WaveFast vs Habit Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WaveFast
Track your intermittent fasting with a visually engaging and user-friendly interface. This app offers a one-time purchase, no subscriptions, and prioritizes user privacy by storing all data locally. Stay motivated with fluid animations and smart notifications.
- Mesmerizing fluid wave animation
- Dynamic Island & Live Activities integration
- History and streak tracking
- Customizable water themes
- Body status insights
- Smart notifications
- Privacy-focused local data storage
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Reach your intermittent fasting goals with WaveFast, the most visually stunning and intuitive fasting tracker on the App Store. Say goodbye to bloated apps and expensive monthly subscriptions. WaveFast is built for one thing: tracking your fast with an elegant, fluid interface that makes reaching your goals satisfying and stress-free. Pay once, use forever. No accounts, no data tracking, no subscriptions. CORE FEATURES: 1、Mesmerizing Fluid Animation: Watch your progress rise like water. The calming wave animation reduces anxiety and keeps you motivated. 2、Dynamic Island & Live Activities: Never open the app just to check the time. Keep your fast visible on your Lock Screen and Dynamic Island. 3、History & Streak Tracking: Never lose your progress. WaveFast automatically saves your completed fasts so you can track your journey, view your longest fast, and build your streaks. 4、Custom Water Themes: Personalize your experience with stunning premium colors like Sakura Pink, Aurora Green, and Midnight Purple. 5、Body Status Insights: Know exactly what's happening inside your body—from fat burning to autophagy—based on real-time scientific milestones. 6、Smart Notifications: Get instantly notified when you reach the fat-burning zone and when your goal is achieved. 7、Privacy First: All your data stays locally on your device. We respect your privacy. Available fasting plans include 12h, 14h, 16h, 18h, and 20h. Whether you are a beginner or a seasoned faster doing OMAD, WaveFast is your perfect companion. Start your health journey today, beautifully. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Habit Builder
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Habit Builder – Ganbaru! helps you keep the habits that matter, one check-in at a time. FEATURES • Create habits with icons, categories, schedules and reminders • One-tap check-ins and daily score • Streaks, history and weekly reports with charts • A companion that earns XP, levels up and unlocks new forms and badges • Habit plans and encouragement generated on your device with Apple’s on-device AI (where available) • Widgets, Live Activities, Shortcuts and an Apple Watch app • Optional iCloud sync to your own private iCloud • Export your data as JSON at any time PRIVACY No account, no ads, no analytics, no tracking. Available in English, German and Persian (Farsi), plus many more languages.
Screenshots
Verdict
The clearest difference is price: WaveFast at Free against Habit Builder's $2.99. Habit Builder's advantage is in-app purchases (none vs 1) and update cadence (every 2 days vs every 3 weeks). On ads 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
WaveFast is free to download; Habit Builder costs $2.99 up front. WaveFast sells 1 one-off in-app purchase. Habit Builder asks for nothing beyond the download.
WaveFast ships an update every 3 weeks, Habit Builder every 2 days. Both last shipped on October 24, 2026.
| Parameter | WaveFast | Habit Builder |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 21 MB |
| Age rating | 9+ | 4+ |
| Developer | 瑞华 张 | Abolfazl Rejali |
Customer experience
WaveFast
Habit Builder
In-app purchases
WaveFast
- WaveFast Pro$5.99
Habit Builder
No in-app purchases









