# Actioforma KOS vs Little Nature

The clearest difference is in-app purchases: Little Nature at none against Actioforma KOS's 2. Little Nature also leads on update cadence (every 3 weeks vs every 2 months). Actioforma KOS's advantage is iOS requirement (7.0 vs 17.0). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Actioforma KOS sells 2 one-off in-app purchases. Little Nature asks for nothing beyond the download.

Actioforma KOS ships an update every 2 months, Little Nature every 3 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Actioforma KOS | Little Nature |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/little-nature/id6766551832/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 14 MB |
| Requires iOS | **7.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 12+ | 4+ |
| Developer | [META Corporation Japan Ltd.](https://appshunter.io/developer/589751339) | [培克 罗](https://appshunter.io/developer/1516557687) |

## What reviewers say

### Actioforma KOS

[App page](https://appshunter.io/ios/app/actioforma-kos/id589751336)

Explore biology and medical concepts with immersive 3D content, including electron microscopy and CT scans. View on your device or connect to a 3D TV for enhanced learning. Interactive features allow detailed examination of biological structures.

**Highlights:** 3D electron microscopic images, Interactive 3D CT content, Adjustable view angles, size, and transparency, Stereoscopic viewing with/without glasses, External display support for 3D TVs/projectors, Content view history, Display user's 3D content

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SEM Section of the Rat Liver | $0.99 | one-time |
| CT image of Japanese Rat Snake | $0.99 | one-time |


### Little Nature

[App page](https://appshunter.io/ios/app/little-nature/id6766551832)

Explore Asian wildlife and plants in interactive 3D. Study detailed models, place them in your environment with AR, and access information offline. Download content as needed to manage storage.

**Highlights:** Interactive 3D models, Augmented Reality (AR) field guide, Scientific classification details, Category browsing and quick search, On-demand model downloads, Offline viewing of downloaded content

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Actioforma KOS free?

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

### Is Little Nature free?

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

### Do Actioforma KOS or Little Nature have ads?

Neither Actioforma KOS nor Little Nature shows ads.

### Which is updated more often, Actioforma KOS or Little Nature?

Actioforma KOS ships an update every 2 months, and Little Nature every 3 weeks. Most recently, Actioforma KOS was updated on November 1, 2026 and Little Nature on October 31, 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.*