Zyn Introduction

Detailed introduction to Zyn minimalist private bookkeeping app

Last updated: 1/15/2024

Zyn Introduction

Table of Contents

What is Zyn?

Zyn is a bookkeeping app focused on privacy protection and minimalist design. We believe bookkeeping should be simple, fast, and completely private.

Core Philosophy

🔒 Absolute Privacy

  • Complete local storage: All data is stored only on your device
  • Zero data upload: No personal information sent to servers
  • No registration required: No account, email, or personal information needed

⚡ Ultimate Simplicity

  • 3-step bookkeeping: Select category → Enter amount → Done
  • Core functions only: Keep only the most necessary bookkeeping features
  • Zero learning curve: Open and use immediately, no setup required

🚀 High Efficiency

  • Instant startup: App startup time under 1 second
  • Quick operations: One-tap selection of frequent categories
  • Smart input: Remembers your usage habits

Main Features

Quick Bookkeeping

  • Support for income and expense recording
  • Preset common expense categories (dining, transport, shopping, etc.)
  • Custom category tags
  • Fast amount input

Data Statistics

  • Display expense statistics by day, week, and month
  • Category expense proportion analysis
  • Clean chart visualization
  • Expense trend analysis

Usage Guide

Adding Expense Records

  1. Open app: Tap Zyn icon to launch
  2. Select category: Choose from preset categories or create new
  3. Enter amount: Use numeric keypad to input expense amount
  4. Add note: (Optional) Add brief description for this expense
  5. Confirm save: Tap “Save” button to complete record

Tip: Frequently used categories automatically move to the front for faster bookkeeping.

View Statistics

On homepage you can see:

  • Today’s total expenses
  • Monthly expense statistics
  • Recent records

Tap “Statistics” tab to view detailed data analysis.

Privacy Statement

Data we DO NOT collect

  • ❌ Personal identification information
  • ❌ Transaction records and amounts
  • ❌ Device location information
  • ❌ Usage behavior data
  • ❌ Third-party analytics data

Data we collect

  • ✅ Only anonymous crash reports (can be disabled in settings)
  • ✅ App performance data (contains no personal information)

Frequently Asked Questions

How to backup data?

Select “Data Backup” in settings. The app will create a backup file locally. You can save this file to cloud storage or other secure locations.

Can data be synced across multiple devices?

Currently Zyn focuses on local storage to protect privacy. You can use export/import functions to transfer data between devices.

How to restore data?

If you need to restore data, use the “Data Recovery” feature in settings and select your previous backup file.

Technical Specifications

System Requirements

  • iOS: 14.0 or higher
  • Android: 8.0 or higher
  • Storage: Minimum 10MB available space

Last updated: January 2024