# FaultKin Mobile vs Mushroom Identifier

The clearest difference is in-app purchases: FaultKin Mobile at none against Mushroom Identifier's 2. FaultKin Mobile also leads on update cadence (every 2 months vs every 4 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Mushroom Identifier sells 2 in-app purchases, starting at $2.99 per 7 days. FaultKin Mobile asks for nothing beyond the download.

FaultKin Mobile ships an update every 2 months, Mushroom Identifier every 4 months. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | FaultKin Mobile | Mushroom Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/faultkin-mobile/id1234264776/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 28 MB | 3 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Richard Allmendinger](https://appshunter.io/developer/1194772609) | [ProductShake, LLC](https://appshunter.io/developer/1835019546) |

## What reviewers say

### FaultKin Mobile

[App page](https://appshunter.io/ios/app/faultkin-mobile/id1234264776)

This app allows geologists to collect, visualize, and analyze fault slip data directly from their mobile device. It offers both automatic data entry using device orientation and manual input options, with features for grouping data and performing basic calculations.

**Highlights:** Automatic data entry via device orientation, Manual data entry via stereonet or text fields, Group faults with custom tags, Perform basic calculations (rotations, unfolding), Plot P and T axes, moment tensor axes, View plots from any orientation, Stamp entries with time, date, and location

**Features:** macOS Compatibility

**In-app purchases:** none


### Mushroom Identifier

[App page](https://appshunter.io/ios/app/mushroom-identifier-smart-id/id6757123772)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Annual | $29.99 | per year |


## Frequently asked questions

### Is FaultKin Mobile free?

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

### Is Mushroom Identifier free?

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

### Do FaultKin Mobile or Mushroom Identifier have ads?

Neither FaultKin Mobile nor Mushroom Identifier shows ads.

### Which is updated more often, FaultKin Mobile or Mushroom Identifier?

FaultKin Mobile ships an update every 2 months, and Mushroom Identifier every 4 months. Most recently, FaultKin Mobile was updated on September 17, 2026 and Mushroom Identifier on September 13, 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.*