Trial participant diary app
Hypothetical. Not a client, not a result.
// The problem
A sponsor running a multi-site trial collects symptom diaries on paper, filled in late or all at once, and site staff transcribe them into the EDC.
// What we would build
An iOS and Android diary app with reminders at the right time of day, a site portal for coordinators, and a data export to the EDC, with the audit trail and electronic signatures 21 CFR Part 11 and ICH GCP expect.
// What is in it
- Diary entries timestamped on the device, with late entries clearly marked
- Reminders on the participant's own schedule, in their language
- A site portal where coordinators see compliance and follow up
- Audit trail of every entry and change, with reason for change
- Data export to the sponsor's EDC on an agreed schedule
- Validation package: requirements, test scripts and traceability matrix
// Stack
- React Native
- Next.js
- PostgreSQL
- EDC export interface
- AWS (Canada region)
// estimate
- Build
- ≈ US$167,000 to US$255,000, delivered within 37 weeksCAD 237,200 to 362,900
- Hosting
- ≈ US$492 a monthCAD 700 a month
- Support
- ≈ US$5,010 a monthCAD 7,135 a month
Prices in your currency are estimates from today's Bank of Canada rate. All invoicing is in CAD or USD.
Timeline by milestone
- Discovery
- 2.9 to 3.4 weeks
- Design approved
- 6.4 to 11.4 weeks
- Core features
- 1.9 to 2.9 weeks
- Full build
- 1.4 to 1.9 weeks
- First build on devices
- 3.4 to 5.9 weeks
- Testing and fixes
- 0.4 to 0.9 weeks
- Store submission
- 0.4 to 0.9 weeks
- Validation package delivered
- 0.9 to 1.4 weeks
- Controls built and evidenced
- 0.4 to 0.9 weeks
- Readiness review
- 0.4 to 8.4 weeks
- Launch
- 0.9 to 1.4 weeks
Outside our hands, and added to the calendar
- App store review
- 1 week
- Vendor test environment access
- 1 to 4 weeks
- Business associate agreements with your vendors (HIPAA)
- 2 to 6 weeks
- Booking a penetration tester and their report
- 2 to 4 weeks
How it is paid
- Deposit 20%
- CAD 47,440 to 72,580
- Discovery 5.9%
- CAD 13,994.80 to 21,411.10
- Design approved 5.9%
- CAD 13,994.80 to 21,411.10
- Core features 4.8%
- CAD 11,385.60 to 17,419.20
- Full build 3.2%
- CAD 7,590.40 to 11,612.80
- First build on devices 12.8%
- CAD 30,361.60 to 46,451.20
- Testing and fixes 1.6%
- CAD 3,795.20 to 5,806.40
- Store submission 4.2%
- CAD 9,962.40 to 15,241.80
- Validation package delivered 12.7%
- CAD 30,124.40 to 46,088.30
- Controls built and evidenced 6.3%
- CAD 14,943.60 to 22,862.70
- Readiness review 6.3%
- CAD 14,943.60 to 22,862.70
- Launch 6.3%
- CAD 14,943.60 to 22,862.70
- Holdback, 30 days after launch (10%)
- CAD 23,720 to 36,290