NORTHLINE
FIELD NOTES / RETENTION
DATA READOUT 04 / 06

INSIGHT 04 / REPEAT USE

Simple tools stay in the hand.

30-day repeat use remains strongest where the task is clear and the screen stays legible.

CORE TASKS / RETURN RATE COHORT N=100 / DAY 30
Thirty-day repeat use by core task Calls 86 percent, texts 78 percent, alarm 69 percent, game 62 percent, contacts 54 percent. 30-DAY REPEAT USE SHARE OF RETURNING USERS 100 75 50 25 0 86% CALLS 78% TEXTS 69% ALARM 62% GAME 54% CONTACTS
This is the Nokia 3310 (2000) design system, applied by Curio — a design-style library for AI agents. Full Nokia 3310 (2000) guide → designbycurio.com/learn/nokia-3310-2000