BLE Term vs Kelvarune
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BLE Term
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BLE Term is a general-purpose Bluetooth Low Energy (BLE) terminal emulator designed for anyone who needs simple, text-based communication with BLE devices. The app allows users to scan, connect, and communicate with any BLE device that provides UART-style characteristics, making it suitable for a wide range of use cases including prototyping, IoT development, hardware debugging, and education. BLE Term is not limited to any specific organization or product. It can be used by developers, students, hobbyists, and engineers with their own BLE-enabled devices. Key features: • Scan and connect to standard BLE devices • Send and receive text-based data • UART-style BLE communication • Real-time log display • No registration or account required BLE Term is a simple, lightweight, and universal tool for everyday BLE communication.
Kelvarune
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Kelvarune is a developer tool that lets you monitor, debug, and control ESP32 / Arduino and other embedded devices from your smartphone in real time. Add just a few lines of the Kelvarune SDK to your sketch, and your Dashboard builds itself automatically. No complex setup - connect over BLE or Wi-Fi/WebSocket and you're ready to go. ■ Monitor - System Metrics such as CPU, free heap, and connection status, shown automatically - Add User Metrics like temperature, humidity, RPM, or voltage with a few lines of code - Clear display styles: Number, Gauge, Bar, LED, and line graphs ■ Debug - Filter, search, and copy DEBUG / INFO / WARN / ERROR logs in Console - Track connection changes, reboots, and other key state changes in a timeline with Events - View current value, min, max, average, and a history graph in Metric detail ■ Control - Command UI is generated automatically from your SDK-side definitions (Button, numeric, Boolean, Enum, and more) - Commands that trigger real actions (like Reset) require confirmation to prevent accidents ■ And more - Manage settings for multiple devices as separate Projects - Alerts notify you when a threshold is crossed or updates stop (Pro) - Save Session history and export it as CSV (Pro) - No hardware? Try the core features right away in Demo Mode ■ Free / Pro All the core features are available for free. Upgrading to Pro removes the limits on Projects, Commands, User Metrics, and graph displays, and unlocks Alerts, permanent Session storage, CSV export, and advanced System Metrics (one-time purchase, restore purchase supported, no ads). Languages: Japanese / English / Simplified Chinese (follows your device language) Requires: iOS 17+ The Kelvarune SDK (free and open source, for ESP32/Arduino Core) is available at: https://github.com/minervasoft-inc/Kelvarune
Screenshots
Verdict
The clearest difference is in-app purchases: BLE Term at none against Kelvarune's 1. BLE Term also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.6). On price and device support 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
Both are free to download. Kelvarune sells 1 one-off in-app purchase. BLE Term asks for nothing beyond the download.
| Parameter | BLE Term | Kelvarune |
|---|---|---|
| Price | Free | Free |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 0 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroshi Ohta | MINERVA, INC. |
In-app purchases
BLE Term
No in-app purchases
Kelvarune
- Kelvarune Pro$4.99








