Time, measured beautifully, in 47 languages
Tauvio is a set of twenty free browser time tools with a paid timesheet and countdown-page wedge, built by Moon Sherpa Labs as a working demonstration of international SEO done as engineering. One codebase serves 47 languages. Each language routes at a native URL chosen from keyword and search-results research in that market, and a page enters the sitemap and hreflang cluster only when its copy in that language has been written for real. Ten languages were authored at launch and all 47 within the first week. The case study below opens the live search data behind that claim.
The biggest search demand for simple time tools is not in English. Head terms such as “kronometre” in Turkey, “cronometro” in Brazil and “Arbeitszeitrechner” in Germany each draw tens or hundreds of thousands of searches a month, and the pages holding those results are often single-language sites with page-level link profiles a new domain can match. The American auction for the same tools is the crowded one.
Most multilingual sites fail in one of two ways. They machine-translate everything and publish dozens of near-identical pages that search engines treat as scaled duplicate content, or they translate a heading over an English article and call the locale done. Either way the sitemap, the hreflang cluster and the page’s own noindex decision drift apart, and the audit findings pile up.
The work had to be a real product, not an SEO exercise: a stopwatch that keeps accurate laps, a timer that survives a locked phone, a chess clock with increments, a time-zone converter that applies each zone’s own daylight-saving rules, and an hours calculator that applies each country’s actual overtime law and says which statute each figure comes from.
From the underlying data to the moment someone uses the product, each decision serves the work.
For each locale the team pulled keyword volume, difficulty and the composition of the top ten results, then read page-level authority (URL rating and referring domains) rather than domain rating. That analysis fixed the native slug and the H1 for every tool page and corrected several assumptions, including the Italian hours term and the real French phrasing.
A second research pass measured what people search for beside each tool in every market. It found that current time, time-zone pairs, week numbers and preset timer lengths each outweigh the classroom and quiz timers that prompted the question, so those became the next tools, alongside classroom, exam, kitchen, interval and chess-clock timers.
next-intl pathnames translate internal English routes to ASCII native slugs per locale, so German is served at /de/stoppuhr and Turkish at /tr/kronometre while the app links by route name. A language whose copy is not yet written keeps the English slug. The slug table is held to the market briefs by tests, so a URL is never a naming choice made in code.
A page is indexable in a locale only when its catalog carries that page’s namespace and the article is at least half the length of the English original. That single check produces the page’s robots meta, its hreflang alternates and the sitemap, so the three can never disagree. Untranslated pages still render, in English under localized chrome, with noindex.
Programmatic families multiply each tool by what a market actually asks: overtime law per country, countdowns to each market’s own holidays, preset timer lengths, time-zone pairs and countdowns to a clock time. Every one passes through the same indexing rule, so depth never outruns translation.
Every tool page opens with a direct answer, puts the tool above the fold with keyboard control, carries native copy and ends with real questions people search, emitted as WebApplication and FAQPage structured data. A plain-text llms.txt and an explicit crawler allowlist make the same content easy for AI assistants to cite.
Every tool, CSV export, JSON backup and printing is free, with no account. A one-time Tauvio Pass adds a theme-designed PDF timesheet, a saved library of finished weeks, and a countdown page in your own colors and logo without the Tauvio credit. Payment runs through Stripe on Tauvio’s own checkout page, which can offer the visitor’s local currency and payment methods.
Each locale’s market brief records the head terms, their volume and difficulty, the named page-one incumbents and their weaknesses, the register the copy must use, and the statutory facts the hours page may state. Translation prompts and alignment checks read the same file.
The public sitemap lists a page only when its translation passes the guard. The live view on this page reads that sitemap per language and splits each locale’s URLs into tools and programmatic families, so the footprint you see is the footprint search engines see.
Per-script fonts, right-to-left layouts with isolated numerals, and zone and city names in the page’s own language keep Arabic, Hebrew, Thai, Japanese and Devanagari pages as carefully set as the English ones.
Geist type, tabular numerals, a τ mark, and a “worldline” motif in place of progress bars. Four living environments with original ambient sound change the mood around a timer. Cobalt stays the only saturated color, reserved for the running state and the now marker.
Interactive views built from how Tauvio actually works, including the public data it runs on. Pick one to explore.
How Tauvio works
A closer look at the technology and integrations behind Tauvio.
A conceptual view of the technology groups. Layer positions do not represent deployment boundaries.
EXPLORE THE BUILD / Tauvio
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Tauvio is a free set of twenty browser time tools made by Moon Sherpa Labs, including a stopwatch, timers for the kitchen, classroom, exams and intervals, a chess clock, countdowns, the current time, a time-zone converter, date calculators, an hours calculator and a timesheet. It is published in 47 languages at tauvio.com. Tauvio Pass is the paid, one-time upgrade.
Every language is routed at a native URL chosen from keyword research in that market, but a page is indexed only when its copy has actually been written in that language and is at least half the length of the English original. Pages that fail that check still render, in English, with a noindex tag, and they are left out of the sitemap and hreflang cluster.
The URL counts and page families are read from tauvio.com’s public sitemap when the panel loads, refreshed at most hourly. Head-term volumes are cached research pulls from September 2026. When a search results feed is configured, page-one positions come from it; otherwise the panel links to the live Google results for that language and country.
Yes. The routing, indexing guard, hreflang and sitemap machinery, the market-brief format and the research method are reusable. The work for a new product is the per-market research and the native copy, which is what this system is built to make safe.
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