# Perceptium vs Specimen Log

The clearest difference is in-app purchases: Perceptium at none against Specimen Log's 1. Specimen Log's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Specimen Log sells 1 one-off in-app purchase. Perceptium asks for nothing beyond the download.

Perceptium ships an update every 5 days, Specimen Log weekly. The most recent releases landed on September 30, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Perceptium | Specimen Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/specimen-log/id6763961463/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | — | Freemium |
| Size | 33 MB | 54 MB |
| Requires iOS | **14.0.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ASH SERVICOS LTDA](https://appshunter.io/developer/1654793255) | [kazuki korenori](https://appshunter.io/developer/1884835388) |

## What reviewers say

### Perceptium

[App page](https://appshunter.io/ios/app/perceptium/id6733241661)

**Features:** macOS Compatibility

**In-app purchases:** none


### Specimen Log

[App page](https://appshunter.io/ios/app/specimen-log/id6763961463)

Organize your mineral collection with detailed records, photos, and custom tags. Track purchase history, storage locations, and analyze your collection's growth. Ideal for collectors who need a dedicated tool to manage their specimens.

**Highlights:** Record specimen details (name, locality, price, etc.), Attach multiple photos per specimen, Organize with custom tags, Switch between list and gallery views, Track specimen storage locations (Pro), Analyze collection spending and growth (Pro), Create and manage wishlists, Share specimen details

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Specimen Log Pro | $5.99 | one-time |


## Frequently asked questions

### Is Perceptium free?

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

### Is Specimen Log free?

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

### Do Perceptium or Specimen Log have ads?

Perceptium shows ads; Specimen Log does not.

### Which is updated more often, Perceptium or Specimen Log?

Perceptium ships an update every 5 days, and Specimen Log weekly. Most recently, Perceptium was updated on September 30, 2026 and Specimen Log on October 7, 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.*