# QQPIECHART vs ApexOS Mobile

The clearest difference is rating: QQPIECHART at 5.0 against ApexOS Mobile's 4.2. QQPIECHART also leads on iOS requirement (13.4 vs 16.4). ApexOS Mobile's advantage is in-app purchases (none vs 3) and update cadence (weekly vs every 3 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. QQPIECHART sells 3 in-app purchases, starting at $4.99 per month. ApexOS Mobile asks for nothing beyond the download.

QQPIECHART holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

QQPIECHART ships an update every 3 weeks, ApexOS Mobile weekly. The most recent releases landed on October 10, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | QQPIECHART | ApexOS Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/qqpiechart/id6618156890/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/apexos-mobile/id6747596209/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 36 MB | 133 MB |
| Requires iOS | **13.4** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [QQ Pie Inc](https://appshunter.io/developer/1761844154) | [Fireside Interactive, L.L.C.](https://appshunter.io/developer/315755258) |

## What reviewers say

### QQPIECHART

[App page](https://appshunter.io/ios/app/qqpiechart/id6618156890)

This tool converts quantitative probability values from complaints or nonconformities into qualitative probability values for risk analysis. It supports PHA and FMEA risk record assessments.

**Highlights:** Quantitative to qualitative probability conversion, Supports PHA risk analysis, Supports FMEA risk analysis, Converts percentages and decimals, Outputs qualitative values 1 through 5

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $4.99 | per month |
| Premium Plan | $9.99 | per month |
| Premium Annual Plan | $99.99 | per year |


### ApexOS Mobile

[App page](https://appshunter.io/ios/app/apexos-mobile/id6747596209)

This app serves as a mobile extension for a comprehensive roofing business operating system. It allows roofing contractors to manage their operations on the go, streamlining workflows and improving efficiency in the field.

**Highlights:** Mobile companion app, Roofing industry OS, All-in-one operations management, Streamlined workflows, Field efficiency

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QQPIECHART free?

QQPIECHART is free to download, with in-app purchases available.

### Is ApexOS Mobile free?

ApexOS Mobile is free to download, with no in-app purchases.

### Which has better reviews, QQPIECHART or ApexOS Mobile?

QQPIECHART is rated higher. QQPIECHART averages 5.0 out of 5 from 2 ratings, while ApexOS Mobile averages 4.2 from 5 ratings.

### Do QQPIECHART or ApexOS Mobile have ads?

Neither QQPIECHART nor ApexOS Mobile shows ads.

### Which is updated more often, QQPIECHART or ApexOS Mobile?

QQPIECHART ships an update every 3 weeks, and ApexOS Mobile weekly. Most recently, QQPIECHART was updated on October 10, 2026 and ApexOS Mobile on October 28, 2026.

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