# StraboTools vs RockSpin

The clearest difference is in-app purchases: StraboTools at none against RockSpin's 3. StraboTools also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). RockSpin's advantage is update cadence (fortnightly vs every 2 months). On price and ads there is nothing between them.

Both are free to download. RockSpin sells 3 in-app purchases, starting at $9.99 per month. StraboTools asks for nothing beyond the download.

StraboTools ships an update every 2 months, RockSpin fortnightly. The most recent releases landed on June 4, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | StraboTools | RockSpin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/strabotools/id1496239162/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 14 MB | 80 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [The University of Kansas](https://appshunter.io/developer/726307325) | [WOOHYUN JEON](https://appshunter.io/developer/1823158371) |

## What reviewers say

### StraboTools

[App page](https://appshunter.io/ios/app/strabotools/id1496239162)

This app assists geologists in the field by analyzing photographs to provide quantitative data on rock fabric and mineral composition. It offers tools for measuring fabric orientation, determining color index, and detecting edges in rock images.

**Highlights:** Edge Fabric tool for orientation analysis, Color Index tool for mineral composition, Edge detection filter, Analyzes photos in-app or imported, Useful for plutonic and other rock types, Supports thin section study

**Features:** macOS Compatibility

**In-app purchases:** none


### RockSpin

[App page](https://appshunter.io/ios/app/rockspin/id6747876962)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $99.99 | per year |
| 1,000 Credits | $14.99 | one-time |


## Frequently asked questions

### Is StraboTools free?

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

### Is RockSpin free?

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

### Do StraboTools or RockSpin have ads?

Neither StraboTools nor RockSpin shows ads.

### Which is updated more often, StraboTools or RockSpin?

StraboTools ships an update every 2 months, and RockSpin fortnightly. Most recently, StraboTools was updated on June 4, 2026 and RockSpin on September 17, 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.*