# RAID Calc2 — Instant RAID size & redundancy

> Instant RAID size & redundancy (iPhone/iPad app by Todd Greco.)

- Source: https://appshunter.io/ios/app/raid-calc2/id6755641457 (this page in markdown: same URL + `.md`)
- Developer: [Todd Greco](https://appshunter.io/developer/395601656)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 18.6 · 13 MB
- Languages: French (France), Italian, Japanese, European Spanish
- Released: 2025-11-24
- Data updated: 2025-12-07
- User reviews in markdown: https://appshunter.io/ios/app/raid-calc2/id6755641457/reviews.md

## What is RAID Calc2?

Understand your RAID before you build it.
RAID Calculator gives you quick, accurate estimates of usable capacity and redundancy for common RAID levels. Whether you’re planning a homelab, sizing storage for a small office, or just learning how RAID works, this simple calculator helps you reason about your arrays in seconds.
Features
• Supports common RAID levels (e.g., RAID 0, 1, 5, 6, 10)*
• Enter disk size and disk count to see usable capacity
• See how many drive failures your configuration can tolerate
• Works completely offline – no accounts, no analytics, no ads
• Clean, focused UI with instant results
Privacy-friendly by design
All calculations run locally on your device. RAID Calculator doesn’t collect personal data, use trackers, or send your RAID configurations anywhere.
Who is it for?
• Homelab and NAS enthusiasts
• IT admins and sysadmins
• Students learning about storage and redundancy
• Anyone who wants a quick RAID sanity check
Plan your arrays with more confidence and less guesswork.


## Version history (last 2 releases)

### 1.3.2 — 2025-12-06

iOS 26 update

### 1.3 — 2025-11-24

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2025-12-07.*