# MettleCVE vs bcRPN

The clearest difference is update cadence: MettleCVE at every 2 weeks against bcRPN's every 22 months. MettleCVE also leads on review sentiment (100% vs 80%) and rating (5.0 vs 4.8). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MettleCVE holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 8 respectively. Written reviews point the same way: 100% of MettleCVE's written reviews are positive against 80% of bcRPN's.

MettleCVE ships an update every 2 weeks, bcRPN every 22 months. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | MettleCVE | bcRPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/mettlecve/id1555613958/reviews)** | [4.8 (8 ratings)](https://appshunter.io/ios/app/bcrpn/id1614744829/reviews) |
| Number of ratings | 6 | **8** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 22 months |
| Monetization | Free | Free |
| Size | 1 MB | 0 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Salvatore Saieva](https://appshunter.io/developer/1555613960) | [Paul Wilkins](https://appshunter.io/developer/1614739840) |

## What reviewers say

### MettleCVE

[App page](https://appshunter.io/ios/app/mettlecve/id1555613958)

Quickly search for Common Vulnerabilities and Exposures (CVE) by ID. Access detailed descriptions, severity information, and direct links to patch references and vendor advisories to aid in cybersecurity remediation.

**Highlights:** CVE ID lookup, Automatic CVE prefix and dash entry, Description and severity details, Patch references and vendor advisories, Vulnerability Carousel for past flaws

**In-app purchases:** none


### bcRPN

[App page](https://appshunter.io/ios/app/bcrpn/id1614744829)

This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.

**Highlights:** Reverse Polish Notation (RPN) input, Complex number calculations, Extended precision math, Unlimited stack depth, Undo functionality (up to 10 operations)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MettleCVE free?

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

### Is bcRPN free?

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

### Which has better reviews, MettleCVE or bcRPN?

MettleCVE is rated higher. MettleCVE averages 5.0 out of 5 from 6 ratings, while bcRPN averages 4.8 from 8 ratings.

### Do MettleCVE or bcRPN have ads?

Neither MettleCVE nor bcRPN shows ads.

### Which is updated more often, MettleCVE or bcRPN?

MettleCVE ships an update every 2 weeks, and bcRPN every 22 months. Most recently, MettleCVE was updated on October 17, 2026 and bcRPN on October 24, 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.*