Summary
If your iOS app supports ProMotion but you're still seeing 60fps instead of 120Hz, this is your debugging checklist. It walks through the systematic diagnosis process: render loop configuration, frame pacing issues, system caps, and hitch mechanics. The key insight is brutally simple: ProMotion availability doesn't mean your app automatically uses it. You have to configure it correctly. Part of the larger Axiom collection (948 GitHub stars), this focuses specifically on variable refresh rate displays across iPhone, iPad Pro, and future devices. Also covers production telemetry so you can catch frame rate problems in the wild, not just during development.
Install to Claude Code
npx -y skills add charleswiltgen/axiom --skill axiom-display-performance --agent claude-codeInstalls into .claude/skills of the current project.
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →
Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →
Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →
Connect your Claude agent to live crypto prices and trading routes via 1inch
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Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →
