Life Battery: Life Expectancy
Death clock you can recharge
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
How much of your life battery is left? The full result is free — no account, no ads. Then watch it charge back every day you move, eat well and sleep.
How much of your life battery is left?
Life Battery shows your estimated time left as a battery. It drains by the second, like real time does — and every good day charges it back.
FREE. THE WHOLE RESULT.
No paywall, no account, no ads. Three questions and you see your battery, your years and months left, and how many weekends that is.
THE DEATH CLOCK YOU CAN RECHARGE
Most life expectancy calculators give you one number and stop. Here every day counts: a 20-minute walk adds an hour, five handfuls of fruit & veg add two. A short night or a big night out drains a little. Days off count zero — never a penalty. Watch the clock roll forward when you save your day.
NOTHING TO TYPE
Workouts and sleep come in from Apple Health — Apple Watch, Nike Run Club, Strava, Garmin Connect and any app that writes to Health. No watch? Brisk walks are counted from your iPhone's steps. A 10-second log at night adds drinks and fruit & veg.
SMOKER? EVERY CIGARETTE YOU SKIP CHARGES IT
Your usual habit is already in your starting number, so each cigarette fewer than usual charges your battery.
SEE YOUR WEEK
Each day is a bar: what it charged, or what it drained. Green days charge, amber days drain.
ON YOUR LOCK SCREEN
Widgets show your battery without opening the app.
SHARE YOUR NUMBER
Make a story card — your age, your %, the weekends you have left — and ask your friends: what's yours?
EVERY NUMBER HAS A SOURCE
Life tables from the US Social Security Administration, the WHO and national statistics offices. Daily charges use David Spiegelhalter's "microlives" (BMJ 2012) and a sleep meta-analysis (Sleep 2010). It's all itemized in the app.
PRIVATE
Everything stays on your iPhone. No account, no servers, no tracking.
Life Battery's numbers are statistical estimates for entertainment and motivation. They are not medical advice, not a diagnosis, and not a prediction for any one person. Talk to a doctor about your health.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• See every charge: when you save your day, your time left rolls forward.
• The liquid turns amber on days that drained it.
• A new reveal, a new icon, and a share card with the weekends you have left.
• Smokers: cigarettes are now counted against your usual habit — fewer than usual charges.
• No watch at night? Add last night's sleep yourself.
• Log yesterday until 4 a.m., and no reminder on days you've already logged.
• Clearer words everywhere.
The developer, Jaemin Shin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jaemin Shin
- Size
- 1.6 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Korean, Vietnamese
- Age Rating
13+
- 13+
- Infrequent
Alcohol, Tobacco, Drug Use or References
Contains
Health or Wellness Topics
- Copyright
- © 2026 Jaemin Shin