Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Keystack Screenshots

iPad

iPhone

About Keystack

When it comes to making tough decisions, every additional tool helps. Keystack helps you tackle everyday dilemmas and challenges using mental models.

Mental models are tools to assist with your thinking.

With Keystack you can:

* Read and see what mental models and decision-making frameworks are being employed by some of the world's prominent leaders and thinkers.

* Access a library of over 120 + snapshots of mental models. Explore and learn useful mental models, strategies and frameworks.

* Save your favorite models.

On our Premium Plan, you will have full, exclusive access to all the podcast highlights in our collection.