Hollovar Labs
Small tools, engineered to do one job and to keep to themselves. Applications, built by one developer, documented like instruments.
Applications
Notes
- 0 third-party requests loaded by this website
- 0 Android permissions declared by TiltFlow, and one accessibility service you switch on yourself
- 0 network code in KB525C Control — it talks to the keyboard and a local pipe, and its source is public
- 02 applications published so far: one on Google Play, one on GitHub
The studio
Hollovar Labs is an independent software studio. It publishes small applications — Android utilities, Windows desktop tools, browser extensions, and whatever the next useful thing turns out to run on — that solve a specific, ordinary problem and then get out of the way: no accounts, no advertising, no analytics, and as few permissions as the job can be done with.
The name comes from the Hungarian Hollóvár, raven castle. The accents come off for international use; the raven stays, for the reasons ravens are usually invoked — attention, and a long memory.
The software is written by one developer: a physicist with a doctorate and a career spent on scientific and industrial software — measurement systems, instrumentation, hardware and software that have to agree with each other, and desktop and mobile applications in C#, .NET and Android. That background is the whole explanation for how these applications are built. An instrument that quietly makes up its readings is worthless, and so is an application that quietly makes up what it does with your data.
Applications
- Plate 01 TiltFlow Tilt your Android phone gently to one side and the page scrolls itself, in the applications you choose. Free, ad-free, and the one thing it asks for cannot read your screen. On Google Play
- Plate 02 KB525C Control Takes over the four collaboration buttons of the Dell KB525C keyboard on Windows: meeting controls in any call, launchers and macros otherwise, and an LED row your scripts can signal on. Open source, MIT, no network code. On GitHub
Further applications and extensions will be added to this index as they are published.
Privacy is a build decision, not a policy page
Most applications ask you to trust a paragraph. The more useful thing is to remove the capability, so the paragraph has nothing to promise.
TiltFlow asks you for exactly one thing: permission to run its accessibility service, which you switch on yourself in Android's settings. Android allows no other route for an application to swipe on your behalf, and swiping is the entire product. You can switch it off in the same place at any time.
What it never asks for is everything else. The released build declares
no Android permissions — not even internet permission — so it has no
route by which to send anything anywhere. And the service is declared
canRetrieveWindowContent="false", so Android will not hand it the contents
of your screen at all. It is unable to read your screen, rather than promising
not to. Both are in the application's manifest, where anyone can check them.
This page loads no fonts, scripts, analytics, trackers or resources from any other company's server. Everything it needs, including its typeface, is served from this domain. A site whose subject is privacy should not leak its visitors to a third party on the way to saying so. You can verify it in your browser's network panel in about ten seconds.
KB525C Control, the Windows utility, goes one step further: it contains no network code at all. Its source is public, and what it does read on your machine — a usage flag, a window title, a folder path — is listed in full in its own statement.
Every application carries its own privacy policy, and each says the same thing in different words: nothing is collected, and nothing leaves your device. They are collected on the privacy page, together with how this applies to anything the studio publishes next.
Contact
Questions, compatibility reports and suggestions are all welcome, and they reach the person who wrote the code. The support page has the common questions and the address.