LoveLetter - Your AI Pen Pal

Slowly app AI Version

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

LoveLetter is a companion writing application centered around letter correspondence. You can set a title, relationship, and speaking style for a "fictional character" and communicate with them through letters. After you send your letter, the application will generate a reply using AI. The reply will be unlocked after a certain period, just like waiting for a real letter. Optimized for Chinese users: Xue Tao letter paper Feihong random poems 【What you need to prepare】 • Register and create an API Key on openrouter.ai, then save it in the app settings. • Your network needs to be able to access OpenRouter; you can enter the model ID in the settings (default example: deepseek/deepseek-v3.2). 【Privacy and Data】 • Letters and character settings are saved by default on your iPhone; the API Key is stored in the system keychain. • Only when generating a reply will relevant text be sent via HTTPS to OpenRouter and the selected model service provider; the developer does not operate its own server for storing your communication content. • For a complete explanation, please see the in-app settings and the privacy policy link on this page. 【Notifications】 • Optional local notifications can be enabled to alert you when a letter is ready to be read; notifications use vague wording and do not contain the full text of the letter. 【Important Notice】 • Replies are automatically generated by AI and are not written by a real person, nor do they constitute professional advice such as psychological counseling, medical, or legal advice. If you are in a mental health crisis or immediate danger, please contact local emergency services or professional organizations. The app adheres to the standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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v2.3 - Removed "Feihong Poetry" - Optimized the interaction for focus sessions - Optimized the character creation process - Optimized the display of sample letters - Updated default model names to align with the latest DeepSeek API changes - Switching LLMs is no longer a premium feature; free users now have greater flexibility

Version 2.3

The developer, SHAOPENG LIU, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    SHAOPENG LIU
    Size
    10.9 MB
    Category
    Lifestyle
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and Simplified Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 LoveLetter
  • Developer Website
  • Privacy Policy

    • More by SHAOPENG LIU

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