woest.io · 2026

Fieldnote

Privacy-first health tracking, built native using SwiftUI for iPhone. Two App Store apps (FODMAP + Menopause), an Apple Watch app, and one tested Swift backbone.

Fieldnote suite of apps
Fieldnote — native iOS health tracking, private by design. fieldnote.health
Apps shipped
2
Core unit tests
105
Ingredient database
514-entry
Menopause symptoms
12

Deliverables

Logging ingredients made easy

#1 Log

Free text logging of meals with robust ingredient detection and tap to log for everything else makes going from data to insights as frictionless as possible.

Frictionless logging is key to insight quality

Logging on menopause symptoms is a series of tabs with an optional note
Free form meal input to naturally log meals
Free form input is then parsed and ingredients are detected. Amounts can be added, missing ingredients can be added.
Logging hydration is an important factor into generation of insights

Chronological overview of all data

#2 Journal

The journal shows a drill down of ever more granular data, allowing for inline editing when something is not quite right or missing still.

Journal is the gateway to insights

The FODMAP journal gives quick insights into your month, week and day. Day view gives a detailed list of logged food, drinks, exercise and symptoms.
The Menopause journal follows the same pattern, high level insights for month and week, a detailed breakdown per day.

Cards and timeline views with insights

#3 Insights

Insights are generated through an on-device insights engine and results never leave the app. Data points include whatever is logged in the app, and HealthKit data — if the user explicitly opts in.

The insights screen renders insight cards, a history graph and a list of top triggers
The Menopause app follows the same convention, insight cards, timeline and cycle information
See patterns over time with insights marked for further exploration

Concrete conversation starters for health professionals

#4 Reports

Reports contains a concise overview of data points and suggestions for topics to discuss with health care professionals. Generated on device, fully private.

Reports outline all crucial data points for easy sharing with nutritionists and physicians

Process

Shared versus bespoke

Content Model

A set of shared and app-specific data sets allowing for efficiency and customization.

Elegant architecture

Technical architecture

An elegant data model governs both apps (and any future apps) making use of shared data architecture.

App Navigation

Clear navigation structure across apps, recognizable but adjustable per each app’s needs.

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All work →