Comparison

Rolled Paper Calculator vs Adding Machine 10Key Universal

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 Universal

This app emulates a traditional 10-key adding machine for precise calculations. It offers features like reversed operator entry, percentage calculation, and the ability to review and edit entries on a digital paper tape. Users can save, export, and print their calculation tapes.

Highlights
  • 10-key adding machine emulation
  • Reversed operator entry
  • Percentage calculation
  • Digital paper tape with editing
  • Save and export tapes (PDF)
  • TypeTone audio feedback (iPad)
Currently charting
Read full description

'Adding Machine 10Key Universal’ 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. This universal version works with both iPhone and iPad. 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 (iPad or iPhone) 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 (iPad version). . 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 (iPad version) ================ 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. 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)

Screenshots

Rolled Paper Calculator4 screens
Adding Machine 10Key Universal4 screens

Verdict

The call

The clearest difference is price: Rolled Paper Calculator at Free against Adding Machine 10Key Universal's $3.99. Rolled Paper Calculator also leads on update cadence (every 4 days vs every 2 months). Adding Machine 10Key Universal's advantage is review sentiment (94% vs 52%) and ads (none vs shown). On rating, 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 Universal costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Rolled Paper Calculator against 4.7 for Adding Machine 10Key Universal. Both are backed by a comparable volume of ratings — 28 and 134 respectively. Written reviews are what separate them: 52% of Rolled Paper Calculator's written reviews are positive against 94% of Adding Machine 10Key Universal's.

UpkeepUpdate frequency

Rolled Paper Calculator ships an update every 4 days, Adding Machine 10Key Universal every 2 months. The most recent releases landed on September 23, 2026 and September 26, 2026 respectively.

Scorecard8 real differences · 3 level
Rolled Paper Calculator versus Adding Machine 10Key Universal: the parameters behind the verdict, then further details
ParameterRolled Paper CalculatorAdding Machine 10Key Universal
PriceFree — better$3.99
Rating4.8 (28 ratings) — better4.7 (134 ratings)
Positive reviews52.0% of reviews94.0% of reviews — better
Number of ratings28134 — better
Update frequencyEvery 4 days — betterEvery 2 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
Best chart rank—#200 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.612.4 — better
Further details — not scored
Size5 MB23 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 Universal

All ratings134 ratings
Positive92.5%
Neutral1.5%
Negative6.0%
Written reviews50 reviews
Positive94.0%
Neutral0.0%
Negative6.0%

Bugs and requests

Rolled Paper Calculator

Not enough reviews yet to summarise bugs or requests.

Adding Machine 10Key Universal

Reported bugs

11 issues
  • Cannot save taped
  • Cannot export results
  • Does not work for new iPad
  • Total only shows digits after the decimal that aren't zero
  • Method to clear the tape is ridiculous
Show 6 more
  • It does not subtract
  • No way to do handoff due to lack of iCloud syncing
  • % key does not appear to do anything
  • +/- key seems to be inoperative
  • See index button doesn't do anything
  • Review screen pops up every time the app is opened and 'don't ask again' doesn't work

Requested features

6 requests
  • Add widget
  • Add realistic sounds
  • Add iCloud sync
  • Improve tape clearing method
  • Clarify functionality of % and +/- keys
Show 1 more
  • Improve instructions for less intuitive features

In-app purchases

None

Rolled Paper Calculator

No in-app purchases

None

Adding Machine 10Key Universal

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 Universal free?
Adding Machine 10Key Universal costs $3.99, with no in-app purchases.
Which has better reviews, Rolled Paper Calculator or Adding Machine 10Key Universal?
Rolled Paper Calculator is rated higher. Rolled Paper Calculator averages 4.8 out of 5 from 28 ratings, while Adding Machine 10Key Universal averages 4.7 from 134 ratings.
Do Rolled Paper Calculator or Adding Machine 10Key Universal have ads?
Rolled Paper Calculator shows ads; Adding Machine 10Key Universal does not.
Which is updated more often, Rolled Paper Calculator or Adding Machine 10Key Universal?
Rolled Paper Calculator ships an update every 4 days, and Adding Machine 10Key Universal every 2 months. Most recently, Rolled Paper Calculator was updated on September 23, 2026 and Adding Machine 10Key Universal on September 26, 2026.

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