I work on OnePassApps, the team behind app.onepassapps.com. Everything below was measured on the live build of our own Screen Recorder app (https://app.onepassapps.com/apps/screen-recorder?utm_source=devto&utm_medium=post&utm_campaign=screen-recorder&utm_content=screen-recorder-link) on 6 November 2026 - the one route in the site's catalogue of 22 live apps that no channel had written about yet.

What the panel says

The page opens with one line: "Record your screen, a window or a tab in this browser tab. Nothing is uploaded." Under it sits a two-stage setup and a recorder.

01 Sources. Three rows, and every one of them is a permission the browser owns, not us:

  • Screen capture: "The browser asks what to share when you start. Pick a whole screen, a window or a tab."
  • System or tab audio: "Only where the browser and the chosen source offer it. Tabs usually do; some screens and windows do not." The switch ships on.
  • Microphone: "Asks for permission when you start. Mixed in with any shared audio." The switch ships off.

02 Options.

  • 3-second countdown: "A short count before recording begins, so you can switch window." It is on at load.
  • Format: the readout is a plain definition row, not a dropdown - "MP4 (H.264 + Opus)". There is no select element and no format button on the page.
  • Limits: "Stops at 2.00 GB or 2:00:00. Warns above 1.00 GB."

Then the paragraph worth reading twice: "The clip is held in this tab's memory, not on disk, and is lost if you close or reload the tab before downloading it." The same paragraph adds "Long recordings use a lot of memory; stop and download in parts." and "No cursor or window effects are added."

The one button you cannot automate

Start recording is a real button and it is not disabled. What follows it is not ours: "Choose Start recording, then pick a screen, window or tab in the browser's own picker." That picker is a browser-native dialog, so a recording always ends with a person choosing what to share. That is also why this kind of tool cannot be pointed at a page and left to run by itself.

Below the button the empty state reads "Your recording appears here". The app's own guide (https://app.onepassapps.com/guides/screen-recorder?utm_source=devto&utm_medium=post&utm_campaign=screen-recorder&utm_content=guides-link) spells out the loop: pick your options, start, choose a source in the picker, then "Pause, resume or stop while the elapsed time and size are shown", preview the clip, choose a format (MP4 where supported, otherwise WebM) and download it before you close the tab.

What the app will not do

The guide is blunt about the edges. There is no editing, trimming or conversion - the sentence is "There is no editing, trimming or conversion." A desktop browser with screen capture is needed, because "most phones lack it", and the recorder "warns above 1 GB and stops at 2 GB or 2 hours".

MP4 is a promise the browser keeps, not the app. The guide's own answer to which formats you can download: "MP4 (H.264) where your browser supports it, otherwise WebM with VP9 or VP8 video and Opus audio."

Does anything leave the tab

We traced a full session on the live page over the browser's own network inspector: 120 requests, every one a GET, and not one request carried a body. The hosts were app.onepassapps.com (106), clerk.onepassapps.com (10), api.onepassapps.com (3) and static.cloudflareinsights.com (1). No clip was in that session, because no recording was started - the picker needs a person.

What the app stores locally is the same shell state every route on the site stores: a recent-apps list where "product:screen-recorder" now sits first, the app store's recent list, and the theme preset. No recording bytes, no file name, no duration.

The panel states the contract twice, in its own words: "Nothing leaves this tab." and "The recording stays in memory until you download it."

The cost line

"Is Screen Recorder free, and do I need an account?" Yes - it "runs in your browser with no account or payment details, and it never uses OnePassApps credits." Unlike the two hosted apps, this one spends no credit.

If you want to try it

Open Screen Recorder at the link above, choose your options, then press Start recording and pick a source in the browser's picker. Download the clip before you close the tab, and stop and save in parts if the recording gets long.

I work on OnePassApps, and this is our own build measured on 6 November 2026. If your copy of the panel says something different, trust your screen - the app changes faster than posts do.