Comparison

Adding Machine 10Key Univ Lite vs The Checkbook

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 Univ Lite

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 edit and save paper tape files. The iPad version includes a full-size keypad with audio feedback for enhanced accuracy.

Highlights
  • 10-key adding machine emulation
  • Reversed operator entry
  • Percentage calculation
  • Paper tape editing and saving
  • Export paper tape files
  • TypeTone audio feedback (iPad)
Read full description

'Adding Machine 10Key Univ Lite' 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). 'Lite' Version Description ================== This is the full version of Adding Machine 10Key Univ, but with a reduced number of paper tape lines & other limitations. You can find the full version by searching for 'Adding Machine 10Key Universal' by Richard Silverman in the App Store. ==== 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). . Full size (1:1) keyboard (iPad version). . 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. . 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). ============================ INCLUDED IN THIS LITE VERSION: . 16 lines of paper tape history . Limited to 2 keypad sounds . Only save 2 paper histories to disk . Ads for Interlocken products at bottom of display UPGRADE TO THE FULL VERSION IN THE APP STORE 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

The Checkbook

Manage your finances on the go with this transaction tracker. Easily record income and expenses, schedule upcoming bills, and reconcile with your bank statements for accurate balance tracking. Offers multiple accounts, customizable themes, and secure access.

Highlights
  • Real-time transaction tracking
  • Upcoming bill and deposit scheduling
  • Bank account reconciliation
  • Multiple account management
  • Customizable color themes
  • Transaction search and filtering
  • Recurring transaction setup
Features
Currently charting
Read full description

Finance At Your Fingertips Track your financial transactions on-the-go in real time. Enter upcoming bill payments and deposits to see how your account balance will change. Reconcile each transaction against your bank account to balance your checkbook and ensure accuracy to the penny. * No ads. * Quick entry screen for new transactions to keep up with spending while you're on the move. * Create a new transaction in seconds with type ahead feature for common transactions. * Manage transactions in multiple accounts. * Customize color theme for each account. * Search for transactions. * Toggle visibility of reconciled transactions to see what hasn't cleared your bank account yet. * Set up recurring transactions. * Transfer money between accounts. * Basic reporting to view spending or income by category and daily spending. * Export transactions to CSV file. * Enable Face ID / Touch ID to secure access to your financial data. * Turn on iCloud Drive data storage to sync transactions across multiple devices. * Share every new transaction with a joint account owner via email or Shared Storage (subscription required) to keep app in sync for different users. Privacy Note: The developer does not collect any data from this app for the default local device or iCloud storage options. The developer only securely stores data for the Shared Storage option (subscription required) for the purpose of sharing and syncing the data with your invited users. See Privacy Policy for more details.

Screenshots

Adding Machine 10Key Univ Lite4 screens
The Checkbook4 screens

Verdict

The call

The clearest difference is price: Adding Machine 10Key Univ Lite at Free against The Checkbook's $4.99. Adding Machine 10Key Univ Lite also leads on in-app purchases (none vs 2) and device support (3 vs 1). The Checkbook's advantage is rating (4.8 vs 4.3) and update cadence (fortnightly vs every 6 weeks). On review sentiment, ads and monetization model 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

Adding Machine 10Key Univ Lite is free to download; The Checkbook costs $4.99 up front. The Checkbook sells 2 in-app purchases, starting at $1.99 per month. Adding Machine 10Key Univ Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

The Checkbook holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: The Checkbook has 970 ratings behind it against 192, so its average is the more settled of the two. Written reviews complicate that: 80% of Adding Machine 10Key Univ Lite's written reviews are positive against 76% of The Checkbook's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Adding Machine 10Key Univ Lite ships an update every 6 weeks, The Checkbook fortnightly. The most recent releases landed on August 26, 2026 and September 27, 2026 respectively.

Scorecard8 real differences · 3 level
Adding Machine 10Key Univ Lite versus The Checkbook: the parameters behind the verdict, then further details
ParameterAdding Machine 10Key Univ LiteThe Checkbook
PriceFree — better$4.99
Rating4.3 (192 ratings)4.8 (970 ratings) — better
Positive reviews79.6% of reviews — better75.9% of reviews
Number of ratings192970 — better
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
Best chart rank—#8 — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.4 — better16.4
Further details — not scored
Size23 MB61 MB
Age rating+44+
DeveloperRichard SilvermanFour One Four 213, LLC

Customer experience

Adding Machine 10Key Univ Lite

All ratings192 ratings
Positive86.5%
Neutral6.3%
Negative7.3%
Written reviews49 reviews
Positive79.6%
Neutral8.2%
Negative12.2%

The Checkbook

All ratings970 ratings
Positive95.3%
Neutral2.0%
Negative2.8%
Written reviews108 reviews
Positive75.9%
Neutral9.3%
Negative14.8%

User reviews

Adding Machine 10Key Univ Lite

From 192 App Store ratings

What we love

  • 👍 Easy to use
  • 👍 Works like a real adding machine
  • 👍 Tape feature is useful
  • 👍 Large, clear numbers
  • 👍 Good for bookkeeping

Room to improve

  • 💸 Paid version is expensive
  • 📉 Ads take up screen space on iPhone
  • 🤏 Keys are too small on lite version
  • 🗄️ Lite version has limited lines
  • 💡 Trailing zeros not displayed

The Checkbook

From 970 App Store ratings

What we love

  • 💻 Easy to use
  • 🔍 Helps track finances
  • 📱 Convenient mobile app
  • 🧮 Simple check register
  • 🔒 Secure with Face ID

Room to improve

  • 🔢 Limited account name length
  • 🔍 Difficult to view past transactions
  • 🔢 No custom currency options
  • 🐛 Data loss issues
  • 🚫 No iPad-optimized layout

Bugs and requests

Adding Machine 10Key Univ Lite

Reported bugs

4 issues
  • 3 digits get frozen during calculations
  • Crashed and lost data
  • The "don't ask again" button for reviews does nothing
  • App freezes when switching apps

Requested features

8 requests
  • Ability to set automatic cents
  • Two sales tax rates or ability to deselect items from tax
  • More lines in the free version
  • More screen space on iPhone
  • Ability to add more before clearing
Show 3 more
  • Unlimited tape length
  • Dark mode option
  • One-button clear tape option

The Checkbook

Reported bugs

3 issues
  • Data loss and sync issues
  • Incorrect transaction display
  • Recurring transactions not working as expected

Requested features

6 requests
  • 📊 Spending reports and analytics
  • 🔁 More recurring transaction options
  • 🖨️ Check printing capability
  • 🔀 Ability to split transactions
  • 🔄 Easier transaction editing/deletion
Show 1 more
  • 🔒 Backup and restore options

In-app purchases

None

Adding Machine 10Key Univ Lite

No in-app purchases

2 purchases

The Checkbook

Subscriptions2
  • Shared Storage - Monthly$1.991 Month
  • Shared Storage - Annual7 Days trial$19.991 Year

Questions

Is Adding Machine 10Key Univ Lite free?
Adding Machine 10Key Univ Lite is free to download, with no in-app purchases.
Is The Checkbook free?
The Checkbook costs $4.99, and also offers in-app purchases.
Which has better reviews, Adding Machine 10Key Univ Lite or The Checkbook?
The Checkbook is rated higher. Adding Machine 10Key Univ Lite averages 4.3 out of 5 from 192 ratings, while The Checkbook averages 4.8 from 970 ratings.
Do Adding Machine 10Key Univ Lite or The Checkbook have ads?
Neither Adding Machine 10Key Univ Lite nor The Checkbook shows ads.
Which is updated more often, Adding Machine 10Key Univ Lite or The Checkbook?
Adding Machine 10Key Univ Lite ships an update every 6 weeks, and The Checkbook fortnightly. Most recently, Adding Machine 10Key Univ Lite was updated on August 26, 2026 and The Checkbook on September 27, 2026.

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