# DiskDeal vs Modern RPN

The clearest difference is price: DiskDeal at Free against Modern RPN's $2.99. DiskDeal also leads on iOS requirement (15.1 vs 26.2). Modern RPN's advantage is in-app purchases (none vs 1) and update cadence (every 5 days vs every 2 months). On rating, ratings volume, ads and device support there is nothing between them.

DiskDeal is free to download; Modern RPN costs $2.99 up front. DiskDeal sells 1 one-off in-app purchase. Modern RPN asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for DiskDeal against 5.0 for Modern RPN. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

DiskDeal ships an update every 2 months, Modern RPN every 5 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | DiskDeal | Modern RPN |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/diskdeal/id6749479868/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/modern-rpn/id6760340697/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Paid |
| Size | 25 MB | 2 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HGSoftware ApS](https://appshunter.io/developer/1779639581) | [Kevin Flathers](https://appshunter.io/developer/1883973737) |

## What reviewers say

### DiskDeal

[App page](https://appshunter.io/ios/app/diskdeal/id6749479868)

This app helps you find the best prices on computer storage like hard drives and SSDs across major online marketplaces. Compare prices in your local currency, filter by type, capacity, and form factor, and view detailed product information to make informed purchasing decisions.

**Highlights:** Price comparison across Amazon and eBay, Local currency conversion, Price per TB calculation, Filter by disk type, capacity, and form factor, Detailed product information, Multi-region comparison

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DiskDeal Currency | $1.99 | one-time |


### Modern RPN

[App page](https://appshunter.io/ios/app/modern-rpn/id6760340697)

A minimalist reverse Polish notation calculator for iOS devices. It offers Standard, Binary, and Hex modes for quick calculations and programmer-friendly conversions, featuring a clean interface and a 4-level stack.

**Highlights:** Reverse Polish Notation (RPN) input, Standard, Binary, and Hex modes, 4-level visible stack, Calculation history, Saved session state, Clean dark interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DiskDeal free?

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

### Is Modern RPN free?

Modern RPN costs $2.99, with no in-app purchases.

### Which has better reviews, DiskDeal or Modern RPN?

DiskDeal and Modern RPN are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do DiskDeal or Modern RPN have ads?

Neither DiskDeal nor Modern RPN shows ads.

### Which is updated more often, DiskDeal or Modern RPN?

DiskDeal ships an update every 2 months, and Modern RPN every 5 days. Most recently, DiskDeal was updated on October 28, 2026 and Modern RPN 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.*