# Streaks 66 - Daily Habit AI — Build Habits with AI Guidance > AI-powered 66-day habit tracker with customizable difficulty and sharing features. (iPhone/iPad app by Jia Hui Peng.) - Source: https://appshunter.io/ios/app/streaks-66-daily-habit-ai/id6496863309 (this page in markdown: same URL + `.md`) - Developer: [Jia Hui Peng](https://appshunter.io/developer/1064330286) - Category: Productivity, Health & Fitness - Price: Free with in-app purchases - Rating: 1.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 8 MB - Languages: English - Released: 2024-05-24 - Data updated: 2026-06-10 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/streaks-66-daily-habit-ai/id6496863309/reviews.md ## What is Streaks 66? Streaks 66 Habit Tracker: Ultimate App for Building New Daily Habits Transform your daily routine and build lasting habits with Streaks 66 Habit Tracker. Challenge yourself to a 66-day journey with customizable difficulty options, guided by our intelligent Habit Coach AI. Stay on track, motivated, and share your success with those who matter. Key Features: 66-Day Challenge: Commit to a new habit and track your progress over 66 days, the scientifically-backed period for habit formation. Difficulty Modes: Choose the level that suits you best—Perfect Mode for the disciplined, Normal Mode for the balanced, and Easy Mode for those just getting started. Habit Coach AI: Stay motivated and on track with our integrated AI Habit Coach. Get personalized advice, motivation, and insights about your habits and goals. Reminders: Set and receive timely reminders to ensure you never miss a day. Share Your Habits: Inspire and be inspired by sharing your habit streaks and results with friends and family. iCloud Sync: Seamlessly sync your data across all your devices. In-App Purchase Options: We offer two subscription models and a lifetime purchase option: USD $1.99 per month: Provides premium access to our app for 1 month. The renewal price remains the same. USD $19.99 per year: Provides premium access to our app for 1 year. The renewal price remains the same. USD $49.99 for lifetime access: This one-time purchase grants lifetime premium access to our app. Premium User Benefits: Unlimited habits Unlimited messages to the Habit Coach AI (terms apply) Free User Benefits: 1 active habit 3 messages to the Habit Coach AI For a detailed breakdown of our subscription options, including how to manage or cancel your subscription, please visit our Privacy Policy and Terms of Service pages: https://sites.google.com/vincentpeng.me/streaks66/privacy-policy https://sites.google.com/vincentpeng.me/streaks66/terms-conditions Take the first step towards a better you with Streaks 66 Habit Tracker, designed to make habit-building simple, effective, and fun. Download now and start your journey to a new you! ## Key features - 66-Day Habit Challenge - Customizable Difficulty Modes - AI Habit Coach - Timely Reminders - Share Progress - iCloud Sync ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Monthly Subscription | $1.99 | per month | | Premium Yearly Subscription | $19.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Premium Access | $44.99 | one-time | ## Frequently asked questions about Streaks 66 ### What is the 66-day challenge in Streaks 66? The 66-day challenge is a core feature of Streaks 66, based on the idea that it takes approximately 66 days to form a new habit. The app guides you through this period to help establish lasting routines. ### Does Streaks 66 offer different difficulty levels? Yes, Streaks 66 provides three difficulty modes: Perfect Mode for the disciplined, Normal Mode for a balanced approach, and Easy Mode for beginners starting their habit-building journey. ### How does the AI Habit Coach in Streaks 66 work? The AI Habit Coach offers personalized advice, motivation, and insights to help users stay on track with their habits and goals. Free users have a limited number of messages, while premium users have unlimited access. ### What are the benefits of the premium version of Streaks 66? Premium users of Streaks 66 gain benefits such as unlimited active habits, and unlimited messages to the Habit Coach AI. This allows for a more comprehensive and personalized habit-building experience. ### Can I sync my Streaks 66 data across devices? Yes, Streaks 66 supports iCloud Sync, allowing you to seamlessly sync your habit progress and data across all your Apple devices. ### What are the subscription options for Streaks 66? Streaks 66 offers a monthly subscription for $1.99, a yearly subscription for $19.99, and a one-time lifetime purchase option for $49.99, providing access to premium features. ### Is Streaks 66 available on Android devices? Based on the provided data, Streaks 66 is currently only supported on iPhones. There is no mention of Android compatibility in the application details. ### How often is Streaks 66 updated? Streaks 66 was last updated on August 15, 2024, with version 1.1.3. This indicates a recent update, suggesting ongoing development and support for the application. ## Version history (last 5 releases) ### 1.1.3 — 2024-08-15 • Minor bug fixes ### 1.1.2 — 2024-07-31 • Minor enhancements ### 1.1.1 — 2024-07-12 Fixed small bugs to improve usability and performance ### 1.1.0 — 2024-06-19 New feature: - Custom reminder message ### 1.0.5 — 2024-06-15 - Bug Fixes ## Apps similar to Streaks 66 | App | Rating | Price | Category | | --- | --- | --- | --- | | [Habits: Daily Progress Tracker](https://appshunter.io/ios/app/habits-daily-progress-tracker/id1569060484) | 4.5 (357) | Free | Productivity | | [Habit Tracker: Streaks & Goals](https://appshunter.io/ios/app/habit-tracker-streaks-and-goals/id6466580414) | 4.7 (152) | Free | Productivity | | [Habit-Bull: Daily Goal Planner](https://appshunter.io/ios/app/habit-bull-daily-goal-planner/id1041482672) | 4.7 (8,080) | Free | Productivity | | [Habit Tracker](https://appshunter.io/ios/app/habit-tracker/id1438388363) | 4.8 (142,156) | Free | Productivity | | [Grammar AI : Keyboard & Writer](https://appshunter.io/ios/app/grammar-ai-keyboard-and-writer/id6608966357) | — | Free | Productivity | | [StepBloc: Screen Time Blocker](https://appshunter.io/ios/app/stepbloc-screen-time-blocker/id6480580480) | 4.5 (365) | Free | Productivity | ## More apps by Jia Hui Peng - [Moment Widgets: Time Progress](https://appshunter.io/ios/app/moment-widgets-time-progress/id6757452590) - [OZ Mortgage Calculator](https://appshunter.io/ios/app/oz-mortgage-calculator/id6759816306) All apps by Jia Hui Peng: https://appshunter.io/developer/1064330286 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*