SmartDiet vs Weight Log
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartDiet
Easily track your weight, body fat percentage, and add notes daily. Visualize your progress with clear graphs and customize your logging experience. Includes privacy features and backup options.
- Daily weight and body fat logging
- Quick entry after launch
- Clear, flexible graphs
- Notes and stamps for logging
- Passcode lock with biometric support
- Backup and device transfer
- Apple Health integration
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SmartDiet is a simple weight tracker that turns daily weight records into clear graphs and calendars, so you can see your progress at a glance. No account or sign-up required. All data is stored locally for fast, secure, offline use. Log once a day. That's it. Use it as a weight diary alongside any diet or fitness plan, or to track weight gain and bulking. □■Key Features • Quick entry right after launch • Record weight, body fat %, notes, and stamps • Simple, powerful graphs (1 week to 3 years) • BMI calculation • Calendar view • Goal weight setting • Write data to Apple Health • Passcode lock (Touch ID / Face ID supported) • Free backup & device transfer • 24+ theme colors (all colors with Premium) • Reminder notifications for daily logging • Lock Screen widgets (calendar / quick add button) • Weight in kg or lb (pounds), height in inches • Excel and PDF export, printing (Premium) • Works on iPhone and iPad □■Recommended For • Anyone tired of complicated diet apps • Anyone who finds calorie counting or food logging hard to keep up • People who just want to record their weight and see the change • Anyone who wants motivation from visible progress • Anyone avoiding monthly subscription fees SmartDiet keeps daily logging so simple that the habit sticks, whether your goal is weight loss, weight gain, or everyday health. □■Why It's Easy to Keep Going Quick Input Flow • The keyboard appears automatically when the app opens • After you enter weight, the input advances to body fat % automatically • Enter decimals without typing the decimal point Customize What You Record • Log only weight, or add body fat %, notes, and stamps • One-tap stamps for your day: Good / Bad / Overate / Drinking Party / Bathroom / Exercise / Star • Notes are free-form: use them for meals, workouts, body measurements like waist or hips, and morning or evening weigh-ins Flexible Graphs • Switch ranges: 1 week / 1 month / 3 months / 1 year / 3 years • Pinch to zoom in and out • Tap a point to view BMI and that day's data • Edit or delete entries directly from the graph Calendar & Goal Weight • Check your records in a calendar view • Set a goal weight and track your progress toward it Privacy with Passcode Lock • Protect personal data with a passcode, free to use • Supports Touch ID and Face ID Backup & Data Transfer • Export all records as CSV files you can also open on a computer • Move data when switching iPhones or using an iPad Apple Health Integration • Enable it in Settings, and weight, body fat %, and BMI are written to Apple Health automatically • Apple Health data cannot be imported into this app Theme Colors • 24+ theme colors, from cool to cute styles • Some are free; Premium unlocks all colors and app icons Lock Screen Widgets • Put a calendar or a quick add button on your Lock Screen • Open the input screen with a single tap □■Premium Service Premium unlocks: • Remove ads • All theme colors • All app icons • Excel and PDF export, printing • Priority support Premium is a one-time purchase, not a subscription. There is no monthly fee and no free trial. Buy once, and use it on both iPhone and iPad with the same Apple Account. After changing devices, tap Restore to keep Premium at no extra cost. The app stays free, so upgrade only if you need it. Moving your data to a new device is also free. □■About This App SmartDiet is a simple, free weight tracker for everyone working on weight loss, weight gain, and everyday health. Unlike complex diet apps built around calorie counting, meal plans, or workout programs, SmartDiet keeps only the essentials, so daily logging stays fast and easy. Note: there is no calorie counter, no meal planning, no workout coaching, no Apple Watch app, and no step counter. SmartDiet focuses on one simple job: recording your weight and showing how it changes. Terms of Use https://komorebi-studio.com/tos_en.html Privacy Policy https://komorebi-studio.com/policyredirect.html
Weight Log
Easily track your weight progress with a clean interface. Visualize your journey with intuitive graphs, monitor monthly progress, and set achievable goals. Premium features include BMI calculation and daily notes.
- Intuitive weight graph
- Monthly progress history
- Goal weight setting
- BMI calculation (premium)
- Daily notes (premium)
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We make tracking your weight easy because losing it should be the hardest part. We've taken a minimalist approach when developing and designing Weight Log, so you will find that there is little to no clutter with the interface and experience. Every element has been carefully chosen to provide you the most optimal experience when using the app. We are certain that utilizing Weight Log will provide you a simple weight tracking solution you've been always looking for. Check out some of the features that we offer below. Weight Graph: We offer an intuitive weight graph that will display your progress from start to finish, so you will be able to see your overall progress through your entire weight loss journey. History: In addition to showing your weight progress per day, we also organize the months of each year so you can see how much you've lost for each month. Goal Weight: Setting your goal weight is a great way to keep on track. We make that process easy by allowing you to set your goal weight, and we'll let you know your overall progress of reaching the weight. BMI: Accessing your BMI can really enlighten you to a particular category of where you stand in regards to your current weight. We offer this feature as a part of our premium upgrade. Notes: If you would like to add notes to a particular weight day for you to remember anything related to that particular day that you weighed in, we'll allow you to do this. We offer this feature as a part of our premium upgrade. We hope that we can have the privilege of being a part of your weight loss journey. Stay cool, and love yourself. You will get to where you're going if you never give up.
Screenshots
Verdict
The clearest difference is ads: Weight Log at none against SmartDiet's shown. Weight Log also leads on iOS requirement (13.0 vs 15.0). SmartDiet's advantage is review sentiment (76% vs 43%) and update cadence (every 2 months vs every 10 months). On price, rating, in-app purchases and monetization model 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
Both are free to download. SmartDiet sells 2 one-off in-app purchases and Weight Log sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for SmartDiet against 4.8 for Weight Log. Both are backed by a comparable volume of ratings — 208 and 60 respectively. Written reviews are what separate them: 76% of SmartDiet's written reviews are positive against 43% of Weight Log's.
SmartDiet ships an update every 2 months, Weight Log every 10 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | SmartDiet | Weight Log |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (208 ratings) — better | 4.8 (60 ratings) |
| Positive reviews | 76.0% of reviews — better | 42.9% of reviews |
| Number of ratings | 208 — better | 60 |
| Update frequency | Every 2 months — better | Every 10 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 156 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Komorebi Inc. | justncode LLC |
Customer experience
SmartDiet
Weight Log
In-app purchases
SmartDiet
- Remove Ads$6.99
- Premium Service$9.99
Weight Log
- Weight Log Premium$4.99









