# SumSlate: Tape Calculator — Edit entries, lists & totals

> Edit entries, lists & totals (iPhone/iPad app by Kota Nagai.)

- Source: https://appshunter.io/ios/app/sumslate-tape-calculator/id6812420399 (this page in markdown: same URL + `.md`)
- Developer: [Kota Nagai](https://appshunter.io/developer/1855442675)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English, Japanese
- Released: 2026-09-28
- Data updated: 2026-10-01

## What is SumSlate?

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.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Is SumSlate safe?

Not enough ratings yet to assess SumSlate.

## Is SumSlate legit?

SumSlate: Tape Calculator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for SumSlate is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-09-28

No release notes.

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## More apps by Kota Nagai

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- [ねこカフェ繁盛記 なでる放置クリッカー](https://appshunter.io/ios/app/id6778807846)
- [つづく：AI習慣コーチ](https://appshunter.io/ios/app/ai/id6782531864)

All apps by Kota Nagai: https://appshunter.io/developer/1855442675

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-01.*