Weight Chart vs Weight Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Weight Chart
Track your weight and waist circumference with this app. It visualizes your progress on charts and helps you understand health risks associated with waist-to-height ratio, offering a more accurate measure than BMI.
- Monitor weight and waist circumference
- Visualize progress with charts
- Calculate waist-to-height ratio
- Enter and edit data for any date
- Email data for backup
- Switch between metric and imperial units
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Weight Chart helps to monitor your weight and waist circumference over time. Newer studies show that a waist to height ratio of over 0.5 increases the risk of cardiovascular diseases, a ratio over 0.6 significantly. It's a better measure than the well known body mass index (BMI) because it takes the distribution of fat into account more accurately. More Features: - chart weight, BMI and waist circumference to height ratio - enter and edit data for any date - E-Mail the data for backup - turn the phone to switch between chart and data entry - switch between metric and imperial units - support for iPhone 6, 6+ and iPhone X
Weight Diary
Track your weight loss journey with a clear trend line to visualize progress. Log daily weights, estimate loss rates, and plan for your goals. Supports custom start dates and integrates with health platforms.
- Daily weight logging
- Clear trend line visualization
- Progress and goal tracking
- Custom start date setting
- Apple Health and scale sync
- BMI and calorie calculators
- Data backup and export
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Understand your weight trends over time. Weight Diary helps you cut through daily fluctuations with a clear trend line, so you can quickly see whether you’re moving toward your goal. Log your weight each day to track your progress, estimate your rate of weight loss, and see how long it may take to reach your target. Starting a new diet or routine? Choose a custom start date to measure progress from any point that matters to you. With powerful graphs, goal planning tools, Apple Health support, and Withings/Fitbit scale sync, Weight Diary gives you a simple and effective way to stay on track. Main Features: • See your weight, progress, and goal remaining at a glance • Choose a custom start date for a new diet or milestone • Follow your daily weights with a clear trend line • Switch between the graph, summary, or full weight log with a single tap • Explore your progress over months or years in the full-screen graph • Record body fat % and add custom notes • Plan ahead with goal and calorie calculators • View your BMI with a clear visual display • Comprehensive unit support for pounds, kilograms, and stones • Sync with Apple Health and Withings/FitBit scales • Full data backup, import, and export
Screenshots
Verdict
The clearest difference is review sentiment: Weight Diary at 97% against Weight Chart's 29%. Weight Diary also leads on rating (4.9 vs 1.0) and ratings volume (2.6K vs 1). Weight Chart's advantage is price ($0.99 vs $7.99) and iOS requirement (12.0 vs 18.0). On update cadence, ads, in-app purchases and device support 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
Weight Chart costs $0.99 and Weight Diary $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Weight Diary holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Weight Diary has 2.6K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 29% of Weight Chart's written reviews are positive against 97% of Weight Diary's.
Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.
| Parameter | Weight Chart | Weight Diary |
|---|---|---|
| Price | $0.99 — better | $7.99 |
| Rating | 1.0 (1 ratings) | 4.9 (2.6K ratings) — better |
| Positive reviews | 28.6% of reviews | 96.7% of reviews — better |
| Number of ratings | 1 | 2.6K — better |
| Update frequency | Every 6 months | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | — | #55 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 2 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Piet Jonas | CURLYBRACE APPS LTD |
Customer experience
Weight Chart
Weight Diary
In-app purchases
Weight Chart
No in-app purchases
Weight Diary
No in-app purchases
Questions
Is Weight Chart free?
Is Weight Diary free?
Which has better reviews, Weight Chart or Weight Diary?
Do Weight Chart or Weight Diary have ads?
Which is updated more often, Weight Chart or Weight Diary?
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