FitTrace Sync vs Lettest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FitTrace Sync
This app helps you understand your DEXA body composition results. It offers AI-powered recommendations and connects you with human wellness professionals for personalized guidance. View detailed reports, integrate with Apple Health, and track over 200 variables.
- DEXA body composition insights
- AI Assistant for personalized recommendations
- Connect with Human Assistants
- Electronic scan transfer or manual entry
- Formatted reports with Apple Health integration
- Compare scans with athletes
- Track over 200 DEXA variables
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DEXA BODY COMPOSITION ANALYSIS A DEXA scan reveals your current body composition. FitTrace Sync provides insights beyond the raw numbers. UNDERSTAND YOUR RESULTS FitTrace Sync provides detailed DEXA analysis and insights. - See what your DEXA scan reveals about your health, fitness, and athletic performance. - Interactively track your body composition changes over time. - Compare your measurements with people of the same age. - Observe relationships between activity, nutrition and your DEXA body composition. - Compare body composition with athletes in over a dozen sports. - Printer-friendly reports are built in and may be printed directly from the app. PERSONALIZED RECOMMENDATIONS The AI Assistant uses your DEXA measurements to provide personalized guidance. You can also connect with a Human Assistant, such as a fitness or wellness professional, for individualized guidance. DEXA SCAN ACQUISITION Participating DEXA facilities deliver scans directly to your FitTrace account. Your DEXA scan data and images are securely transferred within minutes of your scan. Your prior scans may also be transferred. Ask your scanning facility whether it supports FitTrace. You can also enter measurements from printed DEXA body composition reports through an in-app purchase. Step-by-step instructions are provided in the app. CONNECT WITH APPLE HEALTH FitTrace Sync can also transfer DEXA measurements to Apple Health, including weight, body fat percentage, lean mass, and BMI. NOTE: FitTrace uses DEXA total mass as weight and for BMI calculations. Apple Health's lean body mass measurement corresponds to fat-free mass in FitTrace. Connect your DEXA measurements with Apple Health data to explore relationships between your habits and changes in body fat, lean mass, visceral fat, and other measurements. Observe how activity and nutrition correlate with your body composition. PREMIUM FEATURES Unlock additional insights and capabilities with a subscription: - Receive personalized guidance from the AI Assistant. - Explore relationships between Apple Health activity and nutrition data and DEXA body composition. - Track more than 200 DEXA-related measurements. - Compare your body composition with athletes across more than a dozen sports. - Share your scans with trainers, nutritionists, physicians, and other professionals. - View shared scans and add notes. MEDICAL DISCLAIMER FitTrace Sync is intended for informational, fitness, and general wellness purposes. It helps users understand and track their DEXA body composition measurements. FitTrace does not diagnose medical conditions or provide medical advice or treatment recommendations. Its insights are not a substitute for evaluation by a qualified healthcare professional. IN-APP PURCHASES Manual Scan Entry: $9.99 USD SUBSCRIPTIONS Monthly: $12.99 USD Annually: $34.99 USD LEGAL Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.fittrace.com/privacy-policy/
Lettest
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Lettest is a weight tracker that wants you to win. Open the app and you see one thing: an ambient, living orb that pulses in colour and rhythm to reflect how you're tracking against your goal. It's calming when you're on course, gently warm when you've drifted, and quietly fades when you've been away too long. No stickers, no streak guilt, no cluttered dashboards — just a feeling of how things are going, and a beautiful chart of how things have gone. Logging is one tap. Most days you won't even need to log: if you have a smart scale connected to Apple Health, your weights flow into Lettest automatically. When you do log manually, the entry sheet pre-fills to your last weight and saves with a satisfying haptic. Your data follows you between iPhone and iPad through iCloud — silently, with no setup. Whatever you log on one device shows up on the other. LETTEST IS DESIGNED TO BE QUIET • No notifications by default. The optional reminder only fires if you haven't logged by a time you choose. • No social features, no leaderboards, no coaching content trying to upsell you. • No analytics, no third-party SDKs. The only network calls Lettest makes are to iCloud and Apple Health, both Apple-native. A LIVING ORB FOR YOUR PROGRESS The orb breathes. Its colour, brightness, and pulse speed reflect how you're tracking against your goal: • Cool blue and steady when you're on course. • Bright cyan and faster when you're ahead. • Warm amber when you've drifted off course. • Dimmed when you've been away. GOALS THAT FIT YOUR LIFE Set a target weight, a target date, a weekly rate — any combination, all optional. If you've added your height, Lettest suggests a healthy target based on a BMI of 22 (mid-range of the WHO healthy band). You can accept it or set your own. PROFILE-AWARE With your height set, Lettest shows your healthy weight range (BMI 18.5–24.9) and uses it to suggest goals. The profile prefills from Apple Health if you've granted access, so you don't type anything you didn't have to. CHARTS THAT TELL THE STORY A clean Swift Charts trend with 7-day rolling average, a dashed goal line, and 1W / 1M / 3M / 1Y / All ranges. Drag along the chart to scrub a date readout. The Y-axis tightens around your data so subtle changes are visible. UNIVERSAL APP iPhone in portrait, iPad in a two-pane layout — orb on the left, chart and recent history on the right. Light and dark themes. Full VoiceOver and Dynamic Type support. PRIVACY-FIRST Lettest stores your data in your private iCloud database. No third party sees it. No analytics. The HealthKit integration only reads the body-mass and body-fat samples you authorize, and writes back the entries you log — nothing else. Your weight history is yours. REQUIREMENTS • iPhone or iPad running iOS / iPadOS 17 or later. • iCloud account (sign in to System Settings → iCloud) for sync. Without iCloud, Lettest stores everything locally and still works. • Apple Health (optional) for automatic weight import from smart scales. Lettest is a calmly-built tool for one quiet daily habit. Weigh in. Watch the orb. Repeat.
Screenshots
Verdict
The clearest difference is in-app purchases: Lettest at none against FitTrace Sync's 5. Lettest also leads on update cadence (weekly vs every 6 weeks). FitTrace Sync's advantage is iOS requirement (15.0 vs 17.0). On price, ads 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
Both are free to download. FitTrace Sync sells 5 in-app purchases, starting at $8.99 per month. Lettest asks for nothing beyond the download.
FitTrace Sync ships an update every 6 weeks, Lettest weekly. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.
| Parameter | FitTrace Sync | Lettest |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (9 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 47 MB | 2 MB |
| Age rating | 12+ | 4+ |
| Developer | FitTrace | Will Arentz |
In-app purchases
FitTrace Sync
- FitTrace Monthly Subscription$8.991 Month
- FitTrace Monhtly Subscription$12.991 Month
- FitTrace Annual Subscription$24.991 Year
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- FitTrace Annual Subscription$34.991 Year
- Manual Scan Entry$9.99
Lettest
No in-app purchases
Questions
Is FitTrace Sync free?
Is Lettest free?
Do FitTrace Sync or Lettest have ads?
Which is updated more often, FitTrace Sync or Lettest?
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