# Marlin Keypad vs HawkEye DepthTrax PLUS

The clearest difference is in-app purchases: Marlin Keypad at none against HawkEye DepthTrax PLUS's 3. HawkEye DepthTrax PLUS's advantage is update cadence (every 10 days vs every 10 months) and ratings volume (5 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. HawkEye DepthTrax PLUS sells 3 in-app purchases, starting at $5.99 per month. Marlin Keypad asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Marlin Keypad against 5.0 for HawkEye DepthTrax PLUS. That said, the two scores are not equally well evidenced: HawkEye DepthTrax PLUS has 5 ratings behind it against 1, so its average is the more settled of the two.

Marlin Keypad ships an update every 10 months, HawkEye DepthTrax PLUS every 10 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Marlin Keypad | HawkEye DepthTrax PLUS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/marlin-keypad/id6479428020/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/hawkeye-depthtrax-plus/id6752595609/reviews) |
| Number of ratings | 1 | **5** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 10 days** |
| Monetization | **Free** | Freemium |
| Size | 33 MB | 7 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marlin Technologies, Inc.](https://appshunter.io/developer/1735942032) | [NorCross Marine Products, Inc](https://appshunter.io/developer/1630111722) |

## What reviewers say

### Marlin Keypad

[App page](https://appshunter.io/ios/app/marlin-keypad/id6479428020)

This utility app allows users to connect with and control Marlin MFlex Legend Keypads. It provides essential functionality for managing these specialized devices.

**Highlights:** Connect to Marlin MFlex Legend Keypads, Control Marlin MFlex Legend Keypads, Utility functions, Device management

**Features:** macOS Compatibility

**In-app purchases:** none


### HawkEye DepthTrax PLUS

[App page](https://appshunter.io/ios/app/hawkeye-depthtrax-plus/id6752595609)

This app turns your mobile device into a fish finder display for compatible HawkEye sonar products. It shows real-time sonar views, fish targets, bottom structure, depth, and water temperature, along with speed and heading data.

**Highlights:** Live fish finder sonar view, Identify fish targets and structure, Monitor depth and water temperature, Track speed and heading, Use phone/tablet as fish finder display

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Subscription | $5.99 | per month |
| Pro Annual Subscription | $39.99 | per year |
| Pro Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Marlin Keypad free?

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

### Is HawkEye DepthTrax PLUS free?

HawkEye DepthTrax PLUS is free to download, with in-app purchases available.

### Which has better reviews, Marlin Keypad or HawkEye DepthTrax PLUS?

Marlin Keypad and HawkEye DepthTrax PLUS are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do Marlin Keypad or HawkEye DepthTrax PLUS have ads?

Neither Marlin Keypad nor HawkEye DepthTrax PLUS shows ads.

### Which is updated more often, Marlin Keypad or HawkEye DepthTrax PLUS?

Marlin Keypad ships an update every 10 months, and HawkEye DepthTrax PLUS every 10 days. Most recently, Marlin Keypad was updated on November 4, 2026 and HawkEye DepthTrax PLUS on October 30, 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.*