Comparison

Adding Machine 10Key iPhone vs Texas Wells Pro

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 iPhone

This app emulates a traditional 10-key adding machine, offering reversed operator entry and percentage calculation. Users can edit and save paper tapes, export them to various services, and customize keypad sounds. It's designed for accurate and efficient numerical input.

Highlights
  • True 10-key adding machine emulation
  • Reversed operator entry
  • Percentage calculation
  • Editable paper tape history
  • Save and retrieve paper tape files
  • Export paper tape to iBooks, Dropbox, or printing utilities
Currently charting
Read full description

'Adding Machine 10Key for iPhone’ 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 total (*) key can be on either the left or right side (Sharp or Canon style) and the keypad is expandable to show more or less paper tape history. 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, or your favorite printing utility. . TypeTone - a major innovation to aid accurate key entry using audio feedback (iPad version only). . Full size (1:1) keyboard (iPad version only). . 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. ================ 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. Only the iPad version includes ‘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

Texas Wells Pro

Access up-to-date Texas oil and gas drilling permit data in a mobile-friendly format. Features include rough mapping for unassigned locations and operator contact information.

Highlights
  • Pending permit data for Texas oil and gas drilling
  • Rough mapping for unassigned locations
  • Operator contact information
  • Land survey data
  • Total well depth and RRC district
  • Links to Railroad Commission web pages
Read full description

Get mapped and not-yet-mapped pending permit data for Texas oil and gas drilling. * The point of Texas Wells Pro is to present new Texas oil and gas well pending permit data in a mobile-friendly format, provide a rough mapping option for permits that have not yet been assigned a latitude and longitude by the Railroad Commission of Texas (with which homedatasheet.com, Inc. is not affiliated), and automatically list operator contact information so the user doesn't have to go digging for it manually. ***IMPORTANT*** Texas Wells Pro IS NOT appropriate for historical research! It only has access to recent (last week, or so) pending permit data. * Texas Wells Pro lists pending permits back at least a week in ALL counties, but will not list the name of a county if it has not had pending permit activity during the coverage period. If you are not familiar with the counties where oil and gas development is occurring, please consult the Railroad Commission's free Drilling Permit Application Query (http://webapps.rrc.state.tx.us/DP/initializePublicQueryAction.do). Texas Wells Pro typically lists pending permits, mapped and unmapped, along with operator contact information, land survey data, SWR flags (if applicable), total well depth, and Railroad Commission district. All raw pending permit info is supplied by the Railroad Commission of Texas (with which we are not affiliated). We will convert the raw data into a mobile-friendly format and typically present it to you, the user, twice each business day at approximately 3:10 p.m. Central Time and 11:10 p.m. Central Time. You may view the Railroad Commission web page for each selected permit by touching the "Live" button in the Permit Details view. Permit attachments may be accessed by clicking their links. Notes: Locations of pins on the map are approximate and, in some cases, may not capture changes made on pending permits. Locations of original Texas survey centroids are approximate and are NOT to be confused with well locations or proposed well locations. Make sure any telephone solicitations are in compliance with all applicable laws. Airtime charges may apply to telephone calls. Note that a small percentage of operators are outside the U.S. and *significant* airtime charges may apply for international calling. You should never use Texas Wells Pro as the sole basis of financial or safety decisions. Always consult source documents (such as the well plat) on file at the Railroad Commission, and retain the services of State licensed professionals such as attorneys, engineers, and surveyors to assist you. You can contact us regarding any of our apps, before or after purchase, at: support@homedatasheet.com

Screenshots

Adding Machine 10Key iPhone4 screens
Texas Wells Pro4 screens

Verdict

The call

The clearest difference is review sentiment: Adding Machine 10Key iPhone at 95% against Texas Wells Pro's 0%. Adding Machine 10Key iPhone also leads on rating (4.6 vs 3.0) and update cadence (every 5 weeks vs every 29 months). Texas Wells Pro's advantage is price (Free vs $2.99). On ads, in-app purchases, monetization model 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

Texas Wells Pro is free to download; Adding Machine 10Key iPhone 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 iPhone holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Adding Machine 10Key iPhone has 131 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 95% of Adding Machine 10Key iPhone's written reviews are positive against 0% of Texas Wells Pro's.

UpkeepUpdate frequency

Adding Machine 10Key iPhone ships an update every 5 weeks, Texas Wells Pro every 29 months. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

Scorecard6 real differences · 5 level
Adding Machine 10Key iPhone versus Texas Wells Pro: the parameters behind the verdict, then further details
ParameterAdding Machine 10Key iPhoneTexas Wells Pro
Price$2.99Free — better
Rating4.6 (131 ratings) — better3.0 (4 ratings)
Positive reviews95.2% of reviews — better0.0% of reviews
Number of ratings131 — better4
Update frequencyEvery 5 weeks — betterEvery 29 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#125 — better—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.4 — better13.0
Further details — not scored
Size10 MB2 MB
Age rating4+4+
DeveloperRichard Silvermanhomedatasheet.com, Inc.

Customer experience

Adding Machine 10Key iPhone

All ratings131 ratings
Positive92.4%
Neutral3.1%
Negative4.6%
Written reviews62 reviews
Positive95.2%
Neutral0.0%
Negative4.8%

Texas Wells Pro

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Adding Machine 10Key iPhone

Reported bugs

9 issues
  • Watermarks premium PDF exports
  • Haphazardly laid out controls
  • Touchy sound toggle in free version
  • Keypad glitch on re-opening
  • Nagging review requests (Don't ask again button not working)
Show 4 more
  • Incessant review requests (Don't Ask Again option not working)
  • Clearing the tape is a guessing exercise (I button behavior inconsistent)
  • Custom keypad feature removed from iPhone version
  • Inconsistent sound and clear button behavior

Requested features

10 requests
  • Eliminate tape for bigger total screen
  • Add square root feature
  • Bring back custom keypad feature on iPhone version
  • Allow more than 350 lines
  • Allow more notations on tape
Show 5 more
  • Ability to custom label groups
  • Fix period button centering
  • Consider changing app icon
  • Preferences for number format (input and output commas)
  • More control over number formats

Texas Wells Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Adding Machine 10Key iPhone

No in-app purchases

None

Texas Wells Pro

No in-app purchases

Questions

Is Adding Machine 10Key iPhone free?
Adding Machine 10Key iPhone costs $2.99, with no in-app purchases.
Is Texas Wells Pro free?
Texas Wells Pro is free to download, with no in-app purchases.
Which has better reviews, Adding Machine 10Key iPhone or Texas Wells Pro?
Adding Machine 10Key iPhone is rated higher. Adding Machine 10Key iPhone averages 4.6 out of 5 from 131 ratings, while Texas Wells Pro averages 3.0 from 4 ratings.
Do Adding Machine 10Key iPhone or Texas Wells Pro have ads?
Neither Adding Machine 10Key iPhone nor Texas Wells Pro shows ads.
Which is updated more often, Adding Machine 10Key iPhone or Texas Wells Pro?
Adding Machine 10Key iPhone ships an update every 5 weeks, and Texas Wells Pro every 29 months. Most recently, Adding Machine 10Key iPhone was updated on October 14, 2026 and Texas Wells Pro on October 2, 2026.

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