Quick Log
Log a saved food or meal in one tap.
Mobile app / Calorie tracking
QuickCal
QuickCal is a focused iOS and Android calorie counter built for speed. Users keep a personal food library on the device and log known meals in one tap or through a short portion step.
Overview
What QuickCal is about
What it is
QuickCal is a small iOS and Android calorie counter designed around fast repeat logging. There is no account and no shared online food database; foods, logs, settings, planner data, and images stay on the device.
Why it exists
Many calorie apps make repeat logging slow by forcing users through large shared food catalogs. QuickCal treats setup as a one-time cost: save the foods you actually eat, pin frequent items, then log them quickly from Home.
My role
I designed and built QuickCal as a solo project, including the native mobile UI, offline-first architecture, SQLite data layer, logging workflows, trial and lifetime purchase flow, backup tools, and iOS/Android release configuration.
Product focus
Fast logging, fully on-device
QuickCal keeps the experience small on purpose: a personal food library, one-tap Quick Log, portion multipliers when needed, and local SQLite storage — with a 14-day trial and a one-time lifetime unlock.
Core experience
What you can do
Portion Logging
Use 1x, 1.5x, 2x, or a custom multiplier for portion-based items.
Personal Library
Maintain your own on-device food library with optional photos and pinned items.
Offline Reference Foods
Copy common USDA reference ingredients into your personal library without relying on an online food database.
Today & History
Review, edit, delete, and undo logged entries while browsing previous days.
Goals & Planner
Set calorie and optional macro goals, with a local calorie planner that can calculate recommended targets.
Local-First Data
SQLite storage, retention controls, ZIP backup/import, and no account or cloud sync required.
Contribution
What I built
Product architecture
Built QuickCal as an offline-first native mobile app with no application backend. SQLite is the source of truth for foods, logs, goals, settings, planner data, and entitlement state.
Mobile UI
Built a four-tab native interface for Home, Library, History, and Settings, including quick-entry controls, pinned foods, Today’s Log, themes, and mobile-safe navigation.
Logging & personal library
Implemented typed calorie logging, one-tap Quick Log, portion-based logging, user-owned library items, pinned foods, optional local images, and an offline reference-food copy workflow.
Local data
Implemented versioned SQLite migrations, snapshot-based log history, configurable retention, clear-history and erase-all flows, and local ZIP export/import.
Planner & settings
Implemented calorie and optional macro goals, day reset time, retention settings, themes, onboarding replay, and a local calorie planner.
Purchases & release
Implemented a 14-day trial, one-time lifetime unlock, purchase restore, local entitlement caching, and EAS configuration for iOS and Android store builds.
Technology
Stack
Mobile
- Expo 54
- React Native 0.81.5
- React 19.1
- expo-dev-client
Language
- TypeScript
Database / Storage
- SQLite / expo-sqlite
- expo-file-system
- Bundled JSON reference foods
- fflate for ZIP backup
Navigation / UI
- React Navigation 7
- react-native-screens
- react-native-safe-area-context
- expo-linear-gradient
- expo-font
- expo-image-picker
- expo-image-manipulator
Purchases
- expo-iap
- App-managed local trial/entitlement state
Tooling
- TypeScript checks with tsc
- EAS Build
- Node smoke scripts
Get the app
Get QuickCal
Download QuickCal on iOS or Android — offline-first calorie tracking with a personal food library.