# SIMARINE vs Projecta BM500

The clearest difference is update cadence: SIMARINE at every 3 weeks against Projecta BM500's every 7 months. SIMARINE also leads on review sentiment (8% vs 0%). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SIMARINE ships an update every 3 weeks, Projecta BM500 every 7 months. The most recent releases landed on September 10, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | SIMARINE | Projecta BM500 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **8.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Monetization | Free | Free |
| Size | 120 MB | 24 MB |
| Requires iOS | **12.2** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SIMARINE](https://appshunter.io/developer/1217159038) | [TBB Power Co., Ltd](https://appshunter.io/developer/1089239531) |

## What reviewers say

### SIMARINE

[App page](https://appshunter.io/ios/app/simarine/id1587666762)

Monitor your boat's power consumption and tank levels with this application. Adjust settings and update your hardware remotely for seamless vessel management.

**Highlights:** Monitor power usage, Monitor tank levels, Adjust settings, Update hardware

**In-app purchases:** none


### Projecta BM500

[App page](https://appshunter.io/ios/app/projecta-bm500-bt/id1619339633)

This kit allows users to monitor their battery systems, displaying key information like current, voltage, state of charge, and remaining time. It is compatible with various battery types and voltages, offering accurate measurements for a comprehensive understanding of battery health.

**Highlights:** Real-time current monitoring up to 500A, Supports 12V, 24V, or 48V DC battery systems, Compatible with AGM, GEL, and LFP batteries, Displays voltage, SOC, and time remaining, Accurate current (+/- 0.4%) and voltage (+/- 0.3%) measurements

**In-app purchases:** none


## Frequently asked questions

### Is SIMARINE free?

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

### Is Projecta BM500 free?

Projecta BM500 is free to download, with no in-app purchases.

### Do SIMARINE or Projecta BM500 have ads?

Neither SIMARINE nor Projecta BM500 shows ads.

### Which is updated more often, SIMARINE or Projecta BM500?

SIMARINE ships an update every 3 weeks, and Projecta BM500 every 7 months. Most recently, SIMARINE was updated on September 10, 2026 and Projecta BM500 on July 5, 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.*