Independent software studio

Serious software.
Built with care.

alxnsv.io builds focused tools for people who care about keeping their work accurate—and their data their own.

Focused toolsBuilt for a clear purpose Data stays yoursClear choices and controls Direct supportTalk to the maker

Selected projects

02 / growing

For 3D printing

Android available

Spoolmark

Filament inventory

Find the filament you own, check what is left, and keep every spool easy to find with printable QR labels.

Mixed-brand inventory
Weight & print history
Offline QR labels

Spoolmark inventory with filament colors, storage locations, and remaining weights — iPhone preview · Inventory & labels

A Spoolmark QR label linked to an inventory spool — iPhone preview · Inventory & labels

For developers

In development

Eldgard

Firestore workspace

Query your collections, review typed edits, and reproduce cloud data locally. Keep a read-only view handy on your phone.

Queries & typed edits
Local emulator copies
Read-only mobile companion

Eldgard desktop table showing typed fields in a sample Firestore collection — Development preview · Desktop & mobile

Eldgard mobile companion showing a read-only document with typed fields — Development preview · Desktop & mobile

The standard

Quality is a behavior.

Not a badge added at the end. These are the working principles behind every product carrying the alxnsv.io name.

Useful before clever

Every feature has a job. If it does not make the work clearer, safer, or faster, it does not ship.

Your data stays yours

Local-first where it matters, and no account required unless it creates real value.

Limits, clearly stated

Compatibility and tradeoffs are documented plainly. Trust starts with saying what a product cannot do.

The person behind the label

A name behind every release.

alxnsv.io is the independent product studio of Alex Nosov. Every product decision, support reply, and build note comes from the same place—one maker accountable for the details.

Say hello Read the build notes