Comparison

Rolled Paper Calculator vs Adding Machine 10Key iPhone

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Rolled Paper Calculator

This calculator offers a unique scrolling paper display for easy review of calculations. It features multiple keyboard modes, flexible decimal point settings, and VAT calculation. Advanced functions include scanning from receipts and note-taking capabilities.

Highlights
  • Scrolling paper display
  • Standard/Advanced/Note keyboard modes
  • Flexible decimal point modes
  • VAT calculation
  • Scan function for input
  • Note-taking and management
  • Copy calculation history
Features
Read full description

~ An Innovative, User-Friendly Calculator with History ~ Selected as one of AppBank's Best iPhone Apps of 2010, this calculator is highly regarded by many users. It makes daily calculations easier and more accurate. Use cases: Calculating expenses while shopping, double-checking household finances, calculating business expenses, learning tool for students, etc. Main Features: 1. Scrolling Paper Display Displays calculations like a scroll, allowing you to check your work anytime. Easily review past calculations by scrolling. 2. Standard/Advanced/Note Keyboard Switching Equipped with three keyboard modes: Standard, Advanced, and Note. Easily switch between modes based on user preference and calculation needs. - Standard: Provides simple, easy-to-use basic calculator functions - Advanced: Extended keyboard with more advanced features - Note: Offers note-taking functionality to save and manage calculation results 3. Flexible Decimal Point Modes Three decimal point modes: - F (Free): No limit on decimal places - 0 (Zero): Displays integers only - 2 (Euro mode): Displays up to two decimal places Easily switch using the "dp/VAT" button (Advanced mode). 4. VAT Calculation Feature Long-press the "dp/VAT" button in Advanced mode to set the VAT rate. After setting, simply switch to +VAT mode using the "dp/VAT" button to automatically add tax to calculations. 5. Scan Function Use the "SCAN" button in Advanced mode to scan numbers from receipts or price lists for automatic input. Especially useful for accurately entering large numbers for tax returns. 6. Advanced Calculation Features - Square root calculation: Easily calculate square roots with the "√" button. - Sign inversion: Switch between positive and negative values with the "±↻" button. - Backspace function: Delete the last digit in case of input errors (Advanced mode). - Restore function: Restore deleted numbers (Advanced mode). - C/AC function: Press "C/AC" to reset current input or calculation results. Long-press to clear all scroll content and choose whether to save as a note. 7. Copy Function Copy calculation history displayed on the scroll to the clipboard using the "copy" button in Advanced mode. 8. Total Calculation Function The "=/Σ" button displays normal calculation results. In Advanced mode, long-press to calculate the sum of all results displayed on the scroll. 9. Note Function Save calculation results as notes for later reference or editing. Saved notes are grouped by date for easy management. Create notes by: - Long-pressing the "C/AC" button to clear all scroll content and save as a note. - Creating or editing notes in Note mode. 10. User-Friendly Interface - Intuitive operation - Clear display - Dark mode support - Easy switching between Standard/Advanced/Note modes 11. NoteToCalc Function Import saved note content directly into the calculator. Main purpose: Record unit prices as memos without using the calculator function, then perform batch calculations later. 12. All Sum Function After importing note content using NoteToCalc, long-press the "+/sum" button in Advanced mode to automatically calculate the sum of all imported values. Compatible Devices Available on iPhone, iPad, and Mac (Apple Silicon). Provides layouts optimized for each device's screen size.

About

Adding Machine 10Key iPhone

This app emulates a traditional 10-key adding machine, offering reversed operator entry and percentage calculation. Users can edit and save paper tapes, export them to various services, and customize keypad sounds. It's designed for accurate and efficient numerical input.

Highlights
  • True 10-key adding machine emulation
  • Reversed operator entry
  • Percentage calculation
  • Editable paper tape history
  • Save and retrieve paper tape files
  • Export paper tape to iBooks, Dropbox, or printing utilities
Currently charting
Read full description

'Adding Machine 10Key for iPhone’ 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 total (*) key can be on either the left or right side (Sharp or Canon style) and the keypad is expandable to show more or less paper tape history. 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, or your favorite printing utility. . TypeTone - a major innovation to aid accurate key entry using audio feedback (iPad version only). . Full size (1:1) keyboard (iPad version only). . Select from a menu of keypad sounds. . 400 lines of paper tape history (full version). . 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. ================ FAQ's Q1. What is the difference between 'Adding Machine 10Key Univ', 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. Only the iPad version includes ‘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)

Screenshots

Rolled Paper Calculator4 screens
Adding Machine 10Key iPhone4 screens

Verdict

The call

The clearest difference is price: Rolled Paper Calculator at Free against Adding Machine 10Key iPhone's $2.99. Rolled Paper Calculator also leads on update cadence (every 4 days vs every 5 weeks) and rating (4.8 vs 4.6). Adding Machine 10Key iPhone's advantage is review sentiment (95% vs 52%) and ads (none vs shown). On in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Rolled Paper Calculator is free to download; Adding Machine 10Key iPhone costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Rolled Paper Calculator holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 28 and 130 respectively. Written reviews complicate that: 52% of Rolled Paper Calculator's written reviews are positive against 95% of Adding Machine 10Key iPhone's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Rolled Paper Calculator ships an update every 4 days, Adding Machine 10Key iPhone every 5 weeks. The most recent releases landed on September 23, 2026 and September 26, 2026 respectively.

Scorecard9 real differences · 2 level
Rolled Paper Calculator versus Adding Machine 10Key iPhone: the parameters behind the verdict, then further details
ParameterRolled Paper CalculatorAdding Machine 10Key iPhone
PriceFree — better$2.99
Rating4.8 (28 ratings) — better4.6 (130 ratings)
Positive reviews52.0% of reviews95.2% of reviews — better
Number of ratings28130 — better
Update frequencyEvery 4 days — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
Best chart rank—#56 — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.612.4 — better
Further details — not scored
Size5 MB10 MB
Age rating4+4+
DevelopermobazoRichard Silverman

Customer experience

Rolled Paper Calculator

All ratings28 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews98 reviews
Positive52.0%
Neutral13.3%
Negative34.7%

Adding Machine 10Key iPhone

All ratings130 ratings
Positive92.3%
Neutral3.1%
Negative4.6%
Written reviews62 reviews
Positive95.2%
Neutral0.0%
Negative4.8%

Bugs and requests

Rolled Paper Calculator

Not enough reviews yet to summarise bugs or requests.

Adding Machine 10Key iPhone

Reported bugs

9 issues
  • Watermarks premium PDF exports
  • Haphazardly laid out controls
  • Touchy sound toggle in free version
  • Keypad glitch on re-opening
  • Nagging review requests (Don't ask again button not working)
Show 4 more
  • Incessant review requests (Don't Ask Again option not working)
  • Clearing the tape is a guessing exercise (I button behavior inconsistent)
  • Custom keypad feature removed from iPhone version
  • Inconsistent sound and clear button behavior

Requested features

10 requests
  • Eliminate tape for bigger total screen
  • Add square root feature
  • Bring back custom keypad feature on iPhone version
  • Allow more than 350 lines
  • Allow more notations on tape
Show 5 more
  • Ability to custom label groups
  • Fix period button centering
  • Consider changing app icon
  • Preferences for number format (input and output commas)
  • More control over number formats

In-app purchases

None

Rolled Paper Calculator

No in-app purchases

None

Adding Machine 10Key iPhone

No in-app purchases

Questions

Is Rolled Paper Calculator free?
Rolled Paper Calculator is free to download, with no in-app purchases.
Is Adding Machine 10Key iPhone free?
Adding Machine 10Key iPhone costs $2.99, with no in-app purchases.
Which has better reviews, Rolled Paper Calculator or Adding Machine 10Key iPhone?
Rolled Paper Calculator is rated higher. Rolled Paper Calculator averages 4.8 out of 5 from 28 ratings, while Adding Machine 10Key iPhone averages 4.6 from 130 ratings.
Do Rolled Paper Calculator or Adding Machine 10Key iPhone have ads?
Rolled Paper Calculator shows ads; Adding Machine 10Key iPhone does not.
Which is updated more often, Rolled Paper Calculator or Adding Machine 10Key iPhone?
Rolled Paper Calculator ships an update every 4 days, and Adding Machine 10Key iPhone every 5 weeks. Most recently, Rolled Paper Calculator was updated on September 23, 2026 and Adding Machine 10Key iPhone on September 26, 2026.

Other comparisons