# SmartBox Reference Guide vs X2Power Marine

SmartBox Reference Guide and X2Power Marine both sit at 3.1 stars, but that hides the real split: 63% of SmartBox Reference Guide's written reviews are positive against 44% of X2Power Marine's. SmartBox Reference Guide also leads on update cadence (fortnightly vs every 2 months). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.1 for SmartBox Reference Guide against 3.1 for X2Power Marine. Both are backed by a comparable volume of ratings — 34 and 14 respectively. Written reviews are what separate them: 63% of SmartBox Reference Guide's written reviews are positive against 44% of X2Power Marine's.

SmartBox Reference Guide ships an update fortnightly, X2Power Marine every 2 months. The most recent releases landed on September 17, 2026 and June 9, 2026 respectively.

## The numbers

| Metric | SmartBox Reference Guide | X2Power Marine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (34 ratings)](https://appshunter.io/ios/app/smartbox-reference-guide/id1172947942/reviews)** | [3.1 (14 ratings)](https://appshunter.io/ios/app/x2power-marine/id6446151584/reviews) |
| Number of ratings | **34** | 14 |
| Positive reviews | **62.5% of reviews** | 44.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | Free |
| Size | 65 MB | 38 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Smart Box Technology, LLC](https://appshunter.io/developer/1172947941) | [Batteries Plus LLC](https://appshunter.io/developer/1181988229) |

## What reviewers say

### SmartBox Reference Guide

[App page](https://appshunter.io/ios/app/smartbox-reference-guide/id1172947942)

Learn programming concepts through guided lessons. This educational tool breaks down key programming ideas for understanding, not for live coding. Ideal for beginners wanting to grasp fundamental principles.

**Highlights:** Step-by-step programming guidance, Clear explanations of key concepts, Educational training tool, Focus on understanding principles, Suitable for beginners

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

**In-app purchases:** none


### X2Power Marine

[App page](https://appshunter.io/ios/app/x2power-marine/id6446151584)

Monitor your X2Power Lithium Marine battery's status in real-time. This app provides vital information like voltage, current, capacity, and charge status via Bluetooth, enhancing battery safety and usability.

**Highlights:** Real-time voltage monitoring, Operating current and power display, Remaining battery capacity, Charging time estimation, Battery cycle count, Full Charge Capacity (FCC) data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmartBox Reference Guide free?

SmartBox Reference Guide is free to download, with no in-app purchases.

### Is X2Power Marine free?

X2Power Marine is free to download, with no in-app purchases.

### Which has better reviews, SmartBox Reference Guide or X2Power Marine?

SmartBox Reference Guide is rated higher. SmartBox Reference Guide averages 3.1 out of 5 from 34 ratings, while X2Power Marine averages 3.1 from 14 ratings.

### Do SmartBox Reference Guide or X2Power Marine have ads?

Neither SmartBox Reference Guide nor X2Power Marine shows ads.

### Which is updated more often, SmartBox Reference Guide or X2Power Marine?

SmartBox Reference Guide ships an update fortnightly, and X2Power Marine every 2 months. Most recently, SmartBox Reference Guide was updated on September 17, 2026 and X2Power Marine on June 9, 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.*