SparkFast - Fasting Tracker

SparkFast App

In-app purchases

About this app

SparkFast is a science-based fasting tracker designed to help you follow intermittent fasting and prolonged fasting safely, confidently, and sustainably.

Whether your goal is weight loss, fat burning, improved metabolic health, more stable glucose, or increased energy, SparkFast provides a clear and intuitive fasting tracker with the guidance and motivation needed to stay consistent over time.

🔬 Science-Based Intermittent & Prolonged Fasting

SparkFast is built on evidence-based fasting principles, metabolic science, and behavioural research.
Use the fasting tracker to follow your fasting schedule, monitor progress, and understand how fasting affects weight, glucose, sleep, and energy.

SparkFast supports both intermittent fasting and prolonged fasting, with guidance designed to prioritise safety, recovery, and long-term metabolic health. Educational insights and refeed guidance help users approach longer fasts responsibly and with greater awareness.

Designed for beginners and experienced fasters alike, SparkFast focuses on consistency — the most important factor for long-term results.

⚖️ Weight Loss Made Simple & Sustainable

Intermittent fasting is a natural and effective approach to supporting weight loss and metabolic health. SparkFast makes fasting easier to maintain with tools that help you stay on track:

• Flexible fasting tracker and schedules
• Intermittent fasting timer and smart reminders
• Weight and body measurement tracking
• Science-based insights to support fat loss
• Visual progress charts for motivation

With the right structure and guidance, fasting becomes easier to sustain over time.

📊 Track Glucose, Ketones & Metabolic Signals

SparkFast allows you to log and track key metabolic markers, including:

• Glucose
• Ketones
• Weight
• Sleep

Tracking these signals helps you understand how food choices, stress, sleep, and fasting duration impact your metabolic health and overall wellbeing.

🔥 The SPARK Chart: See Your Body at Work

The SPARK Chart provides a simple visual overview of your fasting journey using clear, meaningful indicators.
See patterns over time, understand fasting adaptations, and stay motivated with achievable daily progress.

This approach helps transform fasting into a structured, data-informed habit rather than guesswork.

🧠 Behaviour Support & Smart Motivation

SparkFast combines behavioural science with intelligent reminders and daily guidance to help you navigate common fasting challenges such as hunger, cravings, or low motivation.

As you use the app, SparkFast adapts to your habits, creating a more personalised fasting experience without complexity.

🌙 Improve Energy, Sleep & Overall Wellbeing

Many users report improvements in energy levels, sleep quality, focus, and digestion as their body adapts to fasting.
SparkFast helps you connect your fasting habits with broader health and wellbeing insights.

💡 Supports All Fasting Protocols

SparkFast supports a wide range of fasting styles, including:

• 12:12
• 14:10
• 16:8
• 18:6
• OMAD
• Prolonged fasting
• Custom fasting schedules

Choose your fasting window, track your progress, and stay accountable.

🌱 Build Healthy Habits That Last

SparkFast is not a diet app. It’s a science-driven fasting system designed to help you build long-term habits through awareness, consistency, and simple daily tracking.

✨ Why Choose SparkFast?

✔ Science-based fasting tracker
✔ Intermittent & prolonged fasting support
✔ Fasting timer and reminders
✔ Weight loss and habit tracking tools
✔ Glucose and ketone logging
✔ Smart motivation and insights
✔ Sleep and wellbeing tracking
✔ Visual SPARK Chart for progress

SparkFast empowers you to understand your body, approach fasting responsibly, and achieve sustainable results.

❤️ Start your fasting journey with SparkFast — a fasting tracker built for real life, real science, and long-term health.

What’s new

• Added in-app feedback - Share bug reports, feature ideas, and questions directly from Settings
• Fixed promo code welcome popup for new users