Fasting Tools

Practical tools to support fasting in real life - tracking apps and essential items that help with planning, hydration, electrolytes, and consistency. These are tools I’ve used or researched, selected for usefulness rather than hype. Some links may be affiliate and help support the site at no extra cost.

📊 Fasting Toolkit

During extended fasting, electrolytes become critical to help maintain hydration, energy, muscle function, and overall well-being. Just make sure the electrolyte mixes you use are zero-calorie - otherwise, they may break your fast. For a detailed breakdown of electrolytes, fasting recommendations, product rankings, and my personal protocol, check out my blog Electrolytes for Fasting - https://fasting.center/fasting-blog/electrolytes-for-fasting

Blue packet of Ultima Replenisher electrolyte drink mix with images of raspberries, a cherry, lemon, and orange slices, and four flavor sticks labeled Cherry Pomegranate, Grape, Lemonade, and Orange.

Ultima Electrolyte Mix
Zero-sugar hydration packets with 6 electrolytes

Container of Key Nutrients Electrolytes Powder in Peach Mango flavor with an illustration of a peach and mango slices, black lid, holographic label, indicating 90 servings, zero calories and sugar, emphasizing hydration and vitamin minerals.

Key Nutrients Electrolytes
Vitamin-enhanced electrolyte mix for regular fasting

A container of Ultima Replenisher Lemonade electrolyte drink mix with lemon slices and green leaves on the label.

Ultima Powder Mix
Same formula as packets, but lower cost

Labeled container of Bulletproof Collagen Protein Powder, unflavored, with mentions of advanced formulation, electrolytes, minerals, hydration, pH balance, USA-made, 30 servings, net weight 260 grams.

Brain Forza Electrolytes
Unflavored electrolyte mix without sweeteners or dyes

Box of Venture Pal electrolyte drink mix with 16 stick packs in various fruit flavors, including cherry, pineapple, strawberry lemonade, and blue raspberry, with colorful images of cherries, pineapple, strawberries, lemon, and blueberries at the bottom.

Venture Pal Electrolytes
Budget-friendly fasting hydration packets

Front of a white bag of San Francisco Salt Co. Himalayan Pink Salt with red and navy blue text, and a mountain range illustration.

Sherpa Pink Salt
Food-grade Himalayan salt with trace minerals

Thorne Daily Electrolytes dietary supplement package with 30 packets, flavored with blood orange, mango limeade, and watermelon, showing electrolyte content and ingredients.

A container of Re-Lyte hydration dietary supplement with watermelon lime flavor, featuring a black label with blue, white, and yellow text. It indicates zero calories, 60 servings, and weighs 13.4 ounces.

Re-Lyte Electrolyte Mix
High-sodium formula with unrefined trace minerals

Bottle of Nutricost Electrolyte Complex dietary supplement with 120 capsules and advanced hydration features.

Nutricost Electrolyte Complex
Capsule-based electrolytes for fasting support

I closely track my glucose, ketones, blood pressure, and sleep - that way I can confirm my body switches to ketones while keeping body processes stable and under control during fasting.

A glucose meter displaying a blood sugar level of 18 mmol/L, a continuous glucose monitor showing a ketone level of 1.8 mmol/L and a blood glucose reading of 83 mg/dl, and a smartphone app dashboard showing 52 readings with various health metrics.

Keto-Mojo GK+
Tracks glucose + ketones. App-ready and simple.

Packaging of keto Mojo glucose and ketone test strips, including boxes and individual strips with branding and product information.

Keto-Mojo Strips
Combo pack of glucose and ketone strips. GK+ only.

Front of a red and white box for A1CNow self-test kit, showcasing a digital glucose meter displaying a reading of 6.3%, and containing multilingual product information.

SelfCheck A1C
Track A1C at home in 5 minutes. No lab, no hassle.

I track my body weight and body fat - that way I can clearly see my progress in weight and fat loss.

Body composition scanner with a digital display showing body fat, muscle mass, and other metrics. A smartphone app displays detailed health data alongside the scanner.

Withings Smart Scales
High-end, accurate body composition scale

A digital body composition scale with a smartphone and smartwatch displaying health data and analysis reports.

arboleaf Scale
Comprehensive body data analysis, good price

A digital smart scale shows a weight of 158.5 pounds. Nearby, a smartwatch displays a weight of 189.5 pounds, BMI, and body fat percentage. A smartphone with a food diary app and an exercise plan interface is also visible.

Etekcity Smart Scale
Solid, cost-efficient body composition scale

A wireless digital blood pressure monitor with a white digital display and gray fabric cuff.

Withings BPM
Easy to use and convenient blood sugar monitor

A modern fitness tracker or smartwatch with an open band design and sensors on the inside surface.

Oura Ring Gen 4
Sleep, recovery, and readiness in one smart ring

Thorne Electrolytes
Clean electrolyte formula with higher sodium content

📱Fasting Apps

A blue background with a white stylized wireless or signal icon.

Easy Fast

Red background with the word 'Zero' in white text

Zero

Close-up of a power button icon with a green circle and orange circular outline.

Fastic

Icon of a stick with a round loop and three lines, representing a noose or no entry symbol.

Fastient