How It Works

Behind the magic (…proven methods backed by leading behavioural scientists)

The Snitch Key

Users link chosen distracting apps to a timer and control access with a physical key. Tap out to unlock, tap back in to regain control.

The Snitch key uses pattern interrupt to build mindful screen habits, while increasing perceived value and overall effectiveness.

Shared Pot of Time

Users create groups with friends and set shared screen-time limits. We nudge them to gradually reduce usage over time, encouraging long-term behaviour change rather than drastic cuts.

Peer support, inspired by AA’s sponsorship model, enhances self-control and engagement.

Messaging + Justification

Snitch’s built-in messaging lets users justify their actions, engage in playful banter, whilst nudging each other toward real behaviour change.

Playful banter keeps users engaged, while justification prompts introduce intentional friction.

Rewards

Snitch incentivises progress by offering real-world rewards for meeting screen time goals, encouraging users to reclaim their time meaningfully.


Snitch keeps users committed through positive reinforcement, fulfilling psychological needs like competence and gratification. Rewards and free perks boost engagement, while creating partnerships that lower customer acquisition costs.

Our MVP

The Snitch MVP was developed through multiple iterations using Apple Shortcuts and 3D printed NFC keys. Through four trial studies, we have gathered qualitative insights and A/B tested specific features, leading to their validation.

Tested features include a physical key, friend notifications, justification prompts, and a shared pot of time.


Study No.3 provided the user insights and data used in our validation section and Study No.4 is currently ongoing.

The Snitch MVP was developed through multiple iterations using Apple Shortcuts and 3D printed NFC keys. Through four trial studies, we have gathered qualitative insights and A/B tested specific features, leading to their validation.

Tested features include a physical key, friend notifications, justification prompts, and a shared pot of time.


Study No.3 provided the user insights and data used in our validation section and Study No.4 is currently ongoing.

  • Version 1

    Trial No.1
    Messaging – 4 testers

    Automations notified friends when users opened distracting apps, reducing screen time and increasing awareness. However, after two weeks, the effect faded as shame diminished, making testers less responsive and screen time rebounded.


  • Version 2

    Trial No.2
    Physical Device – 12 testers

    Building on the messaging approach, testers used a physical key to lock problematic apps, with notifications alerting friends when apps were locked or unlocked. This social element encouraged intentional phone use, but reactions varied. While some found the pressure motivating, others didn’t connect with the device and eventually stopped using it.

  • Version 3

    Trial No.3
    Shared Pot of Time – 18 testers

    This version introduced a shared time pot for problem apps, boosting group interaction and awareness. Playful shaming and justification reinforced accountability, with the physical device available for those who wanted to lock their apps. Since its use wasn’t necessary, some testers eventually forgot about it.

Ongoing study

Ongoing study

Trial No.4
Linking the Device to the Shared Pot – 4 Users

In this version, the physical device is fully integrated into the shared pot system so that any time spent with the device unlocked directly reduces the shared time. This means that every moment your problem apps are accessible drains the shared pot, making it clear that unintentional phone use comes with a tangible cost. Testers found that this close link made their use of problem apps incredibly intentional.