Framework
Business

Hooked Model

Trigger, action, reward, investment

Best for
designing habit-forming products
Time
1–2 hr
Difficulty
Intermediate

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Hooked Model diagramSchematic of the Hooked Model framework: Trigger, action, reward, investment.TRIACTREWINVTriggerActionRewardInvestment
The Hooked Model diagram — Trigger, action, reward, investment.
Example

Designing a habit-forming loop in a daily journaling app

Trigger
  • Internal: post-work decompression
  • External: 9pm reminder
Action
  • One-tap entry from lock screen
  • Voice-to-text in 10 seconds
Reward
  • Streak preserved
  • Surfacing a memory from a year ago
Investment
  • Tagging + searching past entries
  • Custom prompts collection

Related frameworks

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Pirate Metrics (AARRR)

Acquisition, Activation, Retention, Referral, Revenue

Business

Build–Measure–Learn

Lean Startup feedback loop

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Flywheel

Self-reinforcing loop of growth

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