About Trailium
Trailium is a photography application published by Observin under the package name com.observin.proto. This listing lays out what the app belongs to, what it needs from your device, and how much room it takes up. Read through for the practical details before you install it.
A photography app from Observin
Trailium sits in the photography category, which frames the kind of work the app is built around: handling images rather than documents, games, or office tasks. Observin is listed as the developer behind the build, so anyone verifying the app's identity can match that name against the accompanying package identifier.
What the build needs from your device
The build requires Android 8.0 or newer. Handsets already running a more recent release should meet the requirement without any extra checks, while older devices may need a system update before the application can be installed and opened.
Install footprint and package identity
The installer occupies 54.0 MB of storage, so leave a little breathing room alongside the space the app will want once it is unpacked and running. The package is registered as com.observin.proto, the string to inspect if you need to confirm what is present on a device.
Release details and listing notes
The current build is 1.2.21, issued on 2026-10-01. No content rating accompanies this entry, so anyone assessing suitability for younger users should note that no age guidance has been supplied with the listing.
APK Information
- Version
- 1.2.21
- Size
- 54.0 MB
- Android
- 8.0+
- File type
- APK
- Updated
- Oct 1, 2026
- Package
- com.observin.proto
- Developer
- Observin
Features
Photography tools
Install footprint
Version details
Frequently Asked Questions
Which devices can run Trailium?
Trailium is built for devices that meet the minimum system requirement stated in this listing, or run something newer. If your phone is on an older release, it may refuse the install until the device is updated. Check your current system version against the stated requirement before starting the installation so you are not left with an app that will not open.
How much storage should I set aside for Trailium?
The installer itself is 54.0 MB. That figure covers the download package only, so budget some additional space for the unpacked application and any images or working files it creates while in use. Devices already close to their storage limit should free up room first, as a nearly full device can cause an install to fail partway through.
What version does this listing ship, and when was it released?
The latest build listed here is 1.2.21, dated 2026-10-01. This is the version referenced throughout the listing, so use it when comparing against other builds you may already have installed. If you are tracking updates across several devices, matching this exact version string is the simplest way to confirm that every device is running the same code.
What is the package name of the app?
The package identifier for Trailium is com.observin.proto. This is the permanent string the system uses to recognise the application, independent of how the app is displayed on your device. It is useful when you want to confirm exactly which app is installed, locate its files, or distinguish it from similarly named software.
Is there a content rating for Trailium?
No content rating has been supplied with this listing, so no age guidance accompanies the current entry. Anyone assessing the app for younger users should treat the rating field as unavailable rather than assuming any particular classification, and rely on the developer name, Observin, and the photography category when making a judgement.
