Frequently asked questions
Can't find your answer? Write to support@aralel.com.
Is Adenal free?
Yes. Adenal is free and shows a small ad banner on the Today, History and Insights screens. Ads are not personalized unless you turn that on in Settings → Privacy.
How does Adenal estimate the caffeine in my body?
Each drink is absorbed over the first hour or so and then broken down at a steady rate. Adenal adds up every drink from the last 48 hours using your caffeine half-life: 3 hours (fast), 5 hours (normal, the default), 7 hours (slow) or your own value. Half-life varies a lot between people, so the result is an estimate, not a measurement.
What is the sleep line?
The amount of caffeine below which you are likely to fall asleep without trouble. It is 50 mg by default; change it in Settings → Limits. Safe-to-sleep time is when your level drops below this line and stays there.
Do I need an account?
No. Without an account everything stays on your phone. An account (Sign in with Apple or email) backs up your data and syncs it between your devices.
Why is going to bed recorded separately from sleep?
Lying in bed is not the same as sleeping. Recording both shows how long it takes you to fall asleep, which caffeine affects most.
How does sleep detection work?
Your phone's motion sensors show when it lay still for a long time. Adenal suggests that period as sleep and you confirm, adjust or dismiss it. Motion data is processed on your phone and never sent anywhere.
When do Insights appear?
After 14 recorded nights. Before that there is not enough data to compare nights with and without late caffeine.
Does Adenal work on Apple Watch?
Yes. Log drinks from the Watch app or the complication, and see your current caffeine level on your watch face.
Which phones does Adenal run on?
Android phones and iPhone, with an Apple Watch app. Get Adenal on Google Play. The iPhone app is in beta: install Apple's TestFlight app, then open the TestFlight invite on your iPhone.
A drink I have is missing. What can I do?
Scan its barcode (packaged drink data comes from Open Food Facts) or create your own drink with its caffeine content. Brands can send their drinks to brands@aralel.com.
How do I export my data?
Settings → Account → Export my data. You get a JSON file with every drink, sleep record and setting.
How do I delete my account?
In the app: Settings → Privacy → Withdraw consent and delete all data. Without the app: delete your account on this website. Both delete your account and all synced data on our server right away.
Is Adenal medical advice?
No. Adenal is not a medical device. Its caffeine values are estimates for everyday decisions. Talk to a doctor about sleep problems, pregnancy, heart conditions or medication that interacts with caffeine.