Comparison

BlueBattery vs WFS400

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

Head to head
About

BlueBattery

Monitor and record vital electrical parameters of your RV battery system in real-time. View live data, energy mix, and historical records for diagnostics. Configure settings and update device firmware.

Highlights
  • Real-time electrical parameter display
  • Simultaneous connection for energy overview
  • Historical data for diagnostics
  • Export data to CSV
  • Device configuration and settings
  • Firmware updates
Features
Read full description

BlueBattery is a Bluetooth Smart (BLE) based system to display and record vital electrical parameters of a RV battery system. The small outline device connects directly in line of the battery. An additional connection to the solar charger or booster completes the installation. This App displays all recorded data as well as live measurements. Live Data Shows all important measurements from battery, solar, booster in real time. Energiemix The simultaneous connection to all devices allows for a complete energy overview with day-to-day readings. Historic Records best for diagnosing and troubleshooting of your battery system graphical overview of important measurements for the last 24 hours daily min/max data consumption, charging, solar summery export to CSV file Configure Settings make all adjustments via touch interface and save it to the device get an overview of all configuration settings Firmware Updates maintain your devices with included firmware outdated versions will be prompted to update manual firmware update BlueBattery includes a complete battery computer and displays - battery voltage (V) - battery current (A) - battery capacity (Ah) - state of charge SOC (%) - temperature (°C) compatible to solar charge controllers from Alden, Büttner, Votronic (since 2013) and Victron MPPT - solar power (W) - solar charge current (A) - solar panel voltage (V) - battery voltage (V) - status compatible to boost chargers from Votronic VCC1212-20/-30/-50/-70/-90 - input voltage (V) - output voltage (V) - output current (A) supported BlueBattery devices - BBX200 Pro - BBX400 Pro - BlueBattery Black Edition - BlueBattery-Basic - BlueBattery D1 - BlueBattery D1 / D2 Black Edition - BlueBattery X200 / X300 - BBX400 - Adapter D1

About

WFS400

This application allows you to disarm your vehicle's anti-theft immobilizer using your smartphone. It offers automatic unlocking when you approach your car and supports pairing multiple phones or wireless transmitters.

Highlights
  • Smartphone-based immobilizer disarming
  • Automatic car unlocking via proximity
  • Pair up to 8 phones or transmitters
  • Background operation
  • PIN code backup
Features
Read full description

WFS400-SMART immobilizer is a modern anti-theft device for your vehicle. From now you can also disarm it using the app. You can still use a maintenance-free wireless transmitter or PIN code in parallel. You can pair up to 8 phones or wireless transmitters with the immobilizer. The WFS400-SMART app runs in the background until you close it or turn off the app's functionality. You don't even have to take your phone out of your pocket, all you need to do is get close to your vehicle and the immobilizer will automatically connect to your phone and unlock the car. The list of supported vehicles is available at www.ampire.de. Do you want to have a car secured with WFS400-SMART immobilizer? Contact a car installer in your area. The application is intended for use with a WFS400-SMART immobilizer.

Screenshots

BlueBattery4 screens
WFS4003 screens

Verdict

The call

The clearest difference is review sentiment: BlueBattery at 82% against WFS400's 0%. WFS400's advantage is update cadence (fortnightly vs every 5 weeks) and iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

BlueBattery ships an update every 5 weeks, WFS400 fortnightly. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
BlueBattery versus WFS400: the parameters behind the verdict, then further details
ParameterBlueBatteryWFS400
PriceFreeFree
Rating—1.0 (1 ratings) — better
Positive reviews81.8% of reviews — better0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 5 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.010.0 — better
Further details — not scored
Size22 MB27 MB
Age rating4+4+
DeveloperKai SchefferSEO Electronics s.c.

Customer experience

BlueBattery

Written reviews11 reviews
Positive81.8%
Neutral9.1%
Negative9.1%

WFS400

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

BlueBattery

No in-app purchases

None

WFS400

No in-app purchases

Questions

Is BlueBattery free?
BlueBattery is free to download, with no in-app purchases.
Is WFS400 free?
WFS400 is free to download, with no in-app purchases.
Do BlueBattery or WFS400 have ads?
Neither BlueBattery nor WFS400 shows ads.
Which is updated more often, BlueBattery or WFS400?
BlueBattery ships an update every 5 weeks, and WFS400 fortnightly. Most recently, BlueBattery was updated on October 11, 2026 and WFS400 on October 24, 2026.

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