iOS Product Case Study

Transforming Code Reviews with AI

Peerwalk is a native iPad and macOS app engineered by TapDigital that enables development teams and solo engineers to perform rapid, continuous, over-the-shoulder code reviews with direct AI support.

Download on App Store *Currently in Public Preview

The Why: Inefficient Review Cycles

Modern teams struggle with code review bottlenecks. Peerwalk addresses these exact developer friction points.

📦

Massive Pull Requests

End-of-sprint mega-PRs lead to reviewer exhaustion, superficial checks, and missed architectural flaws. Peerwalk breaks code changes into bite-sized reviews.

Infrequent Reviews

Irregular reviews lead to severe knowledge silos and long delivery delays. Continuous feedback cycles build team-wide learning and consistent code standards.

🎯

Lack of Accountability

Without clear trackers, feedback items easily slip through, creating latent technical debt. Peerwalk enforces structural tracking for every annotation.

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The Solo Developer Gap

Solo developers frequently code in isolation, missing valuable second-opinion reviews. Peerwalk bridges this, delivering expert, multi-model AI code audits.

The How: Continuous Review Cycles

An elegant native experience that guides reviews from selection to live walkthrough.

01. Granular Commit Selection

Connect your GitHub repositories and select specific commits, branches, or individual modified files directly on your iPad. Avoid auditing massive PRs; target precisely what has changed to keep reviews focused, fast, and actionable.

  • Deep GitHub API integration syncing user branches in real time.
  • Visual diff inspector highlighting clean changes.
  • Filtering options to exclude media and autogenerated files.
Select Files Screen

02. Collaborative Invites

Easily invite fellow engineers, product leads, or external client stakeholders into a focused review session. Collaborate in real time or leave reviews open for asynchronous auditing across time zones.

  • Encrypted review room generation syncing collaborator inputs.
  • Anonymous display names and avatar supports to protect privacy.
  • Push notification triggers alerting collaborators when reviews are ready.
Invite People Screen

03. Multi-Model AI Diagnostics

Leverage multiple industry-leading AI models (GPT-4, Claude, Gemini) to simultaneously audit your code. Receive instant feedback detailing architectural warnings, performance optimizations, Swift 6 strict concurrency checks, and test coverage suggestions.

  • Parallel LLM queries returning comparative review outputs.
  • Specialized prompt agents trained on iOS Swift best practices.
  • Code token limits management ensuring fast responses.
AI Review Screen

04. High-Fidelity Comment Threads

Add detailed line-by-line annotations, attach rich comment threads, tag issues as bugs, style guidelines, or architectural queries, and chat with team members inside comments. Enforce quality by marking every flagged issue as resolved.

  • Dynamic line numbering and inline code injection hooks.
  • Tag classifications (Bug, Refactor, Style, Note).
  • Strict status locks ensuring every critical comment is addressed.
Annotate Screen

05. Synced Screen Presentations

Launch an over-the-shoulder live present mode to guide reviewers directly through your implementation. Sync scrolls and line highlights across multiple screens, combining digital-first efficiency with face-to-face clarity.

  • Synchronous viewer engine scrolling matching presenter viewports.
  • Live pointer markers highlighting target code lines.
  • Companion voice options for remote presentations.
Walkthrough Screen

Architectural Highlights

Deep architectural details that power Peerwalk's flexible, multi-model execution.

AI Platforms Screen

Flexible AI Models

Peerwalk supports standard platform endpoints for OpenAI's ChatGPT, Anthropic's Claude, Google's Gemini, and your own private on-premise custom AI server. Input your API key locally and configure custom models (e.g. `gpt-4o`, `claude-3-5-sonnet`) to ensure complete data autonomy.

Custom Commands Screen

Custom AI Prompts

Establish recurring custom commands to automate repetitive audits. Define global prompts (e.g. `//summarize`, `//concurrency`, `//test-generate`) and run complex LLM evaluations with simple double-slash shortcut commands inside the chat box.

Experience Peerwalk Live

Peerwalk is currently available for free in public preview. Download the app today through Apple TestFlight to experience AI-supported code reviews.