Why we built Feltide.

Daily life matters alongside symptoms.

The World Health Organization’s ICF framework describes health and functioning in context. Its WHODAS assessment covers areas such as cognition, mobility and participation. Feltide uses an optional usual-activities tracker, but it does not administer WHODAS or calculate an ICF or WHODAS score.

WHO — International Classification of Functioning, Disability and Health · WHO — WHODAS 2.0

Rest belongs in the record.

CDC guidance describes delayed symptom worsening after physical or mental activity in ME/CFS and similar experiences in Long COVID. Feltide therefore uses neutral activity language and offers optional physical-effort, mental-effort and worse-after-activity trackers.

Following-day comparisons can show timing in your own entries. They cannot establish cause, diagnose a condition or recommend activity or treatment.

CDC — Strategies to Prevent Worsening of ME/CFS Symptoms · CDC — Long COVID Signs and Symptoms

Medicine records should say what happened.

FDA guidance recommends keeping an up-to-date medicine list with instructions. In Feltide, you enter your daily schedule and mark each dose taken or skipped. A dose you do not mark stays unrecorded. Its timestamp shows when you saved the record, not when you took the medicine.

Feltide does not choose medicines, recommend doses or turn missing records into an adherence score.

FDA — Create and Keep a Medication List

Food and weight are optional, without judgment.

The American Heart Association discusses weight records in heart-failure monitoring. NICE advises against relying on single measures such as BMI alone when assessing eating disorders. Feltide keeps body weight off by default and has no BMI, ideal weight or calorie goals.

If you turn it on, you can use kg or lb without changing the saved measurement. Food entries compare quantity with what is usual for you and avoid good-or-bad labels.

American Heart Association — Managing Heart Failure Symptoms · NICE — Eating Disorders: Recognition and Treatment

Recording a day should take less effort.

W3C guidance calls for simple words, short sentences and unambiguous content. Apple’s declaration criteria cover features such as larger text, reduced motion and alternatives to color. We used both when reviewing Feltide’s wording and interface.

W3C — Clear and Understandable Content · Apple — Configuring Accessibility Declarations