# RockSpin — Rock Thin Section Viewer

> Rock Thin Section Viewer (iPhone/iPad app by WOOHYUN JEON.)

- Source: https://appshunter.io/ios/app/rockspin/id6747876962 (this page in markdown: same URL + `.md`)
- Developer: [WOOHYUN JEON](https://appshunter.io/developer/1823158371)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 74 MB
- Languages: American English
- Released: 2026-06-09
- Data updated: 2026-09-03
- User reviews in markdown: https://appshunter.io/ios/app/rockspin/id6747876962/reviews.md

## What is RockSpin?

RockSpin brings the polarizing microscope to your fingertips. Designed for geology students, researchers, and educators, this app lets you explore petrographic thin sections with full 360-degree rotation. Compare PPL and XPL views, inspect mineral markers, explore 3D crystal structures, create geology-focused AI images, and save favorites across your account.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://rockspin.app/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $99.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 1,000 Credits | $14.99 | one-time |



## Version history (last 5 releases)

### 1.0.5 — 2026-09-01

Added Apple Music Live Radio with two-minute visual cycling, refreshed the app icon, improved Pro plan recognition, and strengthened 360° viewing reliability.

### 1.0.3 — 2026-06-11

Added Redeem Code access for Pro subscriptions through Apple's redemption flow.

### 1.0.2 — 2026-06-10

Improved sample update history and refined thin-section viewer marker display.

### 1.0.1 — 2026-06-09

Fixes marker positioning and label spacing in the thin-section viewer.

### 1.0.0 — 2026-05-20

No release notes.

## Apps similar to RockSpin

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [RadTeamSim.Meter](https://appshunter.io/ios/app/radteamsimmeter/id6759922183) | — | Free | Education |
| [Growth Gathering Fellowship](https://appshunter.io/ios/app/growth-gathering-fellowship/id6761892170) | — | Free | Education |
| [StudyAura](https://appshunter.io/ios/app/studyaura/id6760448118) | — | Free | Education |
| [Procrastination Be Gone](https://appshunter.io/ios/app/procrastination-be-gone/id6739904702) | — | Free | Education |
| [StraboTools](https://appshunter.io/ios/app/strabotools/id1496239162) | 5.0 (10) | Free | Education |
| [호야 토야의 옛날이야기](https://appshunter.io/ios/app/id1532338406) | — | Free | Education |

---

*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 2026-09-03.*