# RAID Calculator vs DiskDeal

The clearest difference is in-app purchases: RAID Calculator at none against DiskDeal's 1. DiskDeal's advantage is update cadence (every 2 months vs every 9 months) and iOS requirement (15.1 vs 26.0). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. DiskDeal sells 1 one-off in-app purchase. RAID Calculator asks for nothing beyond the download.

RAID Calculator ships an update every 9 months, DiskDeal every 2 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RAID Calculator | DiskDeal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diskdeal/id6749479868/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 42.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 10 MB | 25 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Todd Greco](https://appshunter.io/developer/395601656) | [HGSoftware ApS](https://appshunter.io/developer/1779639581) |

## What reviewers say

### RAID Calculator

[App page](https://appshunter.io/ios/app/raid-calculator/id395601653)

This app helps you plan NAS storage configurations and upgrades. It calculates usable space for various RAID levels and NAS systems, even with mixed drive sizes. Visualize drive layouts, compare systems, and learn about RAID configurations.

**Highlights:** Calculate usable space for mixed drive sizes, Supports Synology, Unraid, ZFS, SnapRAID, Btrfs, Visualize drive data, parity, and mirror copies, Compare different NAS systems side-by-side, Plan drive upgrades and see space gains, Learn about RAID levels and NAS system pros/cons

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is RAID Calculator free?

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

### Is DiskDeal free?

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

### Do RAID Calculator or DiskDeal have ads?

Neither RAID Calculator nor DiskDeal shows ads.

### Which is updated more often, RAID Calculator or DiskDeal?

RAID Calculator ships an update every 9 months, and DiskDeal every 2 months. Most recently, RAID Calculator was updated on November 1, 2026 and DiskDeal on October 30, 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.*