Comparison

Adding Machine 10Key for iPad vs TRUSTtrak

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 for iPad

This app emulates a traditional 10-key adding machine with advanced features for iPad users. It offers a full-size keypad with audio feedback, editable paper tapes, and multiple export options for your calculations.

Highlights
  • 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
Read full description

'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)

About

TRUSTtrak

Monitor your investment portfolio performance and account balances with clear visuals and breakdowns. Track your progress against the market to understand your path to wealth, all from your iPhone or iPad.

Highlights
  • View portfolio balances
  • Account summaries with allocations
  • Interactive dashboards
  • Visual graphs of accounts
  • Market performance comparison
Features
Read full description

Always on the go with little time to check your investment accounts? Curious how your account is performing against the market? The TRUSTtrak app lets you quickly view your portfolio balances without interrupting your daily life. With stunning visuals and account breakdowns you are easily able to gauge your path to wealth on the iPhone or iPad. The TRUSTtrak app puts your investment information at your fingertips with tools such as: - Account Summary Easily view the most recent summary for your accounts with allocations. - Dashboards Scroll through various dashboards with account breakdowns and visual graphs of your accounts. - Performance Track how your account is performing compared to the market.

Screenshots

TRUSTtrak2 screens

Verdict

The call

The clearest difference is price: TRUSTtrak at Free against Adding Machine 10Key for iPad's $2.99. Adding Machine 10Key for iPad's advantage is rating (4.8 vs 2.8) and review sentiment (94% vs 67%). On ads, 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

TRUSTtrak is free to download; Adding Machine 10Key for iPad costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Adding Machine 10Key for iPad holds the better App Store score, 4.8 against 2.8. That said, the two scores are not equally well evidenced: Adding Machine 10Key for iPad has 77 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 94% of Adding Machine 10Key for iPad's written reviews are positive against 67% of TRUSTtrak's.

UpkeepUpdate frequency

Adding Machine 10Key for iPad ships an update every 2 months, TRUSTtrak every 5 months. The most recent releases landed on October 1, 2026 and September 25, 2026 respectively.

Scorecard7 real differences · 3 level
Adding Machine 10Key for iPad versus TRUSTtrak: the parameters behind the verdict, then further details
ParameterAdding Machine 10Key for iPadTRUSTtrak
Price$2.99Free — better
Rating4.8 (77 ratings) — better2.8 (5 ratings)
Positive reviews93.8% of reviews — better66.7% of reviews
Number of ratings77 — better5
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPadiPhone, iPad — better
Requires iOS12.4 — better16.0
Further details — not scored
Size22 MB86 MB
Age rating4+4+
DeveloperRichard SilvermanInfovisa, Inc.

Customer experience

Adding Machine 10Key for iPad

All ratings77 ratings
Positive94.8%
Neutral1.3%
Negative3.9%
Written reviews64 reviews
Positive93.8%
Neutral3.1%
Negative3.1%

TRUSTtrak

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Adding Machine 10Key for iPad

Reported bugs

2 issues
  • Memory doesn't go past six figures
  • Cannot use memory to calculate GST and VAT values efficiently

Requested features

5 requests
  • Ability to dictate numbers and operations verbally
  • More functions like Tax+, Tax-, MU
  • Ability to write notes beside numbers
  • Dark mode option
  • Make it more intuitive

TRUSTtrak

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Adding Machine 10Key for iPad

No in-app purchases

None

TRUSTtrak

No in-app purchases

Questions

Is Adding Machine 10Key for iPad free?
Adding Machine 10Key for iPad costs $2.99, with no in-app purchases.
Is TRUSTtrak free?
TRUSTtrak is free to download, with no in-app purchases.
Which has better reviews, Adding Machine 10Key for iPad or TRUSTtrak?
Adding Machine 10Key for iPad is rated higher. Adding Machine 10Key for iPad averages 4.8 out of 5 from 77 ratings, while TRUSTtrak averages 2.8 from 5 ratings.
Do Adding Machine 10Key for iPad or TRUSTtrak have ads?
Neither Adding Machine 10Key for iPad nor TRUSTtrak shows ads.
Which is updated more often, Adding Machine 10Key for iPad or TRUSTtrak?
Adding Machine 10Key for iPad ships an update every 2 months, and TRUSTtrak every 5 months. Most recently, Adding Machine 10Key for iPad was updated on October 1, 2026 and TRUSTtrak on September 25, 2026.

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