# Qualifier Plus IIIx/fx vs 12Calc

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 device support there is nothing between them.

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.

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.

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.

## The numbers

| Metric | Qualifier Plus IIIx/fx | 12Calc |
| --- | --- | --- |
| Price | **Free** | $8.99 |
| Rating | [4.9 (3.5K ratings)](https://appshunter.io/ios/app/qualifier-plus-iiixfx/id398253583/reviews) | [4.9 (916 ratings)](https://appshunter.io/ios/app/12calc/id780780002/reviews) |
| Number of ratings | **3.5K** | 916 |
| Positive reviews | 89.2% of reviews | **95.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 months** |
| Monetization | Subscription | **Paid** |
| Best chart rank | #156 | **#47** |
| Size | 28 MB | 6 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Ernest Brock](https://appshunter.io/developer/289555912) |

## What reviewers say

### Qualifier Plus IIIx/fx

[App page](https://appshunter.io/ios/app/qualifier-plus-iiixfx/id398253583)

**Currently charting:** #156 Top Grossing · Finance (US App Store)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $5.99 | per month |
| 1 Year Full Access | $29.99 | per year |

**What reviewers like**

- 🚀 Convenient and portable
- 👍 Powerful and feature-rich
- 💡 Helpful for real estate professionals
- 👍 Familiar interface for existing users
- 💡 Email integration for sharing calculations

**What reviewers complain about**

- 💰 Subscription model is frustrating
- 🐛 Occasional bugs and glitches
- 💰 Perceived as greedy by developers
- 🔒 Requires in-app purchase to use

**Reported bugs**

- Numbers not saving or changing
- Compatibility issues with newer devices

**Requested features**

- Dark mode option
- Basic free version
- Improved user guide and documentation


### 12Calc

[App page](https://appshunter.io/ios/app/12calc/id780780002)

**Currently charting:** #47 Top Paid · Finance (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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 #156 in the App Store charts, and 12Calc at #47. Chart position reflects recent download velocity rather than total install base.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*