Camera endoscope

Review by eFreeware

Inspection cameras solve a specific problem: seeing inside a drain, an engine bay or a wall cavity without taking anything apart. The camera itself is only half of that setup, since the phone or tablet on the other end needs software that can actually read the feed. Camera endoscope, from developer Fa9ssa, is built for exactly that job — it takes a USB or OTG endoscope camera and turns the Android device into the display and recorder.

The app is free, sits in the Libraries & Demo category and carries a 3.3 average from 1,106 ratings, with more than 100,000 installs. It was released in October 2025 and last updated in August 2026. Those numbers suggest a tool that a fair number of people have tried, with a rating that leaves room for improvement rather than uniform praise.

Built for people who already own an inspection camera

The clearest audience here is anyone who owns a USB endoscope, borescope or inspection camera and wants to view its feed on a phone screen. The app is aimed at technicians, plumbers, mechanics and DIY users, and the scenarios it covers include pipe inspection, plumbing checks, car repairs and machine maintenance. If your work involves looking into spaces your eyes cannot reach, this is the category of tool you would reach for.

It also lists microscope cameras among the supported hardware, which widens the appeal slightly to anyone using a USB microscope for close-up inspection work. The common thread is external hardware: this app is a viewer and recorder for a camera you connect, not a camera in its own right.

Because the app depends on that hardware, a USB OTG cable is part of the setup. The developer describes the connection as plug and play with no configuration needed, and includes an OTG checker tool so you can confirm whether your device supports USB OTG before troubleshooting anything else. That checker is a thoughtful inclusion, since OTG support varies across Android hardware and is the most likely point of failure in a setup like this.

Live view and capture

The core of the app is a live HD view from the connected camera. The developer says you connect the camera, open the app and tap the camera icon, after which the feed appears on screen in real time. Recording is handled in MP4 at 720p, and stills are saved as JPG files. Audio can be captured alongside video using the device microphone, which matters for anyone narrating an inspection or noting findings as they go.

The capture formats are worth noting for practical reasons. MP4 and JPG are about as widely compatible as it gets, so clips and photos should open in most players and editors without conversion. The 720p ceiling is modest by modern standards, but for inspection work the priority is usually a clear, well-lit view of a small area rather than high resolution across a wide frame.

The developer pitches the app as optimized for any USB endoscope camera, with a simple design and fast connection. That is a marketing claim rather than a specification, and the 3.3 rating suggests real-world results vary — which is unsurprising given how many different endoscope models and Android devices exist. Treat the plug-and-play promise as the goal rather than a guarantee for every combination of hardware.

Viewing, sharing and managing your captures

Recorded media lands in a built-in gallery, where you can view, delete or share clips and photos. For inspection work this is a more useful feature than it might sound. A plumber documenting a blockage, or a mechanic showing a customer a worn part, needs to hand over evidence rather than just describe it, and sharing directly from the gallery covers that.

Deleting from the same place keeps storage manageable during longer jobs, when a run of failed angles and blurry frames can pile up quickly. Keeping capture, review and cleanup inside one app means you are not switching between tools mid-inspection, which is the kind of small convenience that matters when you are holding a cable in one hand and a phone in the other.

What the app costs you

Camera endoscope is free to download, and it contains ads. It also offers in-app purchases. The endoscope camera and an OTG cable are separate purchases the app assumes you have made.

The free download makes the app easy to try against whatever camera you own, which is the sensible approach with a tool this dependent on hardware compatibility. Whether the ads and purchase options sit comfortably within an inspection workflow is something each user will judge for themselves.

How it compares with the alternatives

The obvious alternative is the viewer software that ships with an endoscope camera. Many manufacturers bundle something, and if that software works with your phone, it costs nothing extra and is matched to the hardware. The trade-off is that bundled apps are often limited to one brand and can be dated or awkward to use.

A second option is a general-purpose USB camera viewer, the kind of app used for webcams and external cameras of all sorts. These tend to be broader in scope but less focused on the inspection workflow — recording formats, gallery handling and OTG diagnostics are not always front and center. Camera endoscope narrows its aim to inspection hardware and the tasks around it, which is a reasonable argument for choosing it over a general viewer.

The third path is a dedicated inspection camera with its own screen and storage. That avoids phone compatibility entirely, but it is a separate device to buy, charge and carry. If you already own a USB endoscope and a phone with OTG support, an app like this is the cheaper route. The OTG checker inside Camera endoscope is a useful first step before committing either way.

A focused tool for USB endoscope owners

Camera endoscope does one job: it displays and records the feed from a USB or OTG inspection camera. Within that scope it covers the essentials — live view, 720p MP4 recording, JPG stills, microphone audio, a gallery for managing captures, and a checker for OTG support. For a free download, that is a sensible feature set for anyone doing pipe, engine or machine inspection work.

The caveats are worth weighing. It needs compatible hardware, including an OTG-capable device and a cable, and the 3.3 rating from over a thousand reviewers indicates that not every hardware combination works smoothly. Ads and in-app purchases are part of the package. If you own a USB endoscope and want to see its feed on your phone, this app is built precisely for that, and the free download makes trying it a low-risk step.