Comparison

Trendscale vs WeighCast

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

WeighCast

Read full description

The hardest part of managing your weight is not knowing when it ends. WeighCast reads your weigh-ins from Apple Health, follows the trend underneath the daily noise, and estimates when you'll reach the target you set — as a range of dates. WHAT IT DOES • Reads your weight history from Apple Health, or lets you add weigh-ins by hand • Fits a trend that ignores the day-to-day swings of water, food and salt • Forecasts when you'll reach your target — always a range, because a single date would be pretending • Marks the milestones along the way • Shows how your rate has changed month by month • Notices when your trend genuinely changes course, and offers to forecast from there • Optionally shows where the healthy BMI range sits for your height • Exports a clean PDF summary Whether you're losing, maintaining or gaining, WeighCast treats your goal the same way: calmly. Gaining is supported deliberately — for people recovering from illness, restoring weight, or gaining on medical advice. WHAT IT WON'T DO No streaks. No badges. No red numbers. No "you could get there faster". Your weight swings day to day — that's water, not failure — so WeighCast never scores you against yesterday, only shows you the trend. A flat week is shown as a flat week, not a defeat. It won't accept a target below the healthy weight range for your height. And it isn't medical advice — if you have a health condition, talk to your doctor before changing how you eat. HONEST ABOUT UNCERTAINTY Your forecast will move as new weigh-ins arrive — sometimes by weeks. That's the estimate improving, not you failing. WeighCast needs about three weeks of weigh-ins before it can show a date at all, and it says so plainly rather than guessing. YOUR DATA STAYS YOURS Everything happens on your phone. No accounts, no servers, no analytics, no tracking. The only things ever written to Apple Health are weigh-ins and a height you typed yourself. Free to use, with no adverts — there never will be. WeighCast works best with a smart scale that syncs to Apple Health — the more often you weigh in, the sooner you see a date — but manual entry works fine too.

Screenshots

Trendscale4 screens
WeighCast4 screens

Verdict

The call

The clearest difference is in-app purchases: WeighCast at none against Trendscale's 4. Trendscale's advantage is update cadence (daily vs every 4 days) and iOS requirement (15.1 vs 26.5). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Trendscale sells 4 in-app purchases, starting at $2.99 per month. WeighCast asks for nothing beyond the download.

UpkeepUpdate frequency

Trendscale ships an update daily, WeighCast every 4 days. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 7 level
Trendscale versus WeighCast: the parameters behind the verdict, then further details
ParameterTrendscaleWeighCast
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyDaily — betterEvery 4 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better26.5
Further details — not scored
Size42 MB2 MB
Age rating4+17+
DeveloperGustavo ChavesBenjamin Skelly

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
None

WeighCast

No in-app purchases

Questions

Is Trendscale free?
Trendscale is free to download, with in-app purchases available.
Is WeighCast free?
WeighCast is free to download, with no in-app purchases.
Do Trendscale or WeighCast have ads?
Neither Trendscale nor WeighCast shows ads.
Which is updated more often, Trendscale or WeighCast?
Trendscale ships an update daily, and WeighCast every 4 days. Most recently, Trendscale was updated on October 12, 2026 and WeighCast on October 9, 2026.

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