Comparison

VOID vs Intermittent Fasting

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VOID

This AI-powered coach visualizes your fasting progress, from blood sugar depletion to fat burning. Log meals instantly with photo recognition or voice commands, and receive personalized nutrition and exercise advice. Gamified motivation and smart hydration tracking help build healthy habits.

Highlights
  • AI-powered nutrition coaching
  • Visualized fasting progress
  • AI meal logging via photo/voice
  • Deep Apple Watch integration
  • Personalized nutrition advice
  • Gamified motivation and rewards
  • Smart hydration tracking
Features
Read full description

VOID isn't just another fasting app — it's your AI-powered nutrition coach. [Science-Based Fasting, Visualized] Track your fasting progress in real time — from blood sugar depletion to fat burning and cellular autophagy. Every metabolic stage is clearly displayed with dynamic breathing glow animations that let you feel your body's rhythm. [AI Photo Recognition — Log Meals in 3 Seconds] Snap a photo and AI instantly identifies food types, estimates calories, protein, carbs, and fat. Don't want to take a photo? Just say "a bowl of rice and a fried egg" — AI understands instantly. [Deep Apple Watch Integration] Everything on your wrist — fasting countdown, today's calorie rings, voice meal logging, and one-tap water tracking. 4 watch face complications keep your fasting status visible at a glance. [6 Stunning Home Screen Widgets] From cyber-punk to fresh nature, from macaron-cute to Apple Vision spatial style — there's always one to brighten your home screen. [AI Personal Coach] Based on your fasting history, diet records, and weight trends, your AI coach delivers personalized nutrition advice and exercise guidance daily — not templates, but plans truly made for you. [Gamified Motivation] Build streaks, earn "Cell Coins," and unlock achievement badges. Discipline doesn't have to be boring — every day of consistency is celebrated. [Smart Hydration Tracking] Set daily goals, log water with one tap, and watch your progress ring fill up. Staying hydrated becomes a habit. [Privacy First] All data stays on your device. We never upload, analyze, or sell your health data. Your body data belongs to you, and only you.

About

Intermittent Fasting

Features
Read full description

Biwo makes intermittent fasting simple and fun. Track your fasting sessions with a beautiful circular timer, see your progress through different fasting phases, and build healthy habits effortlessly. Choose your fasting method: • 16:8 - The most popular method • 18:6 - For experienced fasters • 20:4 - Advanced fasting • OMAD (23:1) - One Meal A Day Features: • Beautiful circular timer with real-time progress • Scan meals for instant calorie & nutrition info • Fat burning & autophagy phase tracking • Complete fasting history • Day Streak tracker to keep you motivated • Start a fast in just one tap • Works completely offline - no account needed • Personalized onboarding Start your fasting journey today with Biwo! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

Screenshots

VOID4 screens
Intermittent Fasting4 screens

Verdict

The call

The clearest difference is in-app purchases: VOID at none against Intermittent Fasting's 3. Intermittent Fasting's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Intermittent Fasting sells 3 in-app purchases, starting at $1.99 per 7 days. VOID asks for nothing beyond the download.

UpkeepUpdate frequency

VOID ships an update every 3 weeks, Intermittent Fasting every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
VOID versus Intermittent Fasting: the parameters behind the verdict, then further details
ParameterVOIDIntermittent Fasting
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size50 MB68 MB
Age rating17+4+
Developer河南雀科信息科技有限公司Sylvain Fertons

In-app purchases

None

VOID

No in-app purchases

3 purchases

Intermittent Fasting

Subscriptions3
  • Biwo Pro Weekly$1.997 Days
  • Biwo Pro Monthly$4.991 Month
  • Biwo Pro Yearly$49.991 Year

Questions

Is VOID free?
VOID is free to download, with no in-app purchases.
Is Intermittent Fasting free?
Intermittent Fasting is free to download, with in-app purchases available.
Do VOID or Intermittent Fasting have ads?
Neither VOID nor Intermittent Fasting shows ads.
Which is updated more often, VOID or Intermittent Fasting?
VOID ships an update every 3 weeks, and Intermittent Fasting every 3 days. Most recently, VOID was updated on October 30, 2026 and Intermittent Fasting on October 31, 2026.

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