# Adding Machine 10Key for iPad — True 10Key Adding Machine

> iPad adding machine with touch-typing aid and editable paper tape. (iPhone/iPad app by Richard Silverman.)

- Source: https://appshunter.io/ios/app/adding-machine-10key-for-ipad/id415227051 (this page in markdown: same URL + `.md`)
- Developer: [Richard Silverman](https://appshunter.io/developer/297096643)
- Category: Finance, Business
- Price: $2.99 (on sale, was $4.99)
- Rating: 4.80/5 from 77 App Store ratings · 64 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.4 · 22 MB
- Languages: American English, French (France), German (Germany), Italian, European Spanish
- Released: 2011-02-03
- Data updated: 2026-06-09
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/adding-machine-10key-for-ipad/id415227051/reviews.md

## What is Adding Machine 10Key for iPad?

'Adding Machine 10Key for iPad’ behaves like a true '10 Key' or 'adding machine' like those made by Monroe, Casio, Sharp and others. Press asterisk (*) for a total, operator entry is reversed, and calculate percentages by multiplying and adding to a stream of numbers. SEE THE 1ST FAQ BELOW.

The iPad version features a full sized (1:1) keypad with TypeTone, a unique audio aid to help guide your finger back to the center of a key. The total (*) key can be on either the left or right side (Sharp or Canon style). 

Also. Review & edit numbers, add or delete lines. Save & retrieve paper tape files. Export paper tape files to iBooks©, Dropbox©, or your favorite printing utility (see the FAQs).

====  Recent Press  =====
Has been featured in iTunes "What's Hot" in the Finance Category.

Strategic Finance (Tools of the Trade): "If you're looking for a professional desk calculator that can give you full 10-key accounting functions with a tape you can name and save, edit, e-mail, or print, check out Interlocken's 10 Key for iPad."
=================

Specifications:
=================
. Behaves the same as a '10 Key' adding machine.
. Export a PDF file to iBooks©, DropBox©, Email, and print with your favorite printing utility.
. Use Apple AirPrint© to print directly.
. TypeTone - a major innovation to aid accurate key entry using audio feedback (iPad version).
. Full size (1:1) keyboard.
. Select from a menu of keypad sounds.
. 400 lines of paper tape history.
. 3 display formats: fixed, fix+, float
. Save paper tapes to disk for later use.
. Correct numbers, add comments, add/delete lines
. Two keypads offer the 'total' key on the left or right (Sharp or Canon style) 
. Comprehensive set of help screens.
. 3 Orientations: Landscape Left/Right + Portrait

================

FAQ's

Q1. What is the difference between 'Adding Machine 10Key for iPad, and 'Accountant Calc' in the App. Store.? 
A1. Both calculators are single-column adding machines or calculators with full-size (1:1) keypads and are optimized for the iPad User Interface. '10 Key' behaves the same as a 10 Key Adding Machine with reversed operator entry while ‘Accountant Calc’ supports free chaining of +, -, x, /, %, √, 1/x. It is easier to use if you are not familiar with how a '10-key' works. 

Q2. Can I touch-type?
A2. The iPad version comes as close to touch-typing as a touch-screen can be. With ‘TypeTone’, a key will guide your finger back to the center of a key with an audio tone.

Q3. How can I edit an incorrect number or add & delete lines from the paper tape?
A3. Touch any line of the paper tape for edit mode. Touch the side controls: Add Line, Delete Line. You can also edit numbers, split Add/Sub or Mul/Div groups. Press Done to return to Calculator mode.

Q4. Tell me about Email, Printing, and Exporting a Paper Tape. 
A4. Email includes a pdf attachment. Print requires an AirPrint capable printer. Open-In will cause a menu of 3rd party Apps to appear. Once exported, print directly to a network reachable printer (even if it is NOT AirPrint capable).

============================

TERMS AND CONDITIONS
Your use of this application is governed by Interlocken Technology's Terms of Use (http://s354819480.onlinehome.us/InterlockenPrivacyPolicy/Interlocken%20Technology%20Privacy%20Policy.pdf) and Privacy Policy (http://s354819480.onlinehome.us/InterlockenPrivacyPolicy/InterlockenTechnologyTermsOfUse.pdf)

## Key features

- Traditional 10-key adding machine emulation
- TypeTone audio feedback for accurate typing
- Editable paper tape with add/delete lines
- Save and retrieve paper tape files
- Export tapes to PDF via iBooks, Dropbox, or email
- Sharp or Canon style total key placement

## Recent user reviews (10 of 64)

All indexed reviews: https://appshunter.io/ios/app/adding-machine-10key-for-ipad/id415227051/reviews.md

### 5/5 — Great,

*2022-09-05, version 6.20kPad*

Takes a little getting used to and works great once you know how!

### 3/5 — Can’t use keyboard?

*2022-08-08, version 6.20kPad*

I can’t figure out how to use my keyboard.  It seems to only work on the touchscreen.

### 5/5 — Perfect for people who are young at heart!

*2022-06-21, version 6.20kPad*

I still use a “hard copy” of this calculator on my desk. The app is perfect for my iPad.

### 5/5 — Great calculator

*2022-06-04, version 6.20kPad*

I am very satisfied with this product.  Recommend it.

### 5/5 — BLT

*2022-01-17, version 6.20kPad*

So much easier than paper feed 10 key.
Appreciate it so much.

### 5/5 — As Good As It Gets...

*2020-10-01, version 6.20kPad*

for a 10-key without actual keys to feel.

### 5/5 — Finally found my go to calculator

*2020-09-23, version 6.20kPad*

I have always used an electric desk calculator, and I have tried finding one that matched it.  This app is great and mimics the calculators that I have been using for years. Thank you!

### 5/5 — Very helpful

*2020-09-11, version 6.20kPad*

This 10-key app is very helpful when doing accounting. Easier to use than a calculator when doing lots of numbers and large numbers. I would highly recommend this app if you need a good 10-key.

### 5/5 — My Go-To Calculator App

*2020-02-11, version 6.20kPad*

As an accountant, this is the best app that simulates an adding machine that I’ve found.  It’s always one of the first apps that I make sure gets installed when setting up new devices.  I have it on my iPad and iPhone.

### 5/5 — Great

*2020-01-17, version 6.20kPad*

Just GREAT!!!

## Frequently asked questions about Adding Machine 10Key for iPad

### What is the difference between this app and 'Accountant Calc'?

This app emulates a traditional 10-key adding machine with reversed operator entry. 'Accountant Calc' supports free chaining of various mathematical operations and may be easier for users unfamiliar with 10-key functionality.

### Can I touch-type accurately with this app?

Yes, the iPad version includes 'TypeTone,' an audio aid that provides feedback to help guide your finger back to the center of a key, making touch-typing on a touchscreen more accurate.

### How can I edit or delete lines from the paper tape?

You can edit incorrect numbers or add/delete lines by touching any line on the paper tape to enter edit mode. Side controls allow you to add or delete lines, and you can also edit numbers or split groups.

### How can I email, print, or export my paper tape?

Paper tapes can be emailed with a PDF attachment, printed directly to an AirPrint-capable printer, or exported to other applications using the 'Open-In' feature. You can also export to iBooks or Dropbox.

### What are the display formats available?

The app offers three display formats: 'fixed,' 'fix+,' and 'float.' These formats allow you to control how decimal points and numbers are displayed in your calculations.

## Version history (last 5 releases)

### 7.10kPad — 2023-12-27

v7.10
====
1. Support for iOS 12.4 and newer.

### 6.20kPad — 2018-11-16

1. Errata was repaired that repeatedly asked user to 'review this App'.

### 6.14kPad — 2018-04-05

Updated for iOS 11.

Includes the following errata fixes:
1. iPad version:
- 'add-line' edit function was repaired
- total key sound is now different from CE key sound

### 6.13kPad — 2018-03-03

Updated for iOS 11.

Includes the following errata fixes:
1. iPad version:
- 'add-line' edit function was repaired

### 5.6kPad — 2016-03-18

1. Repaired voice dictation for comments in iOS 8 & 9
2. Quickly clear the paper-tape history with a double-tap of the calculator's numeric LCD display.

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## More apps by Richard Silverman

- [Calc For Coders](https://appshunter.io/ios/app/calc-for-coders/id297096640)
- [Calc For Coders Lite](https://appshunter.io/ios/app/calc-for-coders-lite/id306579427)
- [Paper Calc Office](https://appshunter.io/ios/app/paper-calc-office/id328576488)
- [Paper Calc Office Lite](https://appshunter.io/ios/app/paper-calc-office-lite/id347713516)
- [Accountant Calculator](https://appshunter.io/ios/app/accountant-calculator/id374945395)
- [Adding Machine 10Key iPhone](https://appshunter.io/ios/app/adding-machine-10key-iphone/id392883834)

All apps by Richard Silverman: https://appshunter.io/developer/297096643

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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 2026-06-09.*