21 Days Challenge

What it does

It is estimated that it takes people 21 days to form a new habit. So it’s a perfect amount of time to change or introduce something new in your life. Choose the best challenge for you and do it for 21 days :)

• 
  21 Days Challenge2020 · 21dayschallengeapp.com · ▲3

  A set of challenges to be accomplished every day for 21 days

• 
  TwentyOne2023 · apps.apple.com · ▲108

  Build habits in manageable bites, together

• 
  21 Days Habit Tracker2023 · missdigitalplanner.gumroad.com · ▲106

  Establish the foundation of success - a one simple habit

• 
  22 Days2019 · apps.apple.com · ▲105

  Start to effectively control your habits

• 
  Law of 1002022 · ▲194

  Make or break a habit in 100 days.

• 
  100-Day Habit Tracker2023 · systemsumo.gumroad.com · ▲121

  Build long-lasting habits with the 100 day habit challenge

• 
  SimCity, but with Permits▲914

  A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.

  Life & fun · 2d ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 14d ago · tanzaniaeducationproject.org

• 
  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 15d ago · bigwords.page

• 
  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 9d ago · guitoro.com

• 
  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 13d ago · carrierexplode.com

• 
  The whole Solar System and every tracked satellite, live in the browser▲407

  Life & fun · 23d ago · space.bl2.net

• 
  Bel▲1,288

  Life & fun · 2019 · paulgraham.com

• 
  Vector Illustration Creator▲811

  Create free personalized illustrations from 3000+ elements

  Growth · 2019 · icons8.com

• 
  Open Doodles▲687

  A collection of free sketchy illustrations

  Growth · 2019 · opendoodles.com

• 
  AirPods Pro▲576

  New AirPods with active noise cancellation

  Life & fun · 2019 · apple.com

• 
  The New Ember Mugs▲568

  The next generation of temperature controlled mugs

  Life & fun · 2019 · ember.com

• 
  Lazy IoT▲533

  Control your environment with one easy keyboard shortcut

  Work · 2019 · lazy-app.com