Comparison

Scent Harmony vs Electroll

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

Head to head

About

Scent Harmony

Features

Read full description

Through simple and convenient Bluetooth function, users can easily set the working time and fragrance concentration of

About

Electroll

Features

Read full description

The intelligent travel manager of Electroll electric vehicles. Through APP you can get the vehicle's remaining battery, current speed, current gear, endurance mileage, lock status, and other real-time data at any time to meet your travel needs. In addition, it also has the functions of intelligent car inspection, constant speed cruise, kinetic energy recovery, etc. to constantly bring you a new riding experience!

Screenshots

Scent Harmony3 screens

Electroll4 screens

Verdict

The call

The clearest difference is iOS requirement: Scent Harmony at 9.0 against Electroll's 15.0. On price, update cadence, ads and in-app purchases 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

Scent Harmony ships an update every 11 months, Electroll every 7 months. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 5 level

Scent Harmony versus Electroll: the parameters behind the verdict, then further details
Parameter	Scent Harmony	Electroll
Price	Free	Free
Update frequency	Every 11 months	Every 7 months — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	9.0 — better	15.0
Further details — not scored
Size	4 MB	16 MB
Age rating	17+	4+
Developer	Immaculate Nduta	Dong Huang

In-app purchases

None

Scent Harmony

No in-app purchases

None

Electroll

No in-app purchases

Questions

Is Scent Harmony free?

Scent Harmony is free to download, with no in-app purchases.

Is Electroll free?

Electroll is free to download, with no in-app purchases.

Do Scent Harmony or Electroll have ads?

Neither Scent Harmony nor Electroll shows ads.

Which is updated more often, Scent Harmony or Electroll?

Scent Harmony ships an update every 11 months, and Electroll every 7 months. Most recently, Scent Harmony was updated on October 1, 2026 and Electroll on October 4, 2026.