Comparison

Adding Machine 10Key for iPad vs Bills io

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

Bills io

Organize and track all your recurring and one-off expenses with this privacy-focused finance app. Get timely notifications for upcoming bills and analyze your spending patterns. Data syncs securely across your Apple devices via iCloud.

Highlights
  • Organize bills with tags
  • Track expenses by account
  • Log payment history
  • Export data to Excel/Numbers
  • Receive bill notifications
  • Sync across Apple devices
Features
Read full description

Know exactly where your money goes — without giving up your privacy. Bills io is the simple, privacy-first way to track your recurring expenses, subscriptions, and one-off bills. No bank connection required. No data sold. No algorithms watching your finances. Just you and your bills, organized. YOUR MONEY. YOUR DATA. Bills io syncs privately through your iCloud account using Apple’s CloudKit. Your financial data never touches our servers — we literally can’t see it. Everything stays between you, your device, and your iCloud. STOP LOSING MONEY TO FORGOTTEN SUBSCRIPTIONS The average person is paying for 2–3 subscriptions they’ve forgotten about. Bills io helps you see every recurring charge in one place so nothing slips through the cracks. BILL TRACKING Organize bills with tags and accounts. See exactly how much hits your credit card each month across all your subscriptions — then plan around it. PAYMENT LOG Record payments as you make them. Add notes with Markdown support for links and details. Export everything to CSV whenever you need it. OVERVIEW & NOTIFICATIONS See what’s due this week or month at a glance. Get notified before auto-withdrawals hit or when it’s time to pay manually — all handled locally, never from a server. WORKS ACROSS APPLE DEVICES iPhone, iPad, and Mac. One purchase, everywhere you already work. ◆ FREE TIER Bills io is free — and we mean it. The core experience is fully featured with no paywalls on the essentials. Premium is there if you want deeper organization tools or just want to support an indie developer keeping your data private. ◆ PREMIUM Bills io is fully usable for free. Premium adds powerful organization upgrades for power users — and if you love the app, it’s the best way to support independent development. Available as monthly, annual, or a one-time lifetime purchase. ◆ Payment graphs & average monthly cost charts ◆ Collections, filtering by account & tags ◆ Face ID / Touch ID lock ◆ Custom notification times ◆ CSV export for bills & payments ◆ Payment notes ◆ All future premium features Privacy Policy: https://billsio.com/pages/privacy/ Terms of Use: https://billsio.com/pages/tos/ EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Bills io4 screens

Verdict

The call

The clearest difference is price: Bills io at Free against Adding Machine 10Key for iPad's $2.99. Bills io also leads on device support (3 vs 1). Adding Machine 10Key for iPad's advantage is in-app purchases (none vs 3) and review sentiment (94% vs 74%). On rating, ratings volume, update cadence and ads 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

Bills io is free to download; Adding Machine 10Key for iPad costs $2.99 up front. Bills io sells 3 in-app purchases, starting at $0.99 per month. Adding Machine 10Key for iPad asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Adding Machine 10Key for iPad against 4.7 for Bills io. Both are backed by a comparable volume of ratings — 77 and 34 respectively. Written reviews are what separate them: 94% of Adding Machine 10Key for iPad's written reviews are positive against 74% of Bills io's.

UpkeepUpdate frequency

Adding Machine 10Key for iPad ships an update every 2 months, Bills io every 6 weeks. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.

Scorecard6 real differences · 4 level
Adding Machine 10Key for iPad versus Bills io: the parameters behind the verdict, then further details
ParameterAdding Machine 10Key for iPadBills io
Price$2.99Free — better
Rating4.8 (77 ratings) — better4.7 (34 ratings)
Positive reviews93.8% of reviews — better73.7% of reviews
Number of ratings77 — better34
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPadiPhone, iPad, Mac — better
Requires iOS12.4 — better26.0
Further details — not scored
Size22 MB45 MB
Age rating4+17+
DeveloperRichard SilvermanStudio Ember LLC

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%

Bills io

All ratings34 ratings
Positive91.2%
Neutral0.0%
Negative8.8%
Written reviews19 reviews
Positive73.7%
Neutral0.0%
Negative26.3%

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

Bills io

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Adding Machine 10Key for iPad

No in-app purchases

3 purchases

Bills io

Subscriptions2
  • Premium (1 Month)$0.991 Month
  • Premium (1 Year)$9.991 Year
One-time1
  • Premium (Lifetime)$39.99

Questions

Is Adding Machine 10Key for iPad free?
Adding Machine 10Key for iPad costs $2.99, with no in-app purchases.
Is Bills io free?
Bills io is free to download, with in-app purchases available.
Which has better reviews, Adding Machine 10Key for iPad or Bills io?
Adding Machine 10Key for iPad is rated higher. Adding Machine 10Key for iPad averages 4.8 out of 5 from 77 ratings, while Bills io averages 4.7 from 34 ratings.
Do Adding Machine 10Key for iPad or Bills io have ads?
Neither Adding Machine 10Key for iPad nor Bills io shows ads.
Which is updated more often, Adding Machine 10Key for iPad or Bills io?
Adding Machine 10Key for iPad ships an update every 2 months, and Bills io every 6 weeks. Most recently, Adding Machine 10Key for iPad was updated on October 1, 2026 and Bills io on September 29, 2026.

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