Comparison

DiskDeal vs Modern RPN

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DiskDeal

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
Read full description

DiskDeal: The Storage Price Comparison App Looking for the best deals on computer storage? DiskDeal helps you find the lowest prices on hard drives, SSDs, and NVMe drives across Amazon and eBay marketplaces worldwide. Find the Most Affordable Storage: • Compare prices from Amazon and eBay in multiple regions • View prices in your local currency with our currency converter • See price per TB to identify the most cost-effective options • Get comprehensive pricing from US, UK, Germany, France, Spain, Italy, Canada and more Powerful Filtering Options: • Filter by disk type: HDD, SSD, or NVMe • Filter by capacity: from 250GB to 30TB+ • Filter by form factor: 3.5", 2.5", M.2, PCIe • Filter by price range, interface, and condition Detailed Product Information: • Product images • technical specifications • Current availability status • Seller information and ratings • One-tap access to product pages Smart Features: • Real-time price conversion between currencies • Multi-region comparison in a single view • Fast, responsive interface with minimal loading times DiskDeal is the perfect companion for: • PC builders looking for the best storage deals • IT professionals managing storage budgets • Data hoarders seeking maximum capacity at minimum cost • Gamers needing fast, affordable SSDs • Anyone upgrading their storage Find the perfect balance of price, capacity, and performance with DiskDeal - your personal storage price finder!

About

Modern RPN

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
Read full description

Modern RPN is a minimalist reverse polish notation calculator for iPhone and iPad, with Standard, Binary, and Hex modes for fast everyday math and programmer-friendly conversions. Use a clean 4-level stack, instant mode switching, calculation history, and saved session state to move quickly without clutter. Features: • True RPN input with ENTER to push or duplicate values • Standard, Binary, Financial, and Hex calculator modes • Mode-aware entry and display formatting • 4-level visible stack: T, Z, Y, X • Core operations: add, subtract, multiply, divide • Stack tools: POP, X/Y swap, sign toggle, backspace, and all clear • Calculation history with timestamps • History filtering by All, Standard, Binary, Financial, or Hex • Saved session state for your current mode, stack, and in-progress input • Clean dark interface designed for focus and readability • No accounts, no ads, no data collection Modern RPN is designed for people who want the speed of a classic RPN calculator with a modern iOS interface.

Screenshots

DiskDeal4 screens
Modern RPN4 screens

Verdict

The call

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.

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

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard5 real differences · 5 level
DiskDeal versus Modern RPN: the parameters behind the verdict, then further details
ParameterDiskDealModern RPN
PriceFree — better$2.99
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 2 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better26.2
Further details — not scored
Size25 MB2 MB
Age rating4+4+
DeveloperHGSoftware ApSKevin Flathers

In-app purchases

1 purchases

DiskDeal

One-time1
  • DiskDeal Currency$1.99
None

Modern RPN

No in-app purchases

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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