Comparison

Adding Machine 10Key Universal vs BA Financial Calculator

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

Head to head
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)

About

BA Financial Calculator

Emulates the TI BAII Plus financial calculator, offering identical functionality with a clean and user-friendly interface. It's designed for finance professionals and students preparing for exams like CFA, FRM, and CPA.

Highlights
  • TI BAII Plus emulator
  • Identical functionality
  • User-friendly interface
  • Fast and reliable
  • Exam preparation tool
Features
Read full description

This app is a full-featured emulator of the TI BAII Plus financial calculator, developed specifically for CFA/FRM candidates and finance professionals. It replicates all functions of the original calculator with a clean, fast, and user-friendly interface. - Identical functionality to the TI BAII Plus - Fast, reliable, and easy to use - Ideal for finance and accounting students and professionals - Optimal for CFA, FRM and CPA exam preparation - Regularly tested and updated Created and supported by a dedicated developer. For questions or feedback, please contact cfa.calculator@gmail.com.

Screenshots

Adding Machine 10Key Universal4 screens
BA Financial Calculator3 screens

Verdict

The call

The clearest difference is price: BA Financial Calculator at Free against Adding Machine 10Key Universal's $3.99. BA Financial Calculator also leads on ratings volume (3.3K vs 136). Adding Machine 10Key Universal's advantage is ads (none vs shown) and review sentiment (94% vs 65%). 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

BA Financial 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 — 4.7 for Adding Machine 10Key Universal against 4.8 for BA Financial Calculator. That said, the two scores are not equally well evidenced: BA Financial Calculator has 3.3K ratings behind it against 136, so its average is the more settled of the two. Written reviews are what separate them: 94% of Adding Machine 10Key Universal's written reviews are positive against 65% of BA Financial Calculator's.

UpkeepUpdate frequency

Adding Machine 10Key Universal ships an update every 2 months, BA Financial Calculator every 4 months. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

Scorecard8 real differences · 3 level
Adding Machine 10Key Universal versus BA Financial Calculator: the parameters behind the verdict, then further details
ParameterAdding Machine 10Key UniversalBA Financial Calculator
Price$3.99Free — better
Rating4.7 (136 ratings)4.8 (3.3K ratings) — better
Positive reviews94.0% of reviews — better64.9% of reviews
Number of ratings1363.3K — better
Update frequencyEvery 2 months — betterEvery 4 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
Best chart rank#179 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.4 — better15.1
Further details — not scored
Size23 MB27 MB
Age rating4+4+
DeveloperRichard SilvermanAngel Montana

Customer experience

Adding Machine 10Key Universal

All ratings136 ratings
Positive92.6%
Neutral1.5%
Negative5.9%
Written reviews50 reviews
Positive94.0%
Neutral0.0%
Negative6.0%

BA Financial Calculator

All ratings3,312 ratings
Positive94.6%
Neutral1.0%
Negative4.4%
Written reviews208 reviews
Positive64.9%
Neutral4.8%
Negative30.3%

User reviews

Adding Machine 10Key Universal

From 136 App Store ratings

What we love

  • 👍 Easy to use
  • 🧮 Acts like an adding machine
  • 🧾 Digital tape for review
  • 🖨️ Can print tape
  • 💾 Can save/export results

Room to improve

  • 🐛 Outdated and no support
  • 🐛 Doesn't work for new iPad
  • 🐛 Total only shows non-zero decimals
  • 🐛 Ridiculous method to clear tape
  • 🐛 % key not functional

BA Financial Calculator

From 3.3K App Store ratings

What we love

  • 🚀 Great app
  • 🚀 Exactly like the real thing
  • 👍 Useful
  • 👍 Solid app
  • 👍 Fantastic

Room to improve

  • 🐛 Incorrect calculations
  • 🐛 Not accurate
  • 🐛 Précision à revoir
  • 🐛 Wrong answers
  • 🐛 TVM DOES NOT WORK! USELESS!

Bugs and 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

BA Financial Calculator

Reported bugs

6 issues
  • Incorrect calculations
  • Calculations not accurate
  • TVM functions not working
  • Errors when trying to use certain features
  • App crashes or freezes
Show 1 more
  • Incompatibility with certain devices or OS versions

Requested features

7 requests
  • Dark mode option
  • Advanced analytics dashboard
  • Instructions on how to use the calculator
  • Option to remove ads
  • Support for landscape mode and screen split on iPad
Show 2 more
  • Ability to change the number of decimal places shown
  • Support for more advanced functions like Payback Period and MIRR

In-app purchases

None

Adding Machine 10Key Universal

No in-app purchases

None

BA Financial Calculator

No in-app purchases

Questions

Is Adding Machine 10Key Universal free?
Adding Machine 10Key Universal costs $3.99, with no in-app purchases.
Is BA Financial Calculator free?
BA Financial Calculator is free to download, with no in-app purchases.
Which has better reviews, Adding Machine 10Key Universal or BA Financial Calculator?
BA Financial Calculator is rated higher. Adding Machine 10Key Universal averages 4.7 out of 5 from 136 ratings, while BA Financial Calculator averages 4.8 from 3.3K ratings.
Do Adding Machine 10Key Universal or BA Financial Calculator have ads?
BA Financial Calculator shows ads; Adding Machine 10Key Universal does not.
Which is updated more often, Adding Machine 10Key Universal or BA Financial Calculator?
Adding Machine 10Key Universal ships an update every 2 months, and BA Financial Calculator every 4 months. Most recently, Adding Machine 10Key Universal was updated on October 18, 2026 and BA Financial Calculator on October 16, 2026.

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