EV Master vs OCPP Tool
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
EV Master
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EV Master focuses on the diagnosis and health status detection of new energy vehicle battery packs, integrating fault diagnosis, data stream reading, temperature and voltage monitoring of battery packs, and supporting one click generation of health reports. β Fault diagnosis: We automatically scan the entire vehicle system of new energy vehicles and support one click clearing of fault codes. β Read data stream: Supports reading battery pack related data streams for users to view battery related information in real time β Battery pack inspection: Read the voltage and temperature of each battery in the new energy vehicle, and grasp the health status of each battery. Battery Health Report: It covers basic information about the battery (remaining charge, health status) and inspection details (fault conditions, battery voltage and temperature, data flow information), assisting users in understanding the battery condition of their car.
OCPP Tool
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OCPP Tool is a lightweight, fully local utility for commissioning EV chargers over Bluetooth using the BluFi protocol β no account, no cloud, and no data collection. Connect to a charger over Bluetooth and configure everything on-site: β’ Scan & connect β discover nearby BluFi-enabled chargers and connect in seconds, with live signal strength. β’ Secure channel β an encrypted handshake (DiffieβHellman key exchange + AES) protects every command sent to the charger. β’ WiFi provisioning β configure Station mode (SSID, password, BSSID) or SoftAP mode, or scan the charger's nearby WiFi list and pick a network. β’ OCPP setup β write the OCPP WebSocket URL and ChargePoint Identity straight to the charger. β’ Cellular & network β set the LTE APN and choose the network preference (Auto / Ethernet / WiFi / 4G). β’ Status at a glance β read the device firmware version, WiFi connection status and live network state. β’ Custom data β send and receive raw payloads for advanced diagnostics. Built for installers, field technicians and developers who need a fast, reliable, offline way to bring chargers online. Privacy first: OCPP Tool has no backend and makes no network requests. Everything you enter is sent only to the charger over Bluetooth. Nothing is collected, stored or uploaded.
Screenshots
Verdict
EV Master and OCPP Tool are too close to call on the numbers: across 5 compared parameters β price, ads, in-app purchases and device support among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | EV Master | OCPP Tool |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | β |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 β better |
| Further details β not scored | ||
| Size | 65 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | TopTekk Technology Co.,Ltd. | BESEN GROUP |
In-app purchases
EV Master
No in-app purchases
OCPP Tool
No in-app purchases
Questions
Is EV Master free?
Is OCPP Tool free?
Do EV Master or OCPP Tool have ads?
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