WeightSyncr vs Scale Relay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WeightSyncr
Effortlessly sync your weight data from Apple Health to Garmin Connect. Supports any scale that writes to Apple Health, offering automatic or on-demand synchronization. Keep your fitness profile current with minimal effort.
- Universal scale support via Apple Health
- Automatic and manual weight syncing
- Sync past weight entries
- Two-factor authentication for Garmin
- Privacy-focused data handling
Read full descriptionHide full description
WeightSyncr: Sync Apple Health Weight to Garmin Connect WeightSyncr helps you keep Garmin Connect up to date with your weight data from Apple Health, automatically or on demand. Use any scale that writes to Apple Health and keep everything in sync. Key Features • Universal Scale Support – Works with any scale that writes to Apple Health • Sync Past Entries (Premium) – Sync historical weigh-ins by date range • Auto-Sync (Premium) – Automatically sync new entries • Manual Sync – Sync individual weights with one tap • Two-Factor Authentication – Full support for Garmin accounts with 2FA • Privacy First – Your data stays on your device Why WeightSyncr? • Save Time – Avoid repetitive manual entry • Reliable Syncing – Keep your Garmin profile current with less effort • Flexible Setup – Works whether you use a smart scale or log in Apple Health manually • Built for Real Use – Great for athletes and everyday health tracking Try Premium free for 7 days to unlock Auto-Sync and Sync Past Entries. By downloading or using this app, you agree to the Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Scale Relay
Seamlessly transfer your smart scale data to Garmin Connect. Supports scales that write to Apple Health or directly syncs with select Xiaomi models via Bluetooth. Offers a preview before syncing and includes body composition metrics.
- Syncs weight and body composition to Garmin Connect
- Supports scales writing to Apple Health
- Direct Bluetooth sync for Xiaomi scales
- Preview weigh-ins before syncing
- Shortcuts integration for automations
- One-time purchase for unlimited syncing
Read full descriptionHide full description
Get your smart scale's weigh-ins into Garmin Connect, straight from your iPhone. Two ways in, one tap out. APPLE HEALTH ROUTE: ANY SCALE If your scale's app saves weight to the Health app, Scale Relay picks it up and sends it to Garmin Connect. Works with Withings, Renpho, Eufy, Etekcity, Zepp Life, Wyze, Picooc and any other app that writes weight to Apple Health. Note: Withings accounts created on or after 13 October 2026 need Withings+ before the Withings app shares data with Apple Health. Body fat and BMI come along when your scale's app provides them. With the Sync to Garmin action in Shortcuts, an automation can send new weigh-ins without opening the app. BLUETOOTH ROUTE: XIAOMI SCALES, NO OTHER APP NEEDED Step on a Mi Body Composition Scale 2 or a Xiaomi Body Composition Scale S400 and Scale Relay reads the measurement directly: weight, body fat, muscle mass, bone mass, water, BMI and BMR. It can also save each weigh-in to Apple Health. The S400 needs a one-time authorization with your Xiaomi account. WHAT YOU GET • A preview of every weigh-in before it is sent; nothing leaves without your tap or your Shortcut • Body composition in Garmin Connect, not just the weight • Bluetooth weigh-ins saved to Apple Health too, if you turn it on • A Sync to Garmin action for Shortcuts and automations • Weigh-ins from the last 7 days are included; Garmin Sync unlocks older history • One Garmin sign-in, two-factor authentication supported • A "Sent to Garmin" list so you know what arrived FREE TO TRY Your first two syncs are free on either route. Unlimited syncing is a single one-time purchase called Garmin Sync. No subscription. PRIVACY FIRST Your measurements stay on your iPhone and go only to your own Garmin account and, if you choose, to Apple Health. No Scale Relay account, no tracking, no ads. REQUIREMENTS • iOS 17 or later • A Garmin Connect account • Apple Health route: any scale app that writes weight to the Health app • Bluetooth route: Mi Body Composition Scale 2 or Xiaomi Body Composition Scale S400 Scale Relay is an independent app. It is not affiliated with, endorsed by or associated with Garmin, Xiaomi, Withings, Renpho, Eufy, Etekcity, Zepp, Wyze, Picooc or any other scale or fitness-platform maker. Product names are trademarks of their respective owners.
Screenshots
Verdict
The clearest difference is rating: Scale Relay at 5.0 against WeightSyncr's 4.5. Scale Relay also leads on update cadence (every 10 days vs every 2 months). WeightSyncr's advantage is ratings volume (15 vs 1). On price, ads, in-app purchases and monetization model 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. WeightSyncr sells 2 in-app purchases, starting at $0.99 per month and Scale Relay sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Scale Relay holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: WeightSyncr has 15 ratings behind it against 1, so its average is the more settled of the two.
WeightSyncr ships an update every 2 months, Scale Relay every 10 days. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.
| Parameter | WeightSyncr | Scale Relay |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (15 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 15 — better | 1 |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Jessica Raz Gabrielzyk | Marcin Naglik |
Customer experience
WeightSyncr
Scale Relay
In-app purchases
WeightSyncr
- WeightSyncr Premium (Monthly)7 Days trial$0.991 Month
- WeightSyncr Premium (Annual)7 Days trial$6.991 Year
Scale Relay
- Garmin Sync$14.99








