LINE, Yahoo! Japan

Custom App Icon

LYP Premium is a unified membership service for LINE, Yahoo! Japan and PayPay. To drive new subscriptions, we launched the Custom App Icon feature in Japan, which allows users to personalize their LINE app icons with new designs updated monthly. This quickly became the most popular premium feature, resulting in a 228% increase in new memberships within the first week.

My role

Product Manager

What I did

Stakeholder management
Wireframe, UX specification
User research & testing

Platform

iOS, Android

Timeline

Apr 2024 - Sep 2024

Team

2 Product Managers
2 UI Designers
2 Graphic Designers
4 Engineers

What's LYP Premium?
A membership service for LINE, Yahoo! Japan, and PayPay.

LINE, Yahoo! Japan and PayPay together now reach nearly the entire population of Japan. LYP Premium unifies these services under a single monthly membership, providing users with a more convenient and valuable experience. The membership offers new benefits on the LINE app on top of the perks already available through Yahoo! Japan Premium.

Background

Problem

1. High subscription cancellation rate
Currently, 60% of users cancel their subscription after the Premium free trial, with 49.7% of these cancellations from users aged 15-24.


2. Slowdown in new premium subscriptions
Growth in new subscriptions has slowed since the service launch, highlighting the need for a refreshed promotional strategy.

Project Goal

We decided to introduce a new premium feature to help retain existing subscribers and increase the visibility of the premium service.

Impact

Conversion rate

228% increase

Within a week of the launch, the number of new premium membership subscriptions increased to 605 users, a 228% increase from the previous week.

Usage rate per visit

69.4%

69.4% of users who visited the Custom App Icon screen changed their icon design.

Total subscription

35.3%

Of the 34K new subscribers, 12K registered through the custom app icon, representing 35.3% of the total.

Timeline
Apr 24
May 24
Jun 24
Jul 24
Aug 24
Sep 24
🔍
Product Requirement Document
🔍
Feature Specification
Plan
Research
📊
New premium feature survey
📊
App icon design survey
🎨
UI Design
Graphic Design
🎨
Design
📱
iOS
📱
Android
Dev
📊
QA Test
🚀
Go Live
QA
Market opportunities

1. Premium subscribers' reactions to customization features
The main users of the Font feature, the second most frequently used after Stickers, are 15-24-year-olds, representing 42.7% of subscribers.

2. Positive response to LINE’s customization effects
Over 80% of women across all age groups and men aged 15-19 responded positively to various effects in the Home Tab and Chat Room.

3. Custom app icon features in other services
Offering some free icons with additional paid options shows higher usability and engagement.

Telegram
Discord
Duolingo
1st User research
New premium feature survey

To identify potential candidate features for new premium benefits, we conducted an online survey with 3,000 LINE users aged 15 to 59 across three countries: Japan, Taiwan, and Thailand.


Process

1. Define objectives
2. Survey design (Questions, Mood Board, Translation)
3. Distribution
4. Data analysis


Findings

1. The need to change the app icon directly within LINE
Across all three countries, the top priority is enabling users to change the app icon directly within LINE, without requiring an additional app. Streamlining this process is essential.

2. Regular App Icon Updates
The majority responded that they would change the LINE app icon approximately 1–3 times a month.

Based on our research, we decided to make it easy for users to change the app icon directly in the LINE app and to provide new icon designs every month.

Target users

1. Premium non-subscribers
LINE users who have already responded positively to LINE's customization effects but have low awareness of the Premium service.

Allow users to experience custom icons and discover Premium service benefits.

2. Premium subscribers
15-24 years old users who have a demand for app customization but show a high cancellation rate.

Utilize Custom App Icon feature to reduce subscription cancellations.

2nd User research
App icon design survey

While working on icon designs, we conducted an online survey with 500 employees at the Japan headquarters to understand Japanese users' design preferences.

Findings

1. Preference for seasonal themes
Users are drawn to seasonal themes that reflect themes such as anniversaries and holidays (e.g., Halloween, Christmas).

2. Automatic icon updates
Users prefer seasonal icons that update automatically rather than requiring manual changes.

3. Icon design preferences by age group
While solid and pastel colors are generally popular, users in their 20s show a preference for more vibrant designs compared to other age groups.

Based on these insights, we've decided to include seasonal icon designs with automatic updates as a key promotional feature.

Solution

We introduced the Custom App Icon feature as part of our new premium membership benefits, allowing users to personalize the LINE messenger icon.

Easy access to change the app icon

Based on user research, I made this feature easily accessible by adding an app icon screen in LINE’s settings menu, allowing users to change the icon effortlessly without an additional customization app.

Different screens based on
premium membership status

To reach a wider audience, we made this feature available to all users, reserving exclusive icons for premium members to highlight the benefits of subscribing.

1. Basic icons
Basic icons are available to all users, regardless of premium membership status

2. Premium icons
Premium icons are exclusively for premium subscribers and new icons designs are added each month.

Premium non-subscribers

Non-subscribers have access to free Basic icons only, while Premium icons are marked with a badge to indicate they’re exclusive to Premium members. If a user selects a Premium icon, they’re directed to the subscription screen.

Premium subscribers

Subscribers can access all icons, with new premium designs added each month.

Promotional Icon

Seasonal icon available to everyone for a limited period of time.

We launched promotions during events like Halloween and Christmas to introduce our feature to non-subscribers. At the start of each event, LINE users' icons are automatically updated to a limited-time seasonal icon.

1. Seasonal theme profile
To enhance the impact of the promotional icon, we have added Halloween-themed decorations to the LINE Messenger profile area.

2. Tooltip on promotional icon
The duration for using promotional icons varies based on subscription status. To make this clear to the user, I displayed a tooltip on the screen.

  • Non-subscribers: 7 days / Subscribers: 30 days

3. Auto-Apply button for promotions
Subscribers can enable or disable the auto-apply feature, allowing them to keep their selected premium icons without automatic changes.

Splash image set with the custom icon

To maximize the impact of the custom app icons, we also provided splash images that match the icon colors. When users changed the icon, the corresponding splash image was displayed to ensure they noticed the change. (This feature is only available on Android)

Press release

Over 18 press releases were published within a week following the release.

LINE App Icon Now Customizable | LINE Yahoo Corporation

LINE Yahoo Corporation has officially launched the customizable app icon feature for the communication app "LINE".

Read more

LINE App Icon Now Available in Black or Colorful Designs | IT Media

LINE Yahoo has introduced a feature in the communication app "LINE" that allows users to change the icon design.

Read more
Takeaway
This project highlighted the value of in-depth user research and data-driven decisions.
It was my first experience conducting user research across three countries. Although translating into three languages and drawing common insights across regions was challenging, I effectively integrated user feedback into each feature, such as icon design and update frequency. Additionally, by targeting users based on data showing strong interest in LINE’s customization features, the Custom App Icon became one of the most popular premium features, significantly driving new membership subscriptions.