Comparison

Garmin Connect™ vs 4iiii

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

Head to head
About

Garmin Connect™

Track your health and fitness activities with detailed statistics and personalized insights. Create custom workouts, build courses, and challenge friends. Syncs with compatible devices and other popular fitness apps.

Highlights
  • Activity tracking and health metrics
  • Detailed statistics analysis
  • Custom workout and course creation
  • Personalized home screen
  • Earn achievement badges
  • Sync with other apps
Read full description

The Garmin Connect™ app is your one-stop source for health and fitness data. Whether you’re training for a race, keeping active or just staying on top of your health, Garmin Connect provides the information and inspiration you need to reach your goals. Once you pair your phone(1)with a Forerunner®, Venu®, fēnix® or another compatible Garmin device(2), you can review your tracked activities and health metrics. Plus, you can create workouts, build courses and challenge your friends on the leaderboard. With Garmin Connect you can: - Personalize your home screen, so the most helpful information is instantly visible - Analyze your activities with detailed statistics(3) - Create customized workouts and courses - Review trends in health metrics like heart rate and steps - Earn badges for accomplishments - Sync with other apps like Apple Health, MyFitnessPal and Strava - Get support for Garmin devices and their features Learn more about Garmin devices and how they work with the Garmin Connect app at Garmin.com. (1) See compatibility requirements at Garmin.com/BLE (2) See a full list of compatible devices at Garmin.com/devices (3) See Garmin.com/ataccuracy Note: Continued use of GPS running in the background can dramatically decrease battery life.

About

4iiii

Connect and configure your 4iiii power meters and heart rate monitors. Record workout data, update device firmware, and even turn your Apple Watch into a cycling head unit. Track power, cadence, heart rate, and more while riding.

Highlights
  • Connects to power meters and heart rate monitors
  • Records workout data (power, heart rate, cadence, etc.)
  • Performs zero offset and firmware updates
  • Apple Watch cycling head unit functionality
  • Auto-syncs to Strava
  • Locates power meters with Finder Feature
Features
Read full description

The 4iiii app is a valuable tool to get the most out of the features of your 4iiii products and achieve your fitness goals. Using the app, you can connect to your 4iiii power meter (PRECISION 3/3+ models) and your Viiiiva heart rate monitor to both configure and update them. You can record workout data to FIT file format to be later uploaded to your favourite training software. The companion Ride Watch app turns your Apple Watch into a cycling head unit. View power, cadence, heart rate, speed, distance, live while riding. Ride records your workout data to FIT file, and to Apple Fitness for closing your rings. Auto-sync to Strava keeps your activity feed up-to-date on completion of every outdoor or indoor cycling workout. Multi-language: English, Deutsch, Nederlands, français, italiano, にほんご, español. Features include: 4iiii app Supported devices: 4iiii Powermeters, Viiiiva heart rate monitors Record workout data (heart rate, power, cadence, pace, speed, distance, time, laps, calories) Manage stored FIT files, upload to Strava 4iiii Power meters Personalize your device name Pair and unpair dual powermeters Perform zero offset Easy over-the-air firmware updates Note: Available for iOS only (supports only iOS version 17.6 or higher)

Screenshots

Garmin Connect™4 screens
4iiii3 screens

Verdict

The call

The clearest difference is update cadence: Garmin Connect™ at every 2 weeks against 4iiii's every 3 months. Garmin Connect™ also leads on review sentiment (39% vs 11%) and monetization model (free vs free with in-app purchases). 4iiii's advantage is device support (3 vs 1). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Garmin Connect™ ships an update every 2 weeks, 4iiii every 3 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard5 real differences · 6 level
Garmin Connect™ versus 4iiii: the parameters behind the verdict, then further details
ParameterGarmin Connect™4iiii
PriceFreeFree
Rating4.4 (59K ratings) — better—
Positive reviews39.0% of reviews — better10.9% of reviews
Number of ratings59K — better—
Update frequencyEvery 2 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
Best chart rank#19 — better—
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS18.217.6 — better
Further details — not scored
Size693 MB70 MB
Age rating4+4+
DeveloperGarmin4iiii Innovations Inc.

Customer experience

Garmin Connect™

All ratings58,646 ratings
Positive85.7%
Neutral2.7%
Negative11.6%
Written reviews5,030 reviews
Positive39.0%
Neutral11.9%
Negative49.1%

4iiii

Written reviews156 reviews
Positive10.9%
Neutral5.8%
Negative83.3%

User reviews

Garmin Connect™

From 59K App Store ratings

What we love

  • 🚀 Excellent tracking and data analysis
  • 👍 Great motivational features
  • 🚀 Seamless syncing with devices
  • 👍 Comprehensive fitness metrics
  • 🚀 Intuitive and user-friendly app

Room to improve

  • 🐛 Connectivity issues and sync problems
  • 🐛 Buggy app updates and loss of functionality
  • 🐛 Inaccurate sleep and activity tracking
  • 🔋 Drains device battery quickly
  • 🐛 Confusing and cluttered user interface

4iiii

From App Store reviews

What we love

  • ✅ Firmware updates work smoothly when functioning
  • 🔋 Battery status display
  • ⚙️ Zero offset calibration functionality
  • 🎯 Successfully pairs with power meters (when working)
  • 📱 Simple and straightforward UI for basic functions

Room to improve

  • 🐛 Cannot detect multiple power meters simultaneously
  • 🐛 Frequent connection failures and disconnections
  • 🐛 App crashes and freezes regularly
  • 🐛 Data fields clear themselves unexpectedly
  • 🐛 Firmware updates fail mid-process

Bugs and requests

Garmin Connect™

Reported bugs

5 issues
  • App constantly requiring device setup
  • Weather data not syncing correctly
  • Workout data not recording properly
  • Inconsistent performance across iOS versions
  • Inability to edit or customize activities

Requested features

5 requests
  • Customizable sleep tracking and goal settings
  • Better integration with third-party apps
  • Improved offline functionality
  • More detailed workout analysis and planning
  • Enhanced social features and challenges

4iiii

Reported bugs

21 issues
  • Cannot pair multiple power meters - only recognizes one at a time
  • App fails to detect power meters that other apps find easily (Garmin, Wahoo)
  • Dual-sided power meter only shows one side (usually left)
  • Firmware update failures brick power meters permanently
  • Login credentials not accepted despite being correct
Show 16 more
  • Password reset emails never arrive
  • App crashes on startup and during use
  • Data fields randomly clear after being filled
  • Bluetooth connection drops unexpectedly during rides
  • Ride recording stops without notification
  • FIT files become corrupted
  • Battery percentage displays incorrectly (shows 49% constantly, 0% when charged)
  • Zero offset calibration fails with error messages
  • App unresponsive on device settings screen
  • Update notifications loop continuously
  • Registration screen doesn't scale properly on smaller screens
  • App won't open after updates
  • Incompatible with iOS 13, iOS 16
  • Workout data incomplete or not recorded
  • App keeps running in background draining battery
  • Offset detection inconsistent (sometimes left, sometimes right)

Requested features

12 requests
  • Support for multiple power meters on single device
  • Spanish language support
  • Japanese language support
  • Optional notifications instead of mandatory
  • Improved bikeindex.org integration
Show 7 more
  • Better UI/UX design modernization
  • Offset number display for calibration verification
  • ANT+ sensor support for non-4iiii devices
  • Workout recording and history features
  • Strava integration
  • Optional account creation (local-only functionality)
  • Improved error messages and feedback

In-app purchases

None

Garmin Connect™

No in-app purchases

None

4iiii

No in-app purchases

Questions

Is Garmin Connect™ free?
Garmin Connect™ is free to download, with no in-app purchases.
Is 4iiii free?
4iiii is free to download, with no in-app purchases.
Do Garmin Connect™ or 4iiii have ads?
Neither Garmin Connect™ nor 4iiii shows ads.
Which is updated more often, Garmin Connect™ or 4iiii?
Garmin Connect™ ships an update every 2 weeks, and 4iiii every 3 months. Most recently, Garmin Connect™ was updated on October 24, 2026 and 4iiii on October 23, 2026.

Other comparisons