InkCalc

AI Calculation Notebook

Only for Mac

Free · In‑App Purchases

Mac

v1.0 — Calculation notes with four AI shortcuts. Pick Claude, OpenAI, or on-device Apple Intelligence. iCloud sync. Markdown/CSV export. InkCalc is a notepad-style calculator for macOS. Write expressions line by line and results appear on the right, accumulating over time alongside written notes — a calculator built to be kept open as a long-running notebook, not a scratchpad. InkCalc is offered as an auto-renewable subscription. New subscribers receive a 1-month free trial; after the trial, the subscription auto-renews at $1.99/month (local pricing may vary). All AI shortcuts, live currency exchange, and continuous updates listed below require an active subscription. — AI-NATIVE SHORTCUTS (subscription required) — ⌘⇧I — Natural language to expression Write "Tokyo–Osaka shinkansen round trip × 4 people" and AI converts it to `14000 * 2 * 4`. ⌘⇧F — AI fixes errors With one click, AI replaces a parser-failed line with a corrected expression. ⌘⇧M — One-to-three-line note summary AI reads your whole note and summarizes the intent and conclusion in plain natural language. ⌘⇧J — Intent inference from comments Write a question comment like `# Monthly communications total?`, and AI analyzes the relevant lines and inserts a summing formula directly below the question. Backends: Apple Intelligence (default, on-device or via Apple Private Cloud Compute with end-to-end encryption — neither the developer nor any third party can read the data), or bring-your-own-key options. With a bring-your-own-key backend, the user supplies their own credentials and prompts are sent to the chosen provider. — CALCULATOR FEATURES — • Unit math: `5 km in miles`, `1 kg as lb`, `100 USD in JPY` • Real-time currency conversion (USD, EUR, JPY, GBP, and more) — subscription required • Percent: `20% of 100`, `1000 + 10%` • Hex / binary / octal literals + bitwise ops: `0xff & 0x0f`, `255 in hex` • Line references: `ans`, `line2`, `sum above`, `avg above`, `total` • Dates: `2025-04-25 + 7 days`, `today + 30 days`, date diff in days • Functions: sqrt, sin/cos/tan, ln/log, round/floor/ceil, sum/min/max/avg, and more • Constants: pi, e, tau • Variables: assign with `x = 5` and reuse on later lines — AS A CALCULATION NOTE — • Multiple notes + folder management. Each note is a local `.inkcalc` file. • Pick an iCloud Drive folder to auto-sync between Macs. • Export to Markdown / CSV. — UI — • Menu-bar resident with Dock toggle • Dark, minimal UI • Adjustable font size and decimal precision • Always-on-top window mode — PRIVACY — The developer collects nothing — no server, no telemetry, no analytics. With Apple Intelligence as the backend, requests stay on-device or are processed through Apple Private Cloud Compute with end-to-end encryption — neither the developer nor any third party can read the data. See the in-app privacy policy for details. — SUBSCRIPTION — • Title: InkCalc Monthly (auto-renewable subscription) • Length: 1 month, auto-renewing • Price: $1.99 / month (Apple displays your local price in-app) • Free trial: 1 month for new subscribers • Payment is charged to your Apple ID after the trial. The subscription auto-renews unless canceled at least 24 hours before the end of the current period. • Manage or cancel in System Settings → Apple ID → Media & Purchases → Subscriptions. • Privacy Policy: https://inkcalc.app/privacy • Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ — REQUIREMENTS — macOS 13 or later. Universal (Apple Silicon + Intel).

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The developer, KENTARO SOGA, 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:

    • User Content

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
  • KENTARO SOGA
Size
  • 3.5 MB
Category
  • Productivity
Compatibility
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
  • Mac
    Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
Languages
  • English and Japanese
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Kentaro Soga
  • Developer Website
  • Privacy Policy