ios-performance
Profile and optimize iOS apps with Instruments, memory management, and rendering techniques. Use when profiling iOS apps with Instruments or optimizing memory and rendering. (triggers: **/*.swift, Instruments, Allocations, Leaks, dequeueReusableCell)
Best use case
ios-performance is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Profile and optimize iOS apps with Instruments, memory management, and rendering techniques. Use when profiling iOS apps with Instruments or optimizing memory and rendering. (triggers: **/*.swift, Instruments, Allocations, Leaks, dequeueReusableCell)
Teams using ios-performance should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/ios-performance/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How ios-performance Compares
| Feature / Agent | ios-performance | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Profile and optimize iOS apps with Instruments, memory management, and rendering techniques. Use when profiling iOS apps with Instruments or optimizing memory and rendering. (triggers: **/*.swift, Instruments, Allocations, Leaks, dequeueReusableCell)
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# iOS Performance ## **Priority: P0** ## Implementation Workflow 1. **Profile with Instruments** — Regularly use Allocations and Leaks to detect memory issues. Use Time Profiler for CPU stalls. 2. **Reuse cells** — Always use `dequeueReusableCell` and keep `cellForRowAt` lightweight. 3. **Cache images** — Use `SDWebImage` or `Kingfisher` for remote assets. `AsyncImage` lacks caching for lists. 4. **Offload to background** — Move parsing, encryption, and heavy computation off the Main thread using GCD or Tasks. 5. **Enable strict warnings** — Set `SWIFT_TREAT_WARNINGS_AS_ERRORS` in Release builds. 6. **Run static analysis** — Use Xcode's "Analyze" (Product > Analyze) to catch logic errors. See [background processing and cell reuse examples](references/implementation.md) ## Anti-Patterns - ❌ Parsing/processing on Main thread — offload to background using `Task.detached` or GCD - ❌ Redundant cache clears — let the system handle low-memory via `applicationDidReceiveMemoryWarning` - ❌ Undetected retain cycles — use Leaks instrument frequently during development ## References - [Profiling & Optimization](references/implementation.md)
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