Challenge Contract

Challenge Contract is a free web app for monthly self-challenges such as Dry January, Sober October, a No Spend Month, 75 Soft, a No Sugar Challenge, 30 days of fitness or a challenge you design yourself. No account, no download: everything stays in your browser.

How it works: pick a challenge, choose three to six daily rules you can answer with a yes or a no, set your dates and sign a one-page contract with yourself. Then keep it where you will see it. You can print the contract together with a month calendar that has a checkbox for every rule on every day, save the contract as an image, or save a phone lock-screen wallpaper that lists your rules. The daily tracker turns your rules into a checklist, counts your streak and perfect days, and reminds you of the never-miss-twice rule after a slip.

The Dry January guides cover the dates for 2027, practical tips for social events and a money-saved calculator, and the benefits page summarizes published research with links to every source. The site is free and supported by ads.