Solar is an app to monitor off grid solar setups over bluetooth.
About this app
Solar is an app to monitor off grid solar setups over bluetooth.
It supports simultaneous monitoring of the battery and solar charger. When both devices are connected it can calculate the inverter power.
Unlike the OEM app it does not require fine location access and does not have internet permission.
Currently only the Junctek KH-F battery monitor (KH110F/KH140F/KH160F) and Ruijing 60A MPPT solar charger (sold under various brands like LiTime, HQST, etc.) are supported.
Features: - Real time voltage, current, power, and energy readings - Live plotting of power readings of the charger, battery, and inverter - Reading history from the solar charger
Licensed under GPL-3.0-only.
What's New in v1.0.5
Imported from the F-Droid repository index.
- - Fix charger sensor temp readings below freezing
- - Fix crash when rotating to landscape
Version history
Dec 31, 2025 · 2.9 MB · Android API 31–34 · code 5
Imported from the F-Droid repository index.
- - Fix charger sensor temp readings below freezing
- - Fix crash when rotating to landscape
SHA-256 c46ccab3a07561867ad02f064985c2576364af2e3a23921eb1aa206b7f3b533a
Nov 7, 2024 · 2.9 MB · Android API 31–34 · code 4
Imported from the F-Droid repository index.
- - Fix dependency info block
SHA-256 b16de7f3c7115db3d2f57cd372de4a737b461c22d3b0b959e29f0dd633cc5421
Aug 21, 2024 · 3 MB · Android API 31–34 · code 2
Imported from the F-Droid repository index.
- * Initial release
SHA-256 237296f42dea59d317aa58d71f71e4852b3427a71b4db44247dee01c0ace3065
Will it run on your device?
69%
- Targets newer Android builds, so legacy devices may be excluded.
- Multiple CPU architectures are covered.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.codelv.solar is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.0.3 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Solar first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Solar, and a listing is removed when the evidence for it stops holding up.
Get Solar
Every source we list for com.codelv.solar is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
c46ccab3a07561867ad02f064985c2576364af2e3a23921eb1aa206b7f3b533a
Signing certificate
802630d5d6e6f35d25a7acd9172b8a438281ce298217f846652704de6f5c2510
Permissions Required
What each permission lets Solar do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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