Creatine Tank: Daily Tracker

Log creatine in two taps and watch the tank fill. See your estimated saturation and days to full. No more wondering if one missed day undid it all. One-time purchase.

Creatine Tank turns your creatine habit into something you can see: a tank that fills up as you keep going.

You take it every day, but you never really know how full you are. You skip one day and wonder if you've undone everything. Creatine Tank answers both with one number and one picture.

■ One or two taps to log

Tap 5g, tap Log it. No number keyboard, ever. Save the products you use and pick them with a single tap. Took it a while ago? "30 min ago" and "1 hr ago" are right there.

■ See your estimated saturation as a tank

From your logged intake, body weight, diet and the days since you started, Creatine Tank estimates how full your creatine stores are and shows it as a tank from 0 to 100%. The liquid rises a little every time you log.

• Six phases: Starting, Building, Near Full, Saturated, Maintenance, Paused
• "Estimated time to full" tells you what's ahead
• Missing one day barely moves the needle. Take a break and it comes back gradually

■ Look back on what you've built

The calendar shows at a glance which days you hit your goal, which were partial, and which you missed. Analysis charts your saturation trend and the breakdown of what you took.

■ Intake plans

Switch between Standard, Loading and Maintenance and the suggested amount adjusts to your body weight. You always know which phase you're in and roughly when you'll reach full.

■ Widgets

Keep your saturation and today's intake on your Home Screen and Lock Screen.

[ Creatine Tank Pro (one-time purchase) ]

Pay once and everything below unlocks. There is no subscription and nothing auto-renews.

• Apple Watch app - log +3g or +5g from your wrist
• Large widget, plus a widget with +3g / +5g buttons
• 90-day analysis
• Stats tab - this month's summary and how it lines up with your training
• Set your own daily target
• Save unlimited products
• CSV export

Logging, Home, Calendar and the 7- and 30-day analysis stay free forever.

[ Before you start ]

Creatine Tank is not a medical device. The "estimated saturation" it shows is calculated from what you log - it is not a measurement of the creatine in your body. If you have any concerns about supplements or your health, or if you have a medical condition or take medication, please talk to a doctor or pharmacist.

What you log stays on your device. It is never sent to the developer or any third party. Health is only read for body weight and workouts - nothing is ever written back.