The private logbook for GLP-1 and peptides
Reko is an iPhone app for recording every shot and dose, the site it went into, and what happened after. Weight, side effects, food, sleep, labs and cycle in one place, with your record kept on your phone.









Reko is an iPhone app for recording every shot and dose, the site it went into, and what happened after. Weight, side effects, food, sleep, labs and cycle in one place, with your record kept on your phone.









Amount, time and site in a few taps.
Beside your doses, so you can see patterns.
From your own doses and the published half-life.
An estimate, not a blood test.
The trend, not every up and down.
Against targets you set yourself.
What is left, counted down as you log.
Record the amount, time and injection site in a few taps. A body map shows which sites you used recently, so you can rotate them. Schedules cover weekly shots, daily doses, step-up titrations and on/off cycles. Reminders never name your medication on the lock screen.
See the logbook →
Reko draws an estimated level from your own doses and each compound's published half-life, so you can read the rise and fall between injections. It is an estimate, and it says so.

Log nausea, tiredness, bloating and the rest the day they happen, then look at them beside your dose history. Bring a clear picture to your next appointment.
See side effects beside doses →
Track what is left in each vial as you log. The reconstitution calculator turns what is in the vial and the water you add into syringe units to draw, and warns you when a draw falls between your syringe's markings. You decide the dose; Reko only does the arithmetic on your numbers.

Follow your weight over time, log protein, water and food, add sleep and training, and read what you allow from Apple Health. Scan a printed lab report and check every value before it is saved. Cycle tracking sits beside your doses and is never uploaded.
See everything Reko tracks →
Plain-language guides and small free tools. No sign-up.
One number reader across the app, and anything read from a photo or a file is shown back to you before it is saved.
No account needed. Your record stays on your iPhone unless you turn backup on. Apple Health data and cycle entries never leave the phone.
Reko recommends nothing, sells nothing and suggests no doses. The price is on this page, not sprung on you after setup.
You get two weeks free, then $39.99 a year or $9.99 a month. Before you pay you can open every screen with a full example record.
No. Reko records what you and whoever prescribed or supplied it decide. It is not medical advice.
Yes. A body map shows the sites you used recently.
Yes, and the reminder never names your medication on the lock screen.
If you allow it, Reko reads weight, food, sleep and workouts from Apple Health so you type less. What it reads stays on your phone.
On your iPhone. If you turn backup on, doses and notes are stored on servers in the EU. Cycle entries are never uploaded.
Not yet. Reko runs on iPhone and iPad, with an Apple Watch complication and a home-screen widget.
Two weeks free. Open every screen with an example record before you pay.