Scale Relay vs PaceVault
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Scale Relay
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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. 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.
PaceVault
Analyze your running history with best efforts, route matching, and lifetime trends. This private app provides insights into your personal records and wellness signals, all processed on your device.
- Best efforts and PR detection
- Route matching and ranking
- Year-over-year trend analysis
- Wellness signal tracking
- 100% on-device processing
- No account or cloud required
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Best-efforts records, matched routes, and lifetime trends — all on your iPhone, all private. PaceVault turns your fitness activity history into the analytics you've been missing. • Best efforts — every PR across every distance, auto-detected • Route matching — see every run of your favorite loop, ranked • Widgets! - Users have the option of six different widgets to show their activities on their iPhone homepage • Gear tracking — add your bikes and shoes and track their mileage automatically from your rides. Bikes support consumable parts with replacement reminders by distance or time. • Year-over-year trends across your whole history • Wellness signals gathered in one place — how you feel is yours to read • 100% on-device. No account, no cloud, nothing leaves your phone Free, forever. Every feature, for every user.
Screenshots
Verdict
The clearest difference is update cadence: PaceVault at every 2 days against Scale Relay's every 2 weeks. 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
Both are free to download. Scale Relay sells 1 one-off in-app purchase and PaceVault sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Scale Relay ships an update every 2 weeks, PaceVault every 2 days. Both last shipped on October 31, 2026.
| Parameter | Scale Relay | PaceVault |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcin Naglik | ZACHARY THOMAS MULLEN |
In-app purchases
Scale Relay
- Garmin Sync$14.99
PaceVault
- Small Tip$1.99
- Medium Tip$4.99
- Large Tip$9.99









