# SharkToothID vs PLC Visual Learning Studio

The clearest difference is review sentiment: SharkToothID at 100% against PLC Visual Learning Studio's 0%. SharkToothID also leads on price (Free vs $9.99) and rating (4.3 vs 2.0). PLC Visual Learning Studio's advantage is update cadence (every 2 weeks vs every 7 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

SharkToothID is free to download; PLC Visual Learning Studio costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SharkToothID holds the better App Store score, 4.3 against 2.0. That said, the two scores are not equally well evidenced: SharkToothID has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of SharkToothID's written reviews are positive against 0% of PLC Visual Learning Studio's.

SharkToothID ships an update every 7 months, PLC Visual Learning Studio every 2 weeks. The most recent releases landed on September 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | SharkToothID | PLC Visual Learning Studio |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.3 (19 ratings)](https://appshunter.io/ios/app/sharktoothid/id1659293323/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/plc-visual-learning-studio/id6765722192/reviews) |
| Number of ratings | **19** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Size | 164 MB | 23 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Steven Sharpe](https://appshunter.io/developer/1547019547) | [Yuhsiu Lai](https://appshunter.io/developer/433114647) |

## What reviewers say

### SharkToothID

[App page](https://appshunter.io/ios/app/sharktoothid/id1659293323)

Easily identify shark teeth, scallops, and other fossils found along the Carolinas and Florida coasts. This app covers the most common specimens you're likely to discover.

**Highlights:** Identify shark teeth, Identify Pecten and other fossils, Covers Carolinas and Florida coasts, Focuses on common fossils, Easy to use interface

**In-app purchases:** none


### PLC Visual Learning Studio

[App page](https://appshunter.io/ios/app/plc-visual-learning-studio/id6765722192)

This comprehensive learning environment provides hands-on experience with programmable logic controllers. It offers structured courses, a live code editor with simulation, interactive project diagrams, and a searchable reference library for engineers, technicians, and students.

**Highlights:** Structured curriculum with progress tracking, Live PLC code editor and simulator, Interactive real-world engineering projects, Visual reference gallery with diagrams, Searchable quick-look reference library, Language and vendor cheat sheets

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

**In-app purchases:** none


## Frequently asked questions

### Is SharkToothID free?

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

### Is PLC Visual Learning Studio free?

PLC Visual Learning Studio costs $9.99, with no in-app purchases.

### Which has better reviews, SharkToothID or PLC Visual Learning Studio?

SharkToothID is rated higher. SharkToothID averages 4.3 out of 5 from 19 ratings, while PLC Visual Learning Studio averages 2.0 from 1 ratings.

### Do SharkToothID or PLC Visual Learning Studio have ads?

Neither SharkToothID nor PLC Visual Learning Studio shows ads.

### Which is updated more often, SharkToothID or PLC Visual Learning Studio?

SharkToothID ships an update every 7 months, and PLC Visual Learning Studio every 2 weeks. Most recently, SharkToothID was updated on September 24, 2026 and PLC Visual Learning Studio on October 11, 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.*