Day by Day is designed to help you track medications, symptoms, and wellbeing during chemotherapy treatment cycles. The app works entirely on your device – no account needed, and your data stays private.
For the best experience, add Day by Day to your phone's home screen:
Once added, the app opens full-screen like a native app and works offline.
Before you start, go to Settings and:
After the first load, Day by Day works completely offline. You can track medications, symptoms, and notes without an internet connection. The daily quote feature requires internet but the app remains fully functional without it.
On touch devices, swipe left or right to move between the Today, Calendar, and Settings views.
The Today view is your daily dashboard, showing everything relevant to the current day.
Medications are grouped by time of day, each with a colour:
Day by Day recognises important moments in your treatment journey with encouraging messages and celebrations:
These messages can be turned off in Settings if you prefer a simpler view.
Tap any medication card to mark it as taken. The app records the exact time and shows a green checkmark. Tap again to undo if you made a mistake.
Many medications have an "info" link that opens a patient information page. This is useful for checking side effects or interactions.
Use the + and − buttons to log doses of PRN medications like pain relief or anti-nausea tablets. The counter shows how many you've taken versus the daily maximum.
The progress bar at the top shows what percentage of your scheduled medications you've taken today. This only counts scheduled medications, not PRN ones.
Enter your temperature in °C. If it reaches 38°C or above, a message will appear reminding you to contact the oncology team.
Daily weight tracking helps identify significant changes. The app shows your change from baseline (your first recorded weight) in both kg and percentage.
Rate each symptom from 1 to 5. The colour of each button reflects whether higher or lower is better for that symptom. The symptoms tracked are:
Tap a number to select it. Tap again to deselect. These ratings help you and your care team spot patterns over time.
Even on difficult days, noting something positive can help. It doesn't have to be big – maybe you managed a short walk, enjoyed a meal, or had a good conversation.
At the top, you'll see how far through the current cycle you are, with a progress bar and day count.
Use the cycle pills (Cycle 1, Cycle 2, etc.) to view different cycles. Only cycles with dates set in Settings will be available.
Each day shows the calendar date and cycle day (D-1, D0, D+1, etc.). Days are colour-coded:
Tap any day to view or edit that day's data in the Today view.
When viewing past or future days, a "Back to Today" button appears to quickly return to the current date.
Below the calendar, you'll find line charts showing how each symptom has varied across the cycle. These charts help you and your care team visualise patterns – for example, seeing when fatigue typically peaks or how long nausea lasts after treatment.
Enter your name, email address, date of birth, and patient/hospital number. Your first name is used in the daily greeting, and your details appear on summary reports and PDFs.
Add phone numbers for your oncology unit, out-of-hours service, and GP. These appear on the Today screen for quick access – tap to dial.
Customise your treatment cycle settings to match your specific protocol:
These settings affect how the calendar displays your cycles and which days appear in your medication schedule. If you change the cycle length, you may need to adjust your medication day ranges accordingly.
Enter the Day 0 (chemotherapy day) for each cycle as you get scheduled. The app calculates all other days automatically based on your configured cycle length. The number of cycle date fields matches your configured number of cycles.
View all your scheduled medications. You can:
Each medication shows which times of day it's taken (checkboxes) and the day range.
Toggle between dark and light mode, show or hide daily messages, and choose an accent colour that appears throughout the app.
Day by Day can send gentle reminders whilst you're using the app to help you stay on track with logging and backups. All notifications are optional and can be customised to your preferences.
To use notifications, go to Settings > Notifications and enable the feature. You'll be asked for permission to show notifications – this is required for the feature to work.
You can adjust:
If you open the app after a scheduled notification time has passed, the app will detect this and show you a gentle reminder. This helps you stay on track even if you didn't have the app open at the exact scheduled time.
Most notifications include action buttons so you can respond without fully opening the app. For example, "Open App" or "Snooze" buttons.
Tap "Send Daily Summary Email" to generate a report of the day's data. This opens your email app with a pre-filled message containing:
At the end of each cycle, you can generate a comprehensive PDF summary to share with your care team or keep for your records.
Your data is stored locally in your browser. It can be lost if you clear your browser data, switch devices, or reset your phone. Regular backups protect against this.
Downloads a JSON file containing all your data – medications, tracking history, settings, everything. Save this file somewhere safe like iCloud, Google Drive, or email it to yourself.
Restore from a previously exported backup file. This replaces your current data.
Removes all tracking data (symptoms, medications taken, weights, notes) whilst keeping your personal details and cycle configuration. Use this if you want to start tracking fresh but keep your setup. This cannot be undone.
⚠️ Completely resets the app to default, removing ALL data including personal details, cycle dates, medications, and tracking. Use this only if you want to completely start over. This action requires double confirmation and cannot be undone.