# Projecta BM500 vs KA Lithium

Projecta BM500 and KA Lithium are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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, KA Lithium every 4 months. The most recent releases landed on October 11, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Projecta BM500 | KA Lithium |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 24 MB | 60 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TBB Power Co., Ltd](https://appshunter.io/developer/1089239531) | [Kickass Products Pvt Ltd](https://appshunter.io/developer/1387751158) |

## 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


### KA Lithium

[App page](https://appshunter.io/ios/app/ka-lithium/id6480479006)

**In-app purchases:** none


## Frequently asked questions

### Is Projecta BM500 free?

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

### Is KA Lithium free?

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

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

Neither Projecta BM500 nor KA Lithium shows ads.

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

Projecta BM500 ships an update every 7 months, and KA Lithium every 4 months. Most recently, Projecta BM500 was updated on October 11, 2026 and KA Lithium 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.*