SumSlate: Tape Calculator

Edit entries, lists & totals

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

Never lose your place in a calculation. Keep labeled entries on screen, fix one row, and let SumSlate recalculate everything that follows. Shopping totals, expense tracking, quotes, quick double-checks. How often do you get halfway through and forget what a number was for? This calculator keeps every entry as its own row. Add labels such as Groceries or Transit so each number still makes sense when you review it later. EVERY STEP STAYS VISIBLE Add, subtract, multiply, and divide while each step is recorded as a row you can scroll back through. FIX ONLY THE ROW THAT IS WRONG Tap a row to change its value or operation. Tap a blank row or long-press an existing entry to insert a calculation in the middle. Every later total is recalculated for you. THREE LISTS Keep shopping, expenses, and work separate by switching among three lists you can name. MEMORY AND UNDO Use M+, M-, and MC to set subtotals aside, and Undo or Redo to step back through changes. MADE TO FIT YOUR HABITS Choose decimal precision, digit grouping, haptic feedback, and light or dark appearance. Calculations are saved automatically on your device. No account is required, and the app works without an internet connection. The free version includes a banner ad. A one-time Remove Ads purchase from Settings hides banner ads permanently.

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The developer, Kota Nagai, 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:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

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

    • Identifiers
    • Usage Data
    • Diagnostics

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
Kota Nagai
Size
7.4 MB
Category
Utilities
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and Japanese
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Kota Nagai
  • Developer Website
  • Privacy Policy

    • More by Kota Nagai

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