ClarSum: AI Calculator

Tap, talk, or snap.

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

A calculator that talks: big high-contrast keys, voice input, snap-a-receipt totals, answers read aloud. Runs on your iPhone — nothing leaves your device. Some math moments aren't for typing. Cooking with messy hands. Driving when the meter is running. Squinting at a stack of receipts. ClarSum is the AI calculator built for those moments — tap, talk, or snap your math, your way. — Three ways to calculate — • Tap (keypad) Big keys, high contrast, large numerals. Every button is at least 44pt (Apple's minimum touch target), and the main digits are noticeably larger than the system calculator. Works whether you're wearing gloves, fighting glare on a sunny patio, or want bigger text. Full VoiceOver support throughout. • Talk (voice input) Hold the mic and say "three forty-five plus six seventy-eight." ClarSum transcribes locally via Apple Speech. Dialog mode lets you keep going — "plus three, change to minus, what was that?" — without re-tapping the mic. Anything ClarSum gets wrong is one tap away from a fix. • Snap (camera OCR) Point your camera at any receipt, invoice, price tag, or screen with numbers. Apple Vision grabs the total and drops it into your running expression. Misread a digit? Long-press to edit a single character — no need to retype the whole line. — 100% on-device — No cloud. No account. No data leaves your iPhone. OCR runs through Apple Vision. Speech runs through Apple Speech. We can't see your math because it never touches our servers — not even briefly. — Left-to-right math, the way you write it — ClarSum evaluates "3+5x2" as 16, the same way you'd run the tape with pen and paper. Every step shows on screen so you can see what's happening and undo a wrong tap. — Who ClarSum is for — Hands-busy moments: cooking, driving, building, traveling. Numbers-on-paper moments: receipts, bills, price tags, exam papers. Users with low vision or presbyopia: large numerals, high contrast, full VoiceOver support, magnifier on long-press. Voice-first preference: accessibility users, multitaskers, anywhere you can't tap precisely. — About ClarSum Pro — Free ClarSum includes everything above. A single launch-screen ad shows when you open the app from cold; that's the only ad placement. ClarSum Pro is a one-time in-app purchase (no subscription) that removes the launch ad permanently, unlocks AI-enhanced voice (Apple Intelligence dialog mode on iOS 26+), and helps fund continued development. — Privacy commitment — ClarSum does not collect your name, email, location, or contacts. ClarSum does not upload your photos, voice recordings, or calculation history. ClarSum does not require an account. ClarSum does not embed third-party analytics SDKs (the ad SDK is the only third-party code, and it is removed entirely in ClarSum Pro). Full privacy policy is linked at the bottom of this App Store page.

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The developer, 北京灵可司文化科技有限公司, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Location
    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
    • Usage Data

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
  • Beijing Lingkesi Cultural Technology Co., Ltd
Size
  • 5.4 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 and Simplified Chinese
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Beijing Linkos Culture & Technology Co., Ltd.
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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