# One Life Diet — Block Counting Journal > Weight loss tracker using a proprietary Block System for simplified calorie and food composition analysis. (iPhone/iPad app by One Life Diet Inc.) - Source: https://appshunter.io/ios/app/one-life-diet/id1522400037 (this page in markdown: same URL + `.md`) - Developer: [One Life Diet Inc](https://appshunter.io/developer/579039107) - Category: Health & Fitness - Price: $4.99 - Rating: 3.50/5 from 4 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 54 MB - Languages: English - Released: 2021-05-04 - Data updated: 2026-09-03 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/one-life-diet/id1522400037/reviews.md ## What is One Life Diet? The One Life Diet app will transform the way you track calories. Not only will its unique and innovative system speed up your weight loss, it will also dramatically simplify the process. WHY NOT JUST COUNT CALORIES? To put it bluntly, the old-school belief that “a calorie is a calorie” is simply wrong. The reality is, carbohydrates cause you to gain weight faster than proteins or fats. When you treat all calories as equal, your weight loss is often not going to seem to make any sense – because your expectations are based on incorrect information. And if your diet is based on the belief that all calories are the same, it is going to make losing weight harder and slower than it should be. THE ONE LIFE BLOCK SYSTEM One Life’s Block System for counting calories is completely different from any other calorie counting app available. Using a proprietary system created by Jonathan Haynes, MD, the creator of THE ONE LIFE DIET, the One Life app assigns a Block count to each food based on its ratio of carbohydrates and calories to its protein, fat, and fiber content as well as the food's ability to satisfy hunger and to keep you full. The One Life Diet app allows you to accurately assess the true impact of a food on your weight, which allows you to make choices that will truly create weight loss. And when you can do that, weight loss stops feeling like a mystery and finally starts to make sense. CALORIE COUNTING MADE EASY Calorie counting is so inherently cumbersome, even with a great app it’s still a hassle. Calorie counting requires you to memorize two variables for every food: the serving size + the calorie count for that serving. One Life’s Block System greatly simplifies the process. We’ve categorized every food into one Block serving sizes, which means you only need to remember a single variable for each food – its serving size. Not to mention keeping track of 20 Blocks is a lot easier than trying to keep track of 1200 calories. WHAT CAN YOU DO WITH IT? Quickly and easily search the Block count of your food no matter where you are. Easily compare the Blocks of different foods to help you make better choices. Create and save your own custom foods to quickly access later. Make a personalized “favorites” list for quick and simple journaling. Search for “Free Foods” and “Carb-Free” options. Use the “quick add” feature to add Blocks when you don’t have time for the details. Track your daily exercise and your water intake. Automatically adds up your Blocks as you go. Tracks and automatically graphs your weight loss. Keep notes of your day to provide insight into your weight loss successes and failures. View your journal entries by the day, the week, or by custom dates. Easily print and email your food journal to others. PURPOSEFULLY LIMITED We don’t have the “3,000,000 food database” the other apps boast about. We aren’t trying to be an encyclopedia. What we want to be is a guide for the food you actually eat, and not the 2,999,000 that you don’t. ## Key features - Proprietary Block System for calorie tracking - Simplified food journaling with single variable serving sizes - Custom food creation and saving - Personalized favorites list - Exercise and water intake tracking - Automatic Block and weight graphing - Daily, weekly, and custom date journal viewing ## Chart rankings - #196 in Top Paid · Health & Fitness (US App Store) ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/one-life-diet/id1522400037/reviews.md ### 5/5 — Love this App *2023-05-09* This app has kept me on my healthy eating daily goals. I have used it everyday for the last 2 1/2 years. It has contributed to my diet lifestyle changes and kept my weight off. Easy to use and no excuses on why you can’t do this everyday. ### 5/5 — So glad finally out. *2021-06-22* Very easy to use and intuitive. Combined with the book, this makes tracking of my daily progress so much easier. Highly recommend this program in general. ### 3/5 — Good start but could be better *2021-05-25* It would be great if there was a way to enter a custom food only once and then be able to mark that custom food as a favorite and retrieve it when entering a meal (breakfast, lunch or dinner). ## Frequently asked questions about One Life Diet ### What is the One Life Diet Block System? The One Life Diet Block System assigns a Block count to each food based on its ratio of carbohydrates and calories to protein, fat, and fiber, as well as its ability to satisfy hunger. This differs from traditional calorie counting by considering food composition. ### How does One Life Diet simplify calorie counting? Instead of memorizing serving size and calorie count for each food, One Life Diet categorizes foods into one Block serving sizes. This means you only need to remember the serving size, making tracking much simpler. ### What kind of foods can I track with One Life Diet? You can search for the Block count of any food, compare different foods, create and save custom foods, and even search for 'Free Foods' and 'Carb-Free' options within the app. ### Does One Life Diet track exercise and water intake? Yes, the app allows you to track your daily exercise and water intake alongside your food journaling. This provides a more comprehensive view of your health and weight loss journey. ### How is One Life Diet's food database different from other apps? One Life Diet intentionally has a limited food database, focusing on its proprietary Block System rather than trying to be an encyclopedia of all foods. This is a purposeful limitation to simplify the user experience. ### Can I view my progress over time with One Life Diet? Yes, the app automatically graphs your weight loss and allows you to view your journal entries by day, week, or custom date ranges. You can also keep notes to gain insight into your successes and failures. ### What devices is One Life Diet available on? One Life Diet is available on iPhone, iPad, and iPod. It is designed for iOS devices. ### How often is One Life Diet updated? The latest version of One Life Diet is 2.1.1, which was last updated on January 23, 2025. Updates are released to improve functionality and add features. ## Version history (last 5 releases) ### 2.1.1 — 2025-01-23 Fixed minor bugs to improve app stability and performance. ### 2.1.0 — 2025-01-19 Major UI enhancements for a more modern and user-friendly experience. Introduced Dark and Light Themes for better accessibility and customization. Fixed various bugs to improve app performance and stability. ### 2.0.6 — 2024-09-15 We recently updated the add weight button so it can't be pressed multiple times and send multiple entries. Now doing the edit weight page as well to prevent multiple entries accidentally going through from pressing the button more than once. ### 2.0.4 — 2024-09-15 Fixed issue with app closing out when adding weight multiple times before processing. ### 2.0.2 — 2024-07-22 Minor updates in codebase and store hours updated. ## Apps similar to One Life Diet | App | Rating | Price | Category | | --- | --- | --- | --- | | [Pvolve Studios](https://appshunter.io/ios/app/pvolve-studios/id6447917024) | 5.0 (1,648) | Free | Health & Fitness | | [Breathe Degrees](https://appshunter.io/ios/app/breathe-degrees/id1579927236) | 5.0 (331) | Free | Health & Fitness | | [REVEL FIT CLUB](https://appshunter.io/ios/app/revel-fit-club/id1513434797) | 5.0 (420) | Free | Health & Fitness | | [SALTVAULT PILATES](https://appshunter.io/ios/app/saltvault-pilates/id6749019689) | 5.0 (11) | Free | Health & Fitness | | [YMCA San Diego](https://appshunter.io/ios/app/ymca-san-diego/id1415895811) | 2.3 (42) | Free | Health & Fitness | | [Lagree + Versa Fit](https://appshunter.io/ios/app/lagree-plus-versa-fit/id1606456094) | 5.0 (307) | Free | Health & Fitness | ## Related topics [onelife](https://appshunter.io/ios/topics/onelife) --- *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 2026-09-03.*