# Reef Guide vs Nudibranch ID West Pacific

The clearest difference is price: Reef Guide at $2.99 against Nudibranch ID West Pacific's $4.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Reef Guide costs $2.99 and Nudibranch ID West Pacific $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Reef Guide ships an update every 6 months, Nudibranch ID West Pacific every 4 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Reef Guide | Nudibranch ID West Pacific |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | — | **[2.5 (2 ratings)](https://appshunter.io/ios/app/nudibranch-id-west-pacific/id1153469021/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | — | Paid |
| Size | 1.8 GB | 49 MB |
| Requires iOS | 27.0 | **26.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Harald Feiste](https://appshunter.io/developer/1021088671) | [Gary Cobb](https://appshunter.io/developer/423276916) |

## What reviewers say

### Reef Guide

[App page](https://appshunter.io/ios/app/reef-guide/id1021088672)

**Features:** macOS Compatibility

**In-app purchases:** none


### Nudibranch ID West Pacific

[App page](https://appshunter.io/ios/app/nudibranch-id-west-pacific/id1153469021)

Identify nudibranch species in Western Pacific waters with this comprehensive field guide. Access detailed information and images offline, and track your finds digitally. Regularly updated with new taxonomic data and species.

**Highlights:** Offline access, 831 species represented, Searchable database, Track found species, Add personal remarks, Regular taxonomic updates

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

**In-app purchases:** none


## Frequently asked questions

### Is Reef Guide free?

Reef Guide costs $2.99, with no in-app purchases.

### Is Nudibranch ID West Pacific free?

Nudibranch ID West Pacific costs $4.99, with no in-app purchases.

### Do Reef Guide or Nudibranch ID West Pacific have ads?

Neither Reef Guide nor Nudibranch ID West Pacific shows ads.

### Which is updated more often, Reef Guide or Nudibranch ID West Pacific?

Reef Guide ships an update every 6 months, and Nudibranch ID West Pacific every 4 months. Most recently, Reef Guide was updated on October 24, 2026 and Nudibranch ID West Pacific on October 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*