Comparison

Qualifier Plus IIIx/fx vs LockInCalc

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

LockInCalc

Features
Read full description

Introducing the Mortgage Lock Price Calculator, your all-in-one tool for accurately calculating mortgage prices. This powerful app takes into account discount points, origination fees, loan level pricing adjustments, and lender credits, allowing you to calculate the total cost in both dollars and percent. With this Mortgage Lock Price Calculator, you can perform multiple calculations with ease and accuracy. The app also provides helpful alerts to ensure accurate data entry, making the process smoother and more efficient. Take control of your mortgage calculations today with the Mortgage Lock Price Calculator.

Screenshots

Qualifier Plus IIIx/fx4 screens
LockInCalc4 screens

Verdict

The call

The clearest difference is in-app purchases: LockInCalc at none against Qualifier Plus IIIx/fx's 2. Qualifier Plus IIIx/fx's advantage is chart position (#130 vs unranked) and iOS requirement (15.0 vs 17.2). On price, update cadence, ads 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

Both are free to download. Qualifier Plus IIIx/fx sells 2 in-app purchases, starting at $5.99 per month. LockInCalc asks for nothing beyond the download.

UpkeepUpdate frequency

Qualifier Plus IIIx/fx ships an update every 10 months, LockInCalc every 7 months. The most recent releases landed on October 21, 2026 and September 26, 2026 respectively.

Scorecard3 real differences · 8 level
Qualifier Plus IIIx/fx versus LockInCalc: the parameters behind the verdict, then further details
ParameterQualifier Plus IIIx/fxLockInCalc
PriceFreeFree
Rating4.9 (3.5K ratings) — better—
Positive reviews89.2% of reviews—
Number of ratings3.5K — better—
Update frequencyEvery 10 monthsEvery 7 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
Best chart rank#130 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.2
Further details — not scored
Size28 MB1 MB
Age rating12+17+
DeveloperCalculated IndustriesNicholas Pompea

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

LockInCalc

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

LockInCalc

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 LockInCalc free?
LockInCalc is free to download, with no in-app purchases.
Do Qualifier Plus IIIx/fx or LockInCalc have ads?
Neither Qualifier Plus IIIx/fx nor LockInCalc shows ads.
Which is updated more often, Qualifier Plus IIIx/fx or LockInCalc?
Qualifier Plus IIIx/fx ships an update every 10 months, and LockInCalc every 7 months. Most recently, Qualifier Plus IIIx/fx was updated on October 21, 2026 and LockInCalc on September 26, 2026.

Other comparisons