ·

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