Martin Black 

Revdataboard is a lightweight, free dashboard builder for anyone who wants to see their numbers clearly without giving them away. It has the following features:
 

- Easy to use constructor. Add rows one at a time with a simple date picker, category and channel fields, and a revenue amount - or import an existing CSV. 

- Instant, interactive charts. Your data appears as a revenue-over-time line chart, a channel mix donut, and a category bar chart. Filter by category or channel with a click, or zoom the line chart to the last 7, 30, or 90 days.

- Private by design. Every calculation happens inside your browser. Your data is never transmitted, stored, or seen by anyone. No accounts, no sign-up.

- Works offline. Revdataboard is a Progressive Web App, so you can install it to your home screen or desktop and keep using it without a connection.

- Free to use. For personal projects, business analysis, or anything else lawful. No paywall, no feature limits, no subscription.

Download your filtered data as CSV, or save the entire dashboard as a PNG, JPEG, or SVG image.

My Health Record is a private, offline-first Personal Health Records app. No account, no tracking, no subscription - just your health records, simplified. Your health information is across seven easy-to-navigate tabs:
 
1. Summary - A quick overview of your key health data.
2. Vitals - Blood pressure, heart rate, weight, and more, with dates and notes.
3. Medications - Current and past prescriptions.
4. Conditions - Record of diagnoses and their status.
5. Allergies - Allergens, reactions, and severity.
6. Immunizations - Your vaccination history.
7. Profile - Your personal details and emergency contacts.
 
Your data never leaves your device - everything is stored locally. You can export and import your records as a JSON file anytime.