Comparison

HeyPlus OS vs Larmi Watch

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

Head to head
About

HeyPlus OS

This app syncs with a compatible smartwatch to display heart rate and activity data. Set reminders, alarms, and customize watch faces. It also integrates with HealthKit for seamless data sharing.

Highlights
  • Heart rate monitoring and display
  • Sports data tracking (steps, distance)
  • Smartwatch reminders and alarms
  • HealthKit data synchronization
  • Customizable watch faces
Features
Read full description

HeyPlus OS app is a supporting application for smart watches. Main function: 1. This app is a supporting application of the smart watch, and will use related permissions such as SMS and phone calls. After the user agrees, it will send the monitored SMS and phone-related information to the smart watch through Bluetooth, bringing convenience to the user. experience 2. Record the heart rate data collected by the smart watch, and display it in the form of a line graph and a histogram according to the heart rate data; 3. Record the sports data collected by the smart watch, including the number of steps, stride frequency and distance, and display them in the form of line graphs and histograms; 4. Set reminders and alarms for your smart watch. App Features: 1. Detailed data help you exercise more rationally and scientifically; 2. Exercise and sleep goals encourage yourself to exercise every day and live a healthy life; 3. Support the sharing of healthy exercise information; 4. Massive dials and custom dials, interesting and individual. 【HealthKit】 - Synchronize with motion data in healthkit.You can automatically synchronize the exercise data recorded in HeyPlus OS to healthkit. 【Contact us】 - Company name: Shenzhen Xinenyuan Technology Co., Ltd. - Official website: https://intl.heyplus.com - Contact email: heyplustk@gmail.com 【Warm tips】 - The HeyPlus OS application supports only iOS 9.0 or later. - HeyPlus OS must be used together with HeyPlus OS smart watch. The application alone cannot play all its functions

About

Larmi Watch

Features
Read full description

The Larmi Watch app is a companion app for smartwatches. Its main functions are as follows: 1. One of the app's main functions is to push incoming calls and SMS/MMS messages from your phone to your connected smartwatch, allowing you to answer and view SMS/MMS messages on your watch. If you reject a call on your watch, you can quickly reply, and the app will send a pre-configured message to the caller. Please note that the app requires "SMS and Call Log permissions" to enable these functions; without these permissions, the app will not function. 2. It records heart rate data collected by the smartwatch and displays it in line and bar graphs. 3. It records exercise data collected by the smartwatch, including steps, cadence, and distance, and displays it in line and bar graphs. 4. It records sleep data collected by the smartwatch and displays it in line and bar graphs. 5. Use your watch to start exercise or fitness activities. 6. Set reminders and alarms for your smartwatch. The data on the app is for reference only and should not be used as a basis for diagnosis or treatment.

Screenshots

HeyPlus OS4 screens
Larmi Watch4 screens

Verdict

The call

The clearest difference is update cadence: Larmi Watch at every 8 days against HeyPlus OS's every 4 months. 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

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

HeyPlus OS ships an update every 4 months, Larmi Watch every 8 days. Both last shipped on October 30, 2026.

Scorecard1 real difference · 9 level
HeyPlus OS versus Larmi Watch: the parameters behind the verdict, then further details
ParameterHeyPlus OSLarmi Watch
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews10.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS9.09.0
Further details — not scored
Size183 MB429 MB
Age rating4+4+
Developer深圳市新恩远科技有限公司会桂 罗

In-app purchases

None

HeyPlus OS

No in-app purchases

None

Larmi Watch

No in-app purchases

Questions

Is HeyPlus OS free?
HeyPlus OS is free to download, with no in-app purchases.
Is Larmi Watch free?
Larmi Watch is free to download, with no in-app purchases.
Do HeyPlus OS or Larmi Watch have ads?
Neither HeyPlus OS nor Larmi Watch shows ads.
Which is updated more often, HeyPlus OS or Larmi Watch?
HeyPlus OS ships an update every 4 months, and Larmi Watch every 8 days. Most recently, HeyPlus OS was updated on October 30, 2026 and Larmi Watch on October 30, 2026.

Other comparisons