Fastdiet builds an intermittent fasting routine around your schedule instead of a rigid diet, and this tweak clears the subscription wall so every plan is open from the start. Download the Fastdiet IPA for iPhone and pick a fasting window that fits your life, from gentle 13-11 cycles to full 24-, 36- or 48-hour fasts.

Rather than telling you what to eat, Fastdiet tracks when you eat — cycling fasting and eating windows to help your body burn stored fat and reset between meals. The app also covers the 5+2 weekly plan, blood sugar and ketosis monitoring, weight and BMI tracking, water intake reminders and Apple Health step syncing.

What the tweak unlocks

Full subscription unlocked — every fasting plan open
13-11 through 48-hour and custom fasting schedules
5+2 weekly plan with calorie guidance
Blood sugar, glycogen and ketosis monitoring
Weight, BMI and water intake tracking with Apple Health sync

Get the Fastdiet tweak on builds.io — download the IPA and install it on your iPhone in one tap, no PC.