# ICNS vs NbN3

The clearest difference is update cadence: NbN3 at every 2 months against ICNS's every 9 months. ICNS's advantage is iOS requirement (11.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ICNS ships an update every 9 months, NbN3 every 2 months. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ICNS | NbN3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (7 ratings)](https://appshunter.io/ios/app/nbn3/id927272449/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 42.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 84 MB | 24 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Matrix Medical Communications](https://appshunter.io/developer/991783027) | [European College of Neuropsychopharmacology (ECNP)](https://appshunter.io/developer/687721422) |

## What reviewers say

### ICNS

[App page](https://appshunter.io/ios/app/icns/id850566372)

**Features:** macOS Compatibility

**In-app purchases:** none


### NbN3

[App page](https://appshunter.io/ios/app/nbn3/id927272449)

This app provides a neuroscience-based nomenclature for psychotropic medications, reflecting current knowledge and aiding clinicians in making informed prescription decisions. It includes detailed information on pharmacology, mode of action, indications, efficacy, side effects, practical notes, and neurobiology.

**Highlights:** Neuroscience-based nomenclature, Pharmacology and mode of action, Approved indications, Efficacy and side effects, Practical clinical notes, Neurobiology details, Links to IUPHAR

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

**In-app purchases:** none


## Frequently asked questions

### Is ICNS free?

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

### Is NbN3 free?

NbN3 is free to download, with no in-app purchases.

### Do ICNS or NbN3 have ads?

Neither ICNS nor NbN3 shows ads.

### Which is updated more often, ICNS or NbN3?

ICNS ships an update every 9 months, and NbN3 every 2 months. Most recently, ICNS was updated on October 2, 2026 and NbN3 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.*