Comparison

Loan 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

Loan Calculator‰

Easily calculate loan or mortgage payments. Simply input the loan amount, repayment term, and interest rate to get your estimated monthly payment.

Highlights
  • Loan calculation
  • Mortgage calculation
  • Amount input
  • Term input
  • Rate input
Features
Read full description

This app is perfect to calculate a loan or mortgage. It is very simple just enter your amount, term, and rate.

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

Loan Calculator‰1 screens
Adding Machine 10Key Universal4 screens

Verdict

The call

The clearest difference is price: Loan Calculator‰ at Free against Adding Machine 10Key Universal's $3.99. Loan Calculator‰ also leads on ratings volume (105K vs 134) and rating (4.9 vs 4.7). Adding Machine 10Key Universal's advantage is ads (none vs shown) and update cadence (every 2 months vs every 16 months). 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

Loan 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

Loan Calculator‰ holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Loan Calculator‰ has 105K ratings behind it against 134, so its average is the more settled of the two. Written reviews complicate that: 76% of Loan Calculator‰'s written reviews are positive against 94% of Adding Machine 10Key Universal's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Loan Calculator‰ ships an update every 16 months, Adding Machine 10Key Universal every 2 months. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

Scorecard9 real differences · 2 level
Loan Calculator‰ versus Adding Machine 10Key Universal: the parameters behind the verdict, then further details
ParameterLoan Calculator‰Adding Machine 10Key Universal
PriceFree — better$3.99
Rating4.9 (105K ratings) — better4.7 (134 ratings)
Positive reviews76.5% of reviews94.0% of reviews — better
Number of ratings105K — better134
Update frequencyEvery 16 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
Best chart rank—#111 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.4 — better
Further details — not scored
Size43 MB23 MB
Age rating4+4+
DeveloperTim O's Studios, LLCRichard Silverman

Customer experience

Loan Calculator‰

All ratings105,409 ratings
Positive98.3%
Neutral1.2%
Negative0.6%
Written reviews272 reviews
Positive76.5%
Neutral2.2%
Negative21.3%

Adding Machine 10Key Universal

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

User reviews

Loan Calculator‰

From 105K App Store ratings

What we love

  • 👍 Simple and easy to use
  • 🚀 Straightforward and intuitive
  • 💡 Accurate loan repayment calculations
  • 🚀 Instant results
  • 👍 Helpful for financial decisions

Room to improve

  • 🐛 Incorrect interest calculations
  • 🔍 Limited functionality
  • 💸 Excessive advertisements
  • 🔍 Cannot switch to landscape mode
  • 🔒 Privacy concerns with data collection

Adding Machine 10Key Universal

From 134 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

Bugs and requests

Loan Calculator‰

Reported bugs

3 issues
  • Ad banner covers input fields, making the app unusable
  • Monthly interest figure shown is incorrect
  • App crashes or freezes on certain devices

Requested features

4 requests
  • Add option to calculate weekly or bi-weekly payments
  • Implement amortization schedule feature
  • Allow entering monthly payment to calculate loan amount or interest rate
  • Provide option to remove ads through in-app purchase

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

Loan Calculator‰

No in-app purchases

None

Adding Machine 10Key Universal

No in-app purchases

Questions

Is Loan Calculator‰ free?
Loan 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, Loan Calculator‰ or Adding Machine 10Key Universal?
Loan Calculator‰ is rated higher. Loan Calculator‰ averages 4.9 out of 5 from 105K ratings, while Adding Machine 10Key Universal averages 4.7 from 134 ratings.
Do Loan Calculator‰ or Adding Machine 10Key Universal have ads?
Loan Calculator‰ shows ads; Adding Machine 10Key Universal does not.
Which is updated more often, Loan Calculator‰ or Adding Machine 10Key Universal?
Loan Calculator‰ ships an update every 16 months, and Adding Machine 10Key Universal every 2 months. Most recently, Loan Calculator‰ was updated on October 3, 2026 and Adding Machine 10Key Universal on October 1, 2026.

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