From Childhood Coding to Calendar Innovation — My Peanut Notes 2 (MyPN2)

On September 6, 2026, after years of using various calendar applications, the author decided to personally develop a web app calendar system named MyPN2. This decision stemmed from his profound dissatisfaction with existing calendar applications, particularly the limitations of the pre-installed calendar systems on major mobile or smart devices. He recalled that when switching phones, resynchronizing all old data sometimes failed to restore everything completely, often only syncing data from recent years while losing earlier information. Such experiences made him realize that calendar applications on the market generally suffer from insufficient functionality and usability issues, prompting him to create a more flexible calendar system that better meets the needs of Hong Kong users. On October 9, the first public version was completed.

From Childhood Programming to Calendar Innovation

The author developed an interest in programming from a young age, a passion that originated from interactions with his father at home. He recalls being exposed to electronic products during his upbringing and accumulating rich experience through continuous practice. Over the past decade, he has used various calendar applications and discovered many issues with their functionality, such as the calendar search feature becoming sluggish with larger databases, potentially leading to system overload. These problems prompted him to consider how to design a calendar system that better meets user needs.

The Perfect Combination of Flexibility and Security

MyPN2 is a "Hong Kong-centric" web app calendar system that fully considers the needs of Hong Kong users. The developer points out that data entry is highly flexible, with the system using PHP and MySQL—traditional yet stable. The unique selling point of this system lies in its flexibility and security; during the registration process, users are not required to provide any personal data, ensuring user safety and privacy. Additionally, MyPN2 has a large database capacity, with the developer using his own data as an example, indicating that five years of data only occupies a small amount of space, allowing users to avoid concerns about data loss or retrieval issues.

Feature Highlights and User Experience

The features of MyPN2 are designed with the pace of life of Hong Kong residents in mind. Users can choose to display Hong Kong public holidays and labor holidays each year, with holidays highlighted in red and anniversaries in yellow, making it easy for users to see at a glance. Furthermore, MyPN2 supports a daily content limit of 1,000 characters, allowing users to flexibly record their daily activities, even incorporating emojis for added fun. The developer mentioned that considering potential interruptions or loss of network connectivity during use, the system is designed with an auto-save draft feature, ensuring that if users temporarily stop writing, the system will automatically save the data, preventing the loss of important information due to network issues.

Market Positioning and Competitor Analysis

The developer noted that "99% of calendar applications on the market follow the same approach, which is to treat event headings, dates, or time ranges merely as event details. This method is not bad, but it lacks sufficient flexibility." MyPN2 attempts to offer different handling methods in terms of flexibility and data preservation to address these common user pain points.

Simple and Clear Onboarding Process

The onboarding process for using MyPN2 is very straightforward. Users simply need to visit the mypn2.com website, register for free without submitting personal information such as email addresses or phone numbers, and no credit card is required. Registration only requires three things: a username and password, a security question for password recovery, and the answer to that question. The account name is randomly assigned as a number, with no option for a custom name. This design significantly lowers the barrier to entry for users, allowing more people to easily get started.

Target User Group

The design of MyPN2 emphasizes flexible recording and auto-save features, making it particularly suitable for users who need to maintain long-term personal records and prioritize privacy.

Product Name: MyPN2
Official Website: https://mypn2.com
Supported Platforms: Web
Pricing: Free