# nDeco vs Mounted Shooters Guidebook

The clearest difference is price: nDeco at Free against Mounted Shooters Guidebook's $14.99. Mounted Shooters Guidebook's advantage is rating (5.0 vs 2.0) and update cadence (every 4 days vs every 7 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

nDeco is free to download; Mounted Shooters Guidebook costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mounted Shooters Guidebook holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

nDeco ships an update every 7 months, Mounted Shooters Guidebook every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | nDeco | Mounted Shooters Guidebook |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/ndeco/id6741527911/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mounted-shooters-guidebook/id6758263266/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 days** |
| Monetization | **Free** | Paid |
| Size | 73 MB | 50 MB |
| Requires iOS | 17.2 | **14.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eyal Vardi](https://appshunter.io/developer/988684101) | [Matthew Nielson](https://appshunter.io/developer/1871841539) |

## What reviewers say

### nDeco

[App page](https://appshunter.io/ios/app/ndeco/id6741527911)

Plan multi-segment dives with ease using U.S. Navy and Bühlmann decompression models. Get instant dive information, depth limit guidance, and surface interval recommendations for safe underwater adventures.

**Highlights:** Multi-segment dive planning, U.S. Navy & Bühlmann decompression models, Depth limit guidance, Instant dive information, Surface interval recommendations, Metric/imperial unit flexibility

**Features:** macOS Compatibility

**In-app purchases:** none


### Mounted Shooters Guidebook

[App page](https://appshunter.io/ios/app/mounted-shooters-guidebook/id6758263266)

Access official mounted shooting patterns instantly on your phone. View patterns at true scale with or without guidelines, and get setup measurements and bonus tips. Includes a quick reference penalty list and a random pattern picker.

**Highlights:** Official mounted shooting patterns, True scale pattern redraws, View patterns with/without guidelines, Setup measurements, Bonus tips for all skill levels, Quick reference penalty list, Random pattern picker

**In-app purchases:** none


## Frequently asked questions

### Is nDeco free?

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

### Is Mounted Shooters Guidebook free?

Mounted Shooters Guidebook costs $14.99, with no in-app purchases.

### Which has better reviews, nDeco or Mounted Shooters Guidebook?

Mounted Shooters Guidebook is rated higher. nDeco averages 2.0 out of 5 from 1 ratings, while Mounted Shooters Guidebook averages 5.0 from 1 ratings.

### Do nDeco or Mounted Shooters Guidebook have ads?

Neither nDeco nor Mounted Shooters Guidebook shows ads.

### Which is updated more often, nDeco or Mounted Shooters Guidebook?

nDeco ships an update every 7 months, and Mounted Shooters Guidebook every 4 days. Most recently, nDeco was updated on October 30, 2026 and Mounted Shooters Guidebook 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.*