# Projecta BM500 vs DCS Lithium

The clearest difference is update cadence: DCS Lithium at every 2 weeks against Projecta BM500's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Projecta BM500 ships an update every 7 months, DCS Lithium every 2 weeks. The most recent releases landed on July 5, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Projecta BM500 | DCS Lithium |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 24 MB | 27 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TBB Power Co., Ltd](https://appshunter.io/developer/1089239531) | [Marek Tomolowicz](https://appshunter.io/developer/1535362874) |

## What reviewers say

### 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


### DCS Lithium

[App page](https://appshunter.io/ios/app/dcs-lithium/id6742028751)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Projecta BM500 free?

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

### Is DCS Lithium free?

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

### Do Projecta BM500 or DCS Lithium have ads?

Neither Projecta BM500 nor DCS Lithium shows ads.

### Which is updated more often, Projecta BM500 or DCS Lithium?

Projecta BM500 ships an update every 7 months, and DCS Lithium every 2 weeks. Most recently, Projecta BM500 was updated on July 5, 2026 and DCS Lithium on May 17, 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.*