Volt: AI Cost & Usage Tracker

Live Spend & Usage Analytics

Free · Designed for iPad. Not verified for macOS.

Mirror your Claude and OpenAI usage from your Mac to your iPhone. Live session limits, key health, and organization spend, private, on-device, no account needed. Volt is a companion for developers who use Claude, Claude Code, and OpenAI. Pair it with Volt for Mac by scanning a QR code, and your usage comes to your iPhone, no account, no sign-up. Volt is an independent developer tool. It is not affiliated with, endorsed by, or sponsored by Anthropic or OpenAI. It works with your own accounts and your own API keys. WHAT YOU CAN DO • Live session tracking — see your Claude 5-hour and weekly usage with a live countdown, so a rate limit never surprises you. • Organization analytics — if you use admin API keys, view spend, model breakdown, workspaces, and API-key activity for your Claude and OpenAI organizations. • Key vault — see the API keys you manage in Volt for Mac, with on-device health checks. Keys are never entered on your iPhone. • Insights — on-device usage and spend forecasts. • Notifications — optional alerts when you approach a session limit or when it resets. PRIVATE BY DESIGN • No account required. Pairing uses a one-time QR code from your Mac. • Your API keys never touch our servers. They stay on your devices and sync only through Apple's iCloud Keychain. • Organization analytics are fetched directly between your device and the provider (Anthropic / OpenAI) using your own key. • We mirror only usage figures (percentages and spend) from your Mac, never your keys or prompts. REQUIREMENTS • Volt for Mac, where you add and manage your API keys and sign in to your plan. • Your own Claude / OpenAI accounts and keys. Want to look around first? On the connect screen, tap "Preview with sample data" to explore every screen with example data — no Mac required. URLs: Support: https://lexylon.com/volt · Privacy: https://lexylon.com/volt-privacy · Marketing: https://lexylon.com/volt

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The developer, Charith Gunasekera, 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 Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers

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
Charith Gunasekera
Size
4.1 MB
Category
Utilities
Compatibility
Requires iOS 18.6 or later.
  • iPhone
    Requires iOS 18.6 or later.
  • iPad
    Requires iPadOS 18.6 or later.
  • Mac
    Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.6 or later.
Languages
English
Age Rating
4+
Copyright
© 2026 Lexylon Pty Ltd
  • Developer Website
  • Privacy Policy

    • More by Charith Gunasekera