v0.19.0 · unsigned pre-alpha · local-first

v0.19.0 stable desktop release · local-first

The local-first football match cockpit

The numbers remember everything. The beautiful game keeps the last word.

Open any match. Compare two genuinely different model voices, see the facts behind the fixture, and put an upcoming prediction on the record. The engine owns every number; optional AI can explain, but never edit.

Download or run locally See Golavo in motion GitHub

Study → predict → verifySeparate model voices, fixed probability lenses, and explicit evidence limits.

Golavo Match Study Desk comparing separate Elo and Dixon–Coles voices with exact-score and goal-model probability lenses — Study → predict → verifySeparate model voices, fixed probability lenses, and explicit evidence limits.

From matchday question to append-only local record.

Three real views of Golavo in use. Start with the fixture, choose how deeply to read it, then keep the model’s claim beside the result that judged it.

Games

Open on football, not setup.

Search internationals, the top-five leagues, and UEFA club competitions. Past and upcoming fixtures share one local index, so the product begins with a match instead of a configuration screen.

Explore the Match Cockpit

Golavo Games home showing match search, competition shortcuts, and recent results — One index for the matches Golavo can actually explain.

Match Cockpit

Change the depth. Keep the same truth.

Casual mode reads like a matchday programme. Expert mode exposes fitted Elo, Dixon–Coles values, markets, sources, and audit context. The presentation changes; the deterministic forecast does not.

Compare Casual and Expert

Animated tour through the six Match Cockpit chapters in Casual mode — Six chapters keep the first read calm; the deeper cut stays one switch away.

Model Lab

Keep the claim after the whistle.

Methodologies, held-out backtests, immutable seals, and scored successors stay together. A result can judge an earlier forecast; it cannot revise what the model said before kickoff.

Inspect Model Lab

Golavo Model Lab showing Track record, Backtests, Methodologies, and Sealed forecasts — The audit machinery stays visible enough to challenge.

1.0 Before kickoff · exploratory

Open any match. Read both voices.

Golavo opens on games, not an audit form. Choose a fixture, past or upcoming, and use the fixed Study Desk to compare separate W/D/L voices, exact score and goal-line marginals — with the source behind every claim and the uncertainty left visible. Nothing here is ranked or on the record yet.

Golavo Games home with match search, league shortcuts and recent World Cup results — Games Internationals, the big-five leagues, and UEFA club competitions.

Animated tour through the six Match Cockpit chapters — Casual read A polished programme with the technical depth kept out of the way.

Expert mode showing fitted Elo and Dixon–Coles values under the hood — Expert read Full model values, markets, sources, and audit context.

For a casual read

Games, separate model voices, exact score and goal-line probabilities, three useful facts, and a clear “we don’t know” when data is thin.

Learn the Match Cockpit

For developers and researchers

Chronological backtests, immutable JSON artifacts, source hashes, cutoff gates, calibration, and a single numeric authority.

Compare Casual and Expert

2.0 At kickoff · on the record

The claim stops moving.

A cockpit preview is exploratory until you seal it. The seal freezes the model, inputs, cutoff, source snapshot, probabilities, and digest. Your own score call locks at kickoff with a SHA-256 fingerprint alongside it. From this moment the record is append-only: no path in the app — not a refresh, not a correction, not the AI layer — can rewrite it.

Preview compare model voicesSeal lock the claim before kickoffScore append the result, never rewrite

Open Model Lab

Example digest. Every sealed forecast carries its own SHA-256 fingerprint.

Animated walkthrough from an exploratory model council to an immutable sealed forecast and a separate scored result

Open full size ↗

3.0 After full time · scored

The result scores it. Nobody gets to forget.

A newer snapshot writes a scored or voided successor; the first record is never edited. Exact scores, right outcomes, and a strict beat-the-models bonus build a private season against five disclosed deterministic rivals. Track record, held-out backtests, methodologies, and immutable seals stay together in Model Lab for anyone who wants to challenge the result.

Golavo My Season standings and pick history against five model rivals — My Season Only the matches you call; no money, odds, account, or upload.

Golavo Model Lab with Track record, Backtests, Methodologies and Sealed forecasts — Model Lab The audit machinery, organized rather than hidden.

Golavo chronological backtests comparing model log loss, Brier, ECE and RPS — Backtests Held-out scores; leadership can flip by league and season.

Learn picks and points

Underneath every stage · boundaries, not a step

The engine decides. AI may explain.

Deterministic code produces the probabilities and score matrix. The Commentator’s Notebook turns fixed, source-backed facts into a glanceable briefing with detail behind disclosure. Optional local or BYOK AI receives a guarded read-only bundle and can disappear without changing the match analysis by a single digit.

Every displayed number is engine-owned
Model voices stay separate instead of being averaged
Research fetches only a source you selected and never makes it authoritative
Unsupported AI output fails back to deterministic analysis only

Set up local AI

The deterministic engine owns every number, facts add source-backed context, and optional AI receives a read-only guarded bundle

Open full size ↗

Local integrity · bundled in v0.19.0

Local data, with receipts

Refresh approved CC0 sources manually or with consent. Followed matches get targeted checks, deduplicated change history, and an exact-time calendar export. Trust Center keeps application receipts, proof verification, ledger backup, and local checkpoints together. OpenLigaDB stays an optional, display-only ODbL overlay whose bytes never join CC0 or model data.

Open the trust boundary

Leagues, Europe, and eras

Follow competition-local strength and workload, inspect a domestic season’s fixture gate, switch between separate World Cup model voices, or read the women’s 1991–2019 record beside the men’s 1930–2022 archive. Historical records and research stay pinned to their exact source, competition, and era; neither is a model input. A separately enabled Transfer Desk reads one bounded provider window for an exact top-five club and leaves unknown payment components visibly unknown.

See the competitions
Open Transfer Desk

Golavo Transfer Desk before an explicit provider fetch, with exact club selection and the payment evidence boundary — Transfer Desk Foreground-only provider evidence; missing payment structure stays missing.

Local club room · bundled in v0.19.0

Your clubs, not a profile

My Teams keeps exact competition-and-club favorites in a local browser preference. Current points, one named outlook voice, the next five fixtures, guarded stakes, and follow/pick links share one room without an account, sync service, or new model input.

Build My Teams

World Cup lab showing the women-first source-backed history archive, pedigree table, final four, and player awards — World Cup history Women’s and men’s records, beside each other and outside every model.

One archive, an explicit boundary

Titles, finals, appearances, final fours, and player awards come from one hash-verified Fjelstul World Cup Database snapshot under CC-BY-SA-4.0. Golavo selects and summarizes those rows; it never joins them to the forecast index, trains on them, or turns them into a seal.

Inspect exact coverage

Matches indexed: 100,000+
Model voices: Two, never averaged
Runtime: Local loopback
Authentication: Per-launch token
Cloud AI: Off by default
Outside signals: Opt-in BYOK

Three ways in. Core forecasting stays local.

Use the browser UI from source, or install the desktop app with no Python or terminal required. The desktop buttons resolve directly to the newest stable files published by Golavo's release workflow. Refreshes, research, cloud AI, providers, and update checks remain separate opt-in network features.

macOS · Windows · Linux

Run in your browser

Clone the source, install dependencies once, then run make dev. Golavo opens at 127.0.0.1:5173.

See browser setup Python 3.12+ · Node 22+

Apple Silicon · macOS

Download the Mac app

Install from a DMG, drag Golavo to Applications, then open it locally.

Download .dmg Newest stable release

x64 · Windows 10/11

Download the Windows app

Use the per-user EXE installer; an MSI is also available on every release.

Download .exe Newest stable release

Loading the latest stable installer links from GitHub Releases…

Desktop installers are not yet OS-signed. Gatekeeper or SmartScreen will warn on first launch; verify the included SHA256SUMS.txt and follow theinstallation guide.

All releases & checksums

No bet placement. No oracle. No moving the goalposts.

Let the model speak once, then keep the tape running.

Golavo is free, open source, local-first, and currently an unsigned v0.19.0 pre-alpha.

Choose how to run Golavo Read the methodology View source