Start with time, place and sensation
Record when the observation happened, not only when you opened the app. Describe the location in words or add a point to the 3D body reference. Left and right refer to the person shown. You can edit the location name without moving the point.
Describe the feeling, such as aching, burning or pressure, and select a 0–10 rating for that recorded moment. An organ annotation is only your chosen reference; a surface location cannot establish which organ or condition is responsible.
Add the context you actually know
Useful optional details include when the pain started, whether it was still happening, how long it lasted, and how often it returned. Add effects on walking, work, caring responsibilities or sleep when they matter to you.
If you tried something, record what it was and what happened afterward. For a medicine, you can note its name, dose and time as taken. This records an observation; it does not establish that the action caused improvement or suggest a new dose.
Make the record sustainable
You can record a pain-free moment as 0. A day without an entry remains missing information, not a pain-free day. If you add an observation later, use the original time and make uncertainty clear in your notes.
Opening an entry shows its details first. Choose Edit only when making a correction. Review your history periodically and export copies you want to keep; uninstalling the app can remove local records.
Further reading
MedlinePlus · PainProduct guidance by Muqi Pain Journal. Not a clinical review.