---
title: "Adding Machine 10Key iPhone — App Overview"
url: https://marlvel.ai/apps/com-papercalc-mobile-papercalc-10key-suite
category: Finance
developer: Richard Silverman
platforms: ios
rating: 4.6 (129 ratings)
pricing: paid
report_level: overview
generated: 2026-04-19
last_verified: "2026-04-19T16:08:02.957Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app successfully bridges the gap between legacy hardware accounting tools and modern mobile workflows by offering a persistent, editable digital paper tape.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Finance |
| Rating | 4.6 ★ (129) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 7.10k |
| Developer | Richard Silverman |

<!-- SECTION: Summary -->
## What is Adding Machine 10Key iPhone?

Adding Machine 10Key iPhone is a professional-grade calculator designed to replicate the functionality of traditional physical adding machines. It provides users with a digital paper tape interface that supports editing, saving, and exporting calculations for accounting and financial tracking.

<!-- SECTION: Key Features -->
## Key Features

- **10-Key Accounting Logic**: Emulates professional desk calculators with operator entry reversal and specific total key placement options.
- **Paper Tape History**: Maintains a scrollable, expandable record of calculations that allows for line-by-line editing, deletion, and insertion.
- **File Management and Export**: Supports saving calculation sessions as files and exporting them to external services like Dropbox, iBooks, or printing utilities.
- **Percentage Calculation**: Enables users to calculate percentages by multiplying and adding directly into a continuous stream of numbers.

<!-- SECTION: Target Audience -->
## Who is it for?

Accounting professionals and individuals who require a traditional 10-key calculator interface with audit trail capabilities.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/adding-machine-10key-iphone/id392883834?uo=2)
- [Full Intelligence Report](https://marlvel.ai/apps/com-papercalc-mobile-papercalc-10key-suite)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/com-papercalc-mobile-papercalc-10key-suite).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*