EUC State Of Health Analyzer

EUC State Of Health Analyzer is a science & education application developed by Gauthier LE BARTZ LYAN, packaged as a single Android APK of version 1.5 weighing in at 29.04 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

1. Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
2. File size is a light 29.04 MB, so it installs quickly even on modest connections.
3. This build is signed by "Gauthier LE BARTZ LYAN" — always verify the developer name matches what's listed on the app's official store page before installing an update.
4. After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
5. We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

EUC SoH is a state-of-health (SoH) analysis tool for electric unicycles. It processes ride logs from popular EUC logging apps to estimate battery health, internal resistance, and long-term degradation patterns.

The app runs entirely on-device, without trackers or network access. It is fully free and open source under the AGPL license.

Main features:

• Scan storage recursively to discover WheelLog and EUC World subfolders and CSV log files automatically (optional support for DarknessBot dumps).


• Parse ride logs and separate accepted files from rejected ones, with explicit rejection reasons (e.g. too few data points, invalid Req computation).


• Compute state-of-health metrics such as equivalent resistance (Req) and CUSUM-based indicators.


• Display interactive charts (MPAndroidChart) to visualize resistance evolution and SoH trends over time.


• Maintain per-wheel file management: inspect logs per wheel, exclude problematic files, and keep a clean dataset.


• Export a structured archive for resale, expertise, or maintenance: PDF report (soh.pdf), statistics CSV, and associated logs organized by wheel identifier.


• Share generated PDF and archives directly via messaging apps, email, or cloud storage.


• Work fully offline: no account, no registration, no external server.

Typical workflow:

A - Your own wheel

• Record rides using WheelLog, EUC World, or DarknessBot.


• The app scans storage for folders containing compatible logs.


• If using DarknessBot: export a dump (.dbb) and enable .dbb search in the app.

B - Purchased wheel with EUC SoH archive

• Import the archive into the app.

Start analysis

• Scan subfolders recursively to find compatible CSV files and group them by wheel.


• Run SoH analysis to compute Req and related metrics.


• Inspect charts to evaluate long-term battery degradation.


• Review accepted and rejected log files.


• Export a PDF report and structured archive for sharing or record keeping.

EUC SoH is intended for technically minded riders, enthusiasts, and repair shops who need transparent and reproducible diagnostics for electric unicycle battery health.

Based on: https://hal.science/hal-05553115

Is EUC State Of Health Analyzer free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does EUC State Of Health Analyzer require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is EUC State Of Health Analyzer safe to install?
We link to the exact APK published by Gauthier LE BARTZ LYAN. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update EUC State Of Health Analyzer?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

1. Tap the Download APK button above and save the file to your device.
2. Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
3. Open the downloaded io.github.eucsoh.android.apk file from your Downloads folder.
4. Tap Install and wait for Android to finish.
5. Open «EUC State Of Health Analyzer» by Gauthier LE BARTZ LYAN and grant only the permissions it actually needs.
6. Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.