Rhylm

  • Platform: iOS

  • Overview: An ambient soundscape application designed to mask distractions with calm, gentle white noise.

  • Design: Features minimalist motion visuals generated mathematically based on the periodicity of sine and cosine functions—blending my background in mathematics with aesthetic design.

  • Content:

  • Currently features three distinct ambient noise types: White Noise, Pink Noise, and Brown Noise.

  • Includes three original musical tracks: Stay Under the Tide, Rainy Days, and Everything Will Be Okay.

  • Note: All sound design and musical composition were produced personally by me (Zixiang Zhang).

  • Roadmap: Future updates will introduce an expanded library of ambient sounds and original music.

Rhylm Privacy Policy

Backtrack

  • Platform: iOS
  • Overview: A workflow management tool designed specifically for recurring tasks, acting as a hybrid between a reminder app and a checklist.
  • Core Workflow: Create custom checklists for your routines. Before starting a task, verify each item; once completed, the entire list can be reset to its initial state with a single tap, ready for the next cycle.
  • Features: Supports priority settings and push notifications to keep your routines on track.

Backtrack Privacy Policy

Norkta

  • Platform: iOS

  • Overview: A local-first PDF utility tool featuring four powerful modes.

  • Key Features:

  • Color Inversion: Supports both Global Inversion and Black & White Inversion modes for better readability.

  • Text Extraction: Instantly extracts all text content from PDF documents.

  • Compression: Reduces file size for bulky PDFs. Users can balance quality and size with three compression levels (Note: Best suited for raster-heavy files, less effective for small vector-based PDFs).

  • Merge: Seamlessly stitches two PDF files into a single document.

  • Privacy Promise: All processing happens 100% on-device. Neither Apple nor I collect any of your data. Your privacy is guaranteed.

Norkta Privacy Policy

Marktap

  • Platform: macOS
  • Overview: A notepad designed for the macOS Menu Bar. It serves as a permanent, anchor-point notebook for capturing fleeting inspiration instantly.
  • Features:
  • Markdown Support: Supports essential Markdown syntax with real-time rendering (expanded syntax support coming in future updates).
  • Lightweight & Invisible: Designed to be unobtrusive, yet you always know exactly where to summon it when inspiration strikes.

Marktap Privacy Policy

Texmorph

  • Platform: iOS / MacOS

  • Overview: A text utility that will help reformat the text output, remove unwanted markdown formatting characters, resolve conflict Latex expression mixed in markdown expressions that may cause problems in some math equation rendering engine(such as MathJax).
  • Features: Liquid class design that looks and feels smooth and beautiful, quick and intuitive workflow, various flexiable cleaning criterias.

Texmorph Privacy Policy

Development Notes

All applications are natively compiled and designed using Swift and SwiftUI, ensuring perfect compatibility with Apple Silicon devices.

While I hope to eventually port these applications to Windows and Android (rewriting them in other languages), due to current time constraints and personal capacity, I am exclusively maintaining and developing them for the iOS and macOS ecosystems at this time.

© 2026 Zixiang Zhang. All Rights Reserved.