Comparison

Projecta BM500 vs KA CHARGE

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Projecta BM500

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
Read full description

TBB'battery monitor kit is composed by a battery shunt and a monitor which allow the user to fully understand his/her battery. Here is some quick facts of this kit: 1) Measurement current is up to 500A 2) Is able to work with battery (or battery bank) 12Vdc, 24Vdc or 48Vdc 3) Compatible with AGM, GEL or LFP battery 4) An elegant design monitor to display battery information such as current, voltage, SOC, time remaining etc. 5) The monitor could be installed at any location where with easy access to users 6) Measurement accuracy: Current: +/- 0.4% Voltage: +/- 0.3%

About

KA CHARGE

This app provides full control and visibility over your dual battery system. Connect via Bluetooth to configure charging profiles, monitor power input, and view live charge status. Receive real-time alerts for seamless power management on the go.

Highlights
  • Configure charging profiles
  • Monitor input power
  • View live charge current
  • Receive system alerts
  • Bluetooth connectivity
  • Real-time data display
Features
Read full description

KA CHARGE brings configuration, monitoring and control of your compatible KickAss power devices into one easy-to-use app. Connect via Bluetooth to set up your devices, adjust settings and view live operating dataβ€”whether you’re off-grid, at camp or on the road. Compatible KickAss products: 50A AC-DC Battery Charger 25A DC-DC MPPT Charger 40A DC-DC MPPT Charger 60A Dual Channel DC-DC MPPT Charger 2200W Bi-Directional Inverter Charger 3200W Bi-Directional Inverter Charger Key Features: Configure charging profiles to suit your battery and setup Monitor live power, charging current and charging stage Control supported device functions from your phone Receive real-time warnings and system alerts Available settings, controls and monitoring data vary by device. KA CHARGE. Full control from one app.

Screenshots

Projecta BM5004 screens
KA CHARGE3 screens

Verdict

The call

The clearest difference is update cadence: KA CHARGE at every 5 weeks against Projecta BM500's every 7 months. KA CHARGE also leads on review sentiment (17% vs 0%). Projecta BM500's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Projecta BM500 ships an update every 7 months, KA CHARGE every 5 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard3 real differences Β· 5 level
Projecta BM500 versus KA CHARGE: the parameters behind the verdict, then further details
ParameterProjecta BM500KA CHARGE
PriceFreeFree
Positive reviews0.0% of reviews16.7% of reviews β€” better
Update frequencyEvery 7 monthsEvery 5 weeks β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 β€” better15.0
Further details β€” not scored
Size24 MB23 MB
Age rating4+4+
DeveloperTBB Power Co., LtdKickass Products Pvt Ltd

Customer experience

Projecta BM500

Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

KA CHARGE

Written reviews6 reviews
Positive16.7%
Neutral0.0%
Negative83.3%

In-app purchases

None

Projecta BM500

No in-app purchases

None

KA CHARGE

No in-app purchases

Questions

Is Projecta BM500 free?
Projecta BM500 is free to download, with no in-app purchases.
Is KA CHARGE free?
KA CHARGE is free to download, with no in-app purchases.
Do Projecta BM500 or KA CHARGE have ads?
Neither Projecta BM500 nor KA CHARGE shows ads.
Which is updated more often, Projecta BM500 or KA CHARGE?
Projecta BM500 ships an update every 7 months, and KA CHARGE every 5 weeks. Most recently, Projecta BM500 was updated on November 4, 2026 and KA CHARGE on October 30, 2026.

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