Comparison

Qualifier Plus IIIx/fx vs 12Calc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Qualifier Plus IIIx/fx

This app provides advanced real estate and mortgage finance calculations for professionals. It offers instant solutions for loan payments, buyer qualifying, cash flow analysis, and more, directly on your mobile device.

Highlights
  • Instant loan payment calculations (P&I, PITI)
  • Buyer qualifying for conventional, FHA, and VA loans
  • Complete cash flow solutions (IRR, NPV, NFV)
  • Amortization schedules with remaining balances
  • Bi-weekly loans and ARMS calculations
  • Rent vs. Buy comparisons
  • Date Math function
Features
Currently charting
Read full description

Two in one: the official Qualifier Plus® IIIx from Calculated Industries for your iPhone and iPad includes two models: #3415 and #3430 (Qualifier Plus IIIfx). And while perhaps obvious, if you change from an iOS device to a non-iOS device, you WILL need to buy a new license as they are incompatible. Advanced Residential and Commercial Mortgage Finance Calculator for Agents, Brokers, Investors, Attorneys, Loan Officers and other Mortgage Industry Professionals The Qualifier Plus® IIIx app from Calculated Industries gives real estate and mortgage professionals the power, portability and ease-of-use of the Qualifier Plus IIIx and Qualifier Plus IIIfx on your iPhone or iPad. Get instant access to P&I, PITI and total loan payments for conventional, FHA and VA loans. Includes complete buyer qualifying and more. Ideal for all real estate finance professionals including agents, brokers, investors, mortgage lenders, title offices and trainers. Need answers to both common and advanced real estate finance problems? Just pull out your iPhone or iPad, tap on the Qualifier Plus icon, and you’ll have the answers for your client in seconds. • Complete Cash Flow solutions including Internal Rate of Return, Net Present Value and Net Future Value • Qualifying keys provide on-the-spot buyer qualifying for conventional, FHA and VA loans • Instantly solve your clients’ real estate finance questions • E-mail loan worksheets to your clients from your iPhone Built-in functions help you find instant solutions for: • Calculate IRR for multiple cash flows • Amortizations with remaining balances • Bi-weekly loans and ARMS • Rent vs. Buy comparisons and estimated tax savings • Future Value, property appreciation FEATURES: • Created by Calculated Industries, the originator of the Real Estate Master and Qualifier Plus Real Estate and mortgage calculators • Amortization screen lets you see all amortization or loan data at once and e-mail it directly from the app screen on your phone • Built-in help – just press and hold the desired key for full, clear definitions, explanations and examples of keystrokes Time-saving Utilities Include: • Date Math function lets you instantly see closing and expire dates • Triple Zero key saves time and keystrokes • Memory Function • User-Definable Preferences — define and store payments per year, taxes and insurance Special Functions: • Entry-editing backspace key – with a swipe of a finger • Works as a standard calculator • Free User Guide available at www.calculated.com SUBSCRIPTION INFORMATION: The first 7 days are free. Subscriptions offered will automatically renew at the end of the chosen period. Payment will be charged to your Apple account upon purchase confirmation. The subscription will automatically renew unless auto-renew is turned off or subscription is canceled in settings at least one day (24-hours) before the subscription period ends. You can manage your subscription and turn off auto-renewal in your Apple account Settings > Account (Apple ID) > Subscriptions. TRADEMARKS: Qualifer Plus® is a registered trademark of Calculated Industries, Inc.

About

12Calc

This app provides a full-featured financial calculator experience, replicating the functionality of a popular physical model. It offers an audit tape for tracking calculations, a unit converter with currency exchange rates, and various worksheets with interactive graphs for financial analysis. Optimized for modern devices with high-resolution graphics and support for multiple orientations.

Highlights
  • HP12C emulation
  • Audit tape for calculation history
  • Unit and currency converter
  • Interactive financial worksheets
  • Portrait and landscape views
  • Contextual help and tutorials
  • HD graphics with color themes
Features
Currently charting
Read full description

12Calc is a full version of the well known HP12C for the iPhone and iPad. It also includes an audit tape, unit converter, worksheets, rotated views, user guide and HD graphics optimized for iPad and iPhone retina displays. •Runs in 64 bit mode on the latest iOS release and new iPads and iPhones. •Calculations are highly accurate and blazing fast. No more "running" flashing displays for amortizations, depreciation schedules or interest calculations. Work as fast as you can type. •Audit Tape: The audit tape keeps a record of your calculations. You can review, mail, text, share or print the tape. •Unit Converter: Convert between a wide variety of common units and currencies. Currency rates can be downloaded from the internet. •Work Sheets with interactive graphs: Auto Purchase Black-Scholes Bond Break-even Cash Flow analysis Currency Date Depreciation Interest Conversion Lease Loan Amortization (includes option for Canadian mortgages) Margin&Markup Refinance Statistics Tip TVM •Views for all orientations: Portrait and landscape renderings of the full keyboard are provided for iPhone and iPad. The iPad version includes slide over and multiple split view displays as well as side-by-side display of the help page, audit tape, tvm mortgage table or program variables. •Built-in contextual help: Touch the ? key for a description of any keyboard function with examples of use. If you are just learning or can't remember how to use a function- just touch the ? key. Includes tutorials on how to use reverse Polish notation (RPN) and how to solve time value of money problems. •HD Graphics: Graphics optimized for both retina and standard resolution screens. Choose from multiple color schemes including gold, rose gold, brass, copper, silver and several color tints.

Screenshots

Qualifier Plus IIIx/fx4 screens
12Calc4 screens

Verdict

The call

The clearest difference is price: Qualifier Plus IIIx/fx at Free against 12Calc's $8.99. Qualifier Plus IIIx/fx also leads on ratings volume (3.5K vs 916) and iOS requirement (15.0 vs 17.6). 12Calc's advantage is in-app purchases (none vs 2) and update cadence (every 5 months vs every 10 months). On rating, review sentiment, ads and chart position 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

Qualifier Plus IIIx/fx is free to download; 12Calc costs $8.99 up front. Qualifier Plus IIIx/fx sells 2 in-app purchases, starting at $5.99 per month. 12Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Qualifier Plus IIIx/fx against 4.9 for 12Calc. Both are backed by a comparable volume of ratings — 3.5K and 916 respectively. Written reviews are what separate them: 89% of Qualifier Plus IIIx/fx's written reviews are positive against 96% of 12Calc's.

UpkeepUpdate frequency

Qualifier Plus IIIx/fx ships an update every 10 months, 12Calc every 5 months. The most recent releases landed on October 18, 2026 and October 17, 2026 respectively.

Scorecard6 real differences · 5 level
Qualifier Plus IIIx/fx versus 12Calc: the parameters behind the verdict, then further details
ParameterQualifier Plus IIIx/fx12Calc
PriceFree — better$8.99
Rating4.9 (3.5K ratings)4.9 (916 ratings)
Positive reviews89.2% of reviews95.9% of reviews — better
Number of ratings3.5K — better916
Update frequencyEvery 10 monthsEvery 5 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
Best chart rank#140#120 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size28 MB6 MB
Age rating12+4+
DeveloperCalculated IndustriesErnest Brock

Customer experience

Qualifier Plus IIIx/fx

All ratings3,466 ratings
Positive98.5%
Neutral0.6%
Negative0.9%
Written reviews74 reviews
Positive89.2%
Neutral1.4%
Negative9.5%

12Calc

All ratings916 ratings
Positive98.3%
Neutral1.1%
Negative0.7%
Written reviews197 reviews
Positive95.9%
Neutral1.5%
Negative2.5%

Bugs and requests

Qualifier Plus IIIx/fx

Reported bugs

2 issues
  • Numbers not saving or changing
  • Compatibility issues with newer devices

Requested features

3 requests
  • Dark mode option
  • Basic free version
  • Improved user guide and documentation

12Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Qualifier Plus IIIx/fx

Subscriptions2
  • 1 Month Full Access7 Days trial$5.991 Month
  • 1 Year Full Access7 Days trial$29.991 Year
None

12Calc

No in-app purchases

Questions

Is Qualifier Plus IIIx/fx free?
Qualifier Plus IIIx/fx is free to download, with in-app purchases available.
Is 12Calc free?
12Calc costs $8.99, with no in-app purchases.
Which has better reviews, Qualifier Plus IIIx/fx or 12Calc?
Qualifier Plus IIIx/fx and 12Calc are both rated 4.9 out of 5 on the App Store, from 3.5K and 916 ratings respectively.
Do Qualifier Plus IIIx/fx or 12Calc have ads?
Neither Qualifier Plus IIIx/fx nor 12Calc shows ads.
Which is updated more often, Qualifier Plus IIIx/fx or 12Calc?
Qualifier Plus IIIx/fx ships an update every 10 months, and 12Calc every 5 months. Most recently, Qualifier Plus IIIx/fx was updated on October 18, 2026 and 12Calc on October 17, 2026.
Which is more popular, Qualifier Plus IIIx/fx or 12Calc?
Qualifier Plus IIIx/fx currently peaks at #140 in the App Store charts, and 12Calc at #120. Chart position reflects recent download velocity rather than total install base.

Other comparisons