PEM Diary: ME/CFS crash log
By Add Jam
Free on iPhone and Android
- Price
- Free
- Category
- Health & Fitness
- Works on
- iPhone, Android
- Your data
- Stays on your device
About PEM Diary
Post-exertional malaise (PEM) is when you feel far more tired and unwell after physical or mental activity that you could normally handle. It’s a defining feature of ME/CFS and is also linked to Long COVID, but it’s hard to keep an accurate record when you’re in the middle of a crash.
PEM Diary gives you a simple place to log each episode with its dates, severity and symptoms. Over time that builds into a record you can use for your own insight, or take to your doctor.
PEM Diary is a personal tracking tool. Always speak to a healthcare professional for medical advice and treatment decisions.
See your patterns
A timeline and dashboard show how long your crashes last, how severe they are and what triggers them.
Log a crash with little effort
Add dates, a severity from 1 to 5, your symptoms and any notes. Built to work when you have very little energy.
Help when you need it
Recovery guidance and a sleep aid with white noise, for the days when rest is the only job.
Private by design
Your data stays on your device. It only leaves if you export it as a CSV to share with a healthcare professional.
I've had these 'episodes' for a long time but realised I had no clear picture of what had actually been happening. I figured I needed to find a simple way to log PEM episodes and I didn't want that data to be accessible to anyone else but me so PEM Diary was born. I'm customer number one for this app and fingers crossed it can help many others.
Frequently asked questions about PEM Diary
- Is PEM Diary free?
- Yes. PEM Diary is free to download on iPhone and Android.
- Who is PEM Diary for?
- PEM Diary is for people living with ME/CFS, Long COVID or unexplained fatigue who want a simple way to track post-exertional malaise.
- Is my health data private?
- Yes. Everything is stored locally on your device, with no cloud storage or data sharing. Your data only leaves your device if you choose to export it.
- Can I share my records with my doctor?
- Yes. You can export your data as a CSV file to share with a healthcare professional.
Get PEM Diary
Free on iPhone and Android
