Comparison

Flutter vs ScaleTrack

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

Head to head
About

Flutter

Experience your heartbeat as a live haptic sensation on your wrist. Connect with loved ones by sharing real-time heartbeats, fostering a sense of presence and intimacy across any distance. Choose from various haptic styles for a personalized and calming experience.

Highlights
  • Live haptic heartbeat feedback on Apple Watch
  • Solo Sync for personal awareness
  • Partner Sync for sharing with others
  • Real-time BPM display
  • Multiple haptic pulse styles
  • Invite-based partner pairing
Features
Read full description

Flutter lets you feel a heartbeat directly on your wrist through Apple Watch. Designed for calm, focused awareness, Flutter turns heartbeat into a live haptic experience you can physically feel in real time. During a session, Flutter reads heart rate, displays BPM clearly, and translates each beat into a precise pulse on your wrist. Different haptic styles let you choose the sensation that feels most comfortable or meaningful. Flutter includes Solo Sync for personal heartbeat awareness and Partner Sync for sharing live heartbeats with someone you care about. Couples, friends, and family can connect through invite-based sessions and experience real-time heartbeats together, creating a simple and intimate way to stay connected across any distance. Sessions are easy to start and stop, with a minimal interface designed to stay out of the way and keep attention on rhythm, presence, and connection. Features • Solo Sync for personal heartbeat awareness • Partner Sync for sharing live heartbeats with another person • Real-time heart rate (BPM) display • Live haptic heartbeat feedback on Apple Watch • Multiple haptic pulse styles • Invite-based partner pairing • Minimal, distraction-free interface • Account deletion from the Profile screen Flutter is a quiet, modern way to feel rhythm, presence, and connection. • Privacy Policy: https://flutter.cyberian.tech/privacy.html • Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ScaleTrack

Features
Read full description

Track your weight in two seconds: just snap a photo of your scale. ScaleTrack reads the number off any scale's display, right on your iPhone. Confirm it, and it's saved and charted. It works with the scale you already own: if it shows a number, ScaleTrack reads it. WHY SCALETRACK • Works with any scale: point, snap, done. • Two-second weigh-ins: snap → confirm → saved. • A clean trend chart from your very first reading. • Prefer typing? Log with the keyboard any time. SEE PROGRESS, NOT NOISE • A smoothed trend line shows your true direction through daily ups and downs. • Weekly pace, a projected goal date, and a "what will I weigh by then?" picker. • Milestones on the way to your goal, badges for showing up, streaks that add up. • Your year in review, plus a shareable PDF report. • Switch lb ⇄ kg anytime. Export to CSV whenever you want. MORE THAN THE SCALE • Add a note, tags, or how you felt to any weigh-in. • BMI at a glance once you set your height. • Track body fat percentage and waist alongside weight, synced with Apple Health. • Optional progress photos with a lineup guide and side-by-side compare, stored on your device, seen only by you. MAKE IT YOURS • Dark mode: the new Ink palette, easy on late-night weigh-ins. • Home Screen, Lock Screen and Control Center shortcuts; Siri and the Action button too. • Optional daily reminder and a Sunday weekly summary. PRIVATE BY DESIGN • Your data lives on your iPhone and, only if you turn it on, in your own private iCloud. • Scale photos are read on-device with Apple's built-in text recognition, then discarded. • Progress photos stay on your device, for your eyes only. • Back up and restore your data yourself, any time. Just you and the number, over time.

Screenshots

Flutter4 screens
ScaleTrack4 screens

Verdict

The call

The clearest difference is in-app purchases: ScaleTrack at none against Flutter's 3. On price, update cadence, 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. Flutter sells 3 in-app purchases, starting at $14.99 per month. ScaleTrack asks for nothing beyond the download.

UpkeepUpdate frequency

Flutter ships an update every 3 weeks, ScaleTrack fortnightly. Both last shipped on October 9, 2026.

Scorecard1 real difference · 9 level
Flutter versus ScaleTrack: the parameters behind the verdict, then further details
ParameterFlutterScaleTrack
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS17.617.0 — better
Further details — not scored
Size21 MB14 MB
Age rating4+4+
DeveloperCYBERIAN TECHNOLOGIES LLCGAGAN BHATTARAI

In-app purchases

3 purchases

Flutter

Subscriptions3
  • Partner Sync (Monthly)7 Days trial$14.991 Month
  • Partner Sync Quarterly7 Days trial$39.993 Months
  • Partner Sync Annual7 Days trial$119.991 Year
None

ScaleTrack

No in-app purchases

Questions

Is Flutter free?
Flutter is free to download, with in-app purchases available.
Is ScaleTrack free?
ScaleTrack is free to download, with no in-app purchases.
Do Flutter or ScaleTrack have ads?
Neither Flutter nor ScaleTrack shows ads.
Which is updated more often, Flutter or ScaleTrack?
Flutter ships an update every 3 weeks, and ScaleTrack fortnightly. Most recently, Flutter was updated on October 9, 2026 and ScaleTrack on October 9, 2026.

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