Comparison

RestOrTrain vs Scale Relay

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

Head to head
About

RestOrTrain

This app uses AI to analyze your cycling training data, from individual workouts to your entire fitness history. It helps optimize your training plans based on your performance and recovery.

Highlights
  • AI-driven training analysis
  • Individual activity tracking
  • Fitness history evaluation
  • Personalized training optimization
  • Performance and recovery insights
Features
Read full description

AI that thinks about your training, from individual activities to your entire fitness history. Terms of Use: https://restortrain.com/terms Privacy Policy: https://restortrain.com/privacy

About

Scale Relay

Read 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. 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

RestOrTrain4 screens
Scale Relay4 screens

Verdict

The call

The clearest difference is ads: Scale Relay at none against RestOrTrain's shown. RestOrTrain's advantage is update cadence (every 4 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement 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. RestOrTrain sells 6 in-app purchases, starting at $14.99 per month and Scale Relay sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

RestOrTrain ships an update every 4 days, Scale Relay every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
RestOrTrain versus Scale Relay: the parameters behind the verdict, then further details
ParameterRestOrTrainScale Relay
PriceFreeFree
Rating4.8 (682 ratings) — better—
Positive reviews62.1% of reviews—
Number of ratings682 — better—
Update frequencyEvery 4 days — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size32 MB2 MB
Age rating12+4+
DeveloperRESTORTRAIN SP Z O OMarcin Naglik

In-app purchases

6 purchases

RestOrTrain

Subscriptions6
  • PRO Monthly1 Month trial$14.991 Month
  • PRO Monthly$14.991 Month
  • PRO Monthly7 Days trial$14.991 Month
Show 3 more
  • PRO Annual1 Month trial$134.991 Year
  • PRO Annual$134.991 Year
  • PRO Annual7 Days trial$134.991 Year
1 purchases

Scale Relay

One-time1
  • Garmin Sync$14.99

Questions

Is RestOrTrain free?
RestOrTrain is free to download, with in-app purchases available.
Is Scale Relay free?
Scale Relay is free to download, with in-app purchases available.
Do RestOrTrain or Scale Relay have ads?
RestOrTrain shows ads; Scale Relay does not.
Which is updated more often, RestOrTrain or Scale Relay?
RestOrTrain ships an update every 4 days, and Scale Relay every 2 weeks. Most recently, RestOrTrain was updated on October 30, 2026 and Scale Relay on October 31, 2026.

Other comparisons