eDiary
The ProCTTH subject mobile app works as a complete eDiary for clinical trials. Subjects record daily symptoms, medication intake, and study observations from their own phone, and smart reminder notifications make sure entries happen on time. Every entry is timestamped at the moment of capture, so diary data is accurate, compliant, and free of the recall bias that plagues paper diaries.

What you get
eDiary replaces the paper diary that subjects forget, back-fill, or lose. The site defines the diary schedule and questions on the desktop console; the ProCTTH subject app then prompts subjects to complete their entries at the right cadence — daily, multiple times a day, or event-driven. Reminder notifications keep completion high, and because each entry is timestamped when it's made, sites and sponsors can trust the data instead of guessing when it was really recorded. Entries flow into the same source record as the rest of the study, and sites can watch diary compliance live to intervene early with subjects who fall behind.
Remote Capture
eDiary
Purpose-built for hybrid & decentralized trials — one workflow across desktop and mobile.
Desktop for study teams, mobile for subjects
eDiary works across the ProCTTH hybrid platform — site staff (CRC, PI, CRA) work on the desktop web console, while subjects access the study from the mobile app.
Desktop console
CRC · PI · CRA
CRC and PI configure the diary schedule, questions, and reminder cadence, then monitor per-subject diary compliance and completion in real time, following up with subjects who miss entries.
Mobile app
Subject
Subjects get reminder notifications when a diary entry is due, log symptoms, medication, and observations in the ProCTTH app in seconds, and see their own streak and history — with each entry timestamped as it's made.
From setup to outcome
Set up the diary
The site defines diary questions, cadence, and reminder timing on the web console.
Remind the subject
The ProCTTH app sends reminder notifications so subjects complete entries on schedule.
Capture in the moment
Subjects log entries on their phone; each is timestamped at capture, removing recall bias.
Track compliance
Diary data flows into eSource and sites monitor completion live to follow up early.
Common questions
How does the eDiary reduce missed entries?
Reminder notifications prompt subjects when a diary entry is due, and sites can see who is falling behind and follow up in real time.
Does it prevent back-dated diary data?
Yes. Each entry is timestamped at the moment of capture, so diary data reflects when it was actually recorded — eliminating paper-diary recall bias.
Where does diary data go?
Diary entries flow into the same source record as the rest of the study, feeding the blinded eCRF and analytics automatically.
