Comparison

Trendscale vs LightYet

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Trendscale

This app helps you track your weight progress without calorie counting. It uses your daily weight entries to show your real trend and estimate your energy balance. Set goals, view your progress on a dashboard, and manage your history easily.

Highlights
  • Weight trend analysis
  • Estimated energy balance
  • Goal setting and projection
  • Daily dashboard view
  • Logbook history
  • Data import/export
  • On-device privacy
Features
Read full description

Trendscale is the simplest, most effective weight tracker for people who are tired of counting calories and macros. Step on the scale, log your weight, and let Trendscale show you what's actually happening. No food logging. No barcode scanning. No stressing about every bite when you're out with friends. Just one number a day - and a clear picture of your progress. --- TREND WEIGHT Your daily weight fluctuates. Trendscale smooths out the noise using an exponential moving average, so you see your real trajectory - not random changes. ENERGY BALANCE We estimate your weekly caloric surplus or deficit from your weight trend alone. No food diary needed. GOALS Set a target to lose, gain, or maintain. See your projected end date, track your weekly rate, and adjust as you go with intuitive eating. DASHBOARD Everything you need on one screen: today's weight, your trend, a 14-day log grid, and weekly stats. Clean, fast, focused. LOGBOOK Browse your full history month by month. Tap any day to edit or add a past entry. IMPORT AND EXPORT Switching from another app? Import your CSV data. Want a backup? Export anytime. PRIVACY FOCUSED All your data stays on your device. No sign-in. No servers. No cloud. --- Terms of Use: https://trendscale.app/terms Privacy Policy: https://trendscale.app/privacy

About

LightYet

Features
Read full description

TRACK WEIGHT. FOLLOW BODY FAT. LOG FOOD FASTER. LightYet helps you keep weight, body fat, meals, calorie estimates, and progress photos in one private diary. Take a food photo or describe what you ate, review the AI-estimated calories, and edit your meal record before saving. No account is required. No ads or third-party analytics. WEIGHT & BODY-FAT TRACKER - Log weight in kg or lb - Record body-fat percentage and personal notes - Follow 7-day, 30-day, and 90-day trends - Use moving averages to understand the broader trend - Estimate progress toward your target weight - Check BMI using international and regional reference standards - Import weight, body fat, and height from Apple Health - Write new LightYet records to Apple Health when enabled AI MEAL SUPPORT - Take a photo of a meal or describe what you ate by text or voice - Get an AI estimate of the foods, portions, and calories - Ask about ingredients, portions, combinations, preparation, or eating out - Review and edit the estimate before saving it to your meal diary - Add or edit meals manually whenever you prefer AI NUTRITION PLAN Answer 10 questions about your goals, schedule, food preferences, activity, and challenges. LightYet creates a flexible 7- or 15-day nutrition plan with an estimated daily calorie target, meal guidance, food examples, calorie ranges, and photo tips. Follow the plan at your own pace, ask about a meal, and adjust it to real life. AI WELLNESS Q&A & BODY-TREND REVIEW Ask practical questions about food, calories, training, recovery, weight, or body-fat trends. LightYet uses the context you choose to share to provide a focused answer and useful follow-up questions. Bring recent meal records together with your 7-day and 30-day weight trends. Get a clear summary and one practical next step instead of reacting to a single meal or weigh-in. VISUAL PROGRESS DIARY Add progress photos, browse your timeline, and compare two dates side by side. See changes that the scale may not show clearly. MORE WAYS TO STAY CONSISTENT - Build a daily logging streak and unlock achievements - Set daily reminders when you want a gentle nudge - Read a built-in nutrition science guide - View weight, calorie, body-fat, goal, streak, dashboard, and calendar summaries with Home Screen widgets - Export or import weight data as CSV and archive progress photos when needed LIGHTYET PRO Unlock every day in your 7- or 15-day nutrition plan, expanded AI meal support and wellness guidance, unlimited progress photos, optional iCloud sync, and additional widgets for body fat, calories, dashboards, and the weight calendar. Monthly, yearly, and lifetime purchase options may be available in your region. PRIVACY WITH CLEAR CHOICES Your core records and progress photos remain under your control. LightYet does not require an account and contains no advertising or third-party analytics SDKs. Non-AI records are stored on your device. If you enable iCloud sync, supported data is stored in your private iCloud container. AI features are optional. Only after you agree and request an AI feature, selected information needed for that request may be sent to LightYet's AI processing service. Depending on the feature, this may include a meal photo or description, your question, and relevant profile, weight, body-fat, or calorie summaries. Progress photos are not included in AI body trend reviews. AI estimates can be inaccurate and should be reviewed before saving. Nutrition targets are planning estimates, not medical prescriptions. LightYet is not a medical device and does not replace professional medical advice. Privacy Policy: https://sunheihei.github.io/app-policie/lightyet_privacy.html Terms of Use: https://sunheihei.github.io/app-policie/lightyet_terms.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download LightYet and turn everyday records into a clearer picture of your progress.

Screenshots

Trendscale4 screens
LightYet4 screens

Verdict

The call

The clearest difference is update cadence: Trendscale at daily against LightYet's every 5 days. Trendscale also leads on iOS requirement (15.1 vs 17.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Trendscale sells 4 in-app purchases, starting at $2.99 per month and LightYet sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Trendscale ships an update daily, LightYet every 5 days. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Trendscale versus LightYet: the parameters behind the verdict, then further details
ParameterTrendscaleLightYet
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyDaily — betterEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size42 MB39 MB
Age rating4+4+
DeveloperGustavo Chaves依欢 孙

In-app purchases

4 purchases

Trendscale

Subscriptions4
  • Trendscale Pro$2.991 Month
  • Trendscale Pro14 Days trial$2.991 Month
  • Trendscale Pro$19.991 Year
Show 1 more
  • Trendscale Pro14 Days trial$19.991 Year
3 purchases

LightYet

Subscriptions2
  • Monthly$2.991 Month
  • Yearly$19.991 Year
One-time1
  • LightYet-Lifetime$39.99

Questions

Is Trendscale free?
Trendscale is free to download, with in-app purchases available.
Is LightYet free?
LightYet is free to download, with in-app purchases available.
Do Trendscale or LightYet have ads?
Neither Trendscale nor LightYet shows ads.
Which is updated more often, Trendscale or LightYet?
Trendscale ships an update daily, and LightYet every 5 days. Most recently, Trendscale was updated on October 12, 2026 and LightYet on October 7, 2026.

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