What it is
Crystal Math Labs (CML) is the original Old School RuneScape XP tracker. Active since 2013, it was the one that pioneered the EHP (efficient hours played) metric, today the de facto standard across the community for measuring skilling efficiency. It's built on the official hiscores and records your XP gains over time, records, progress graphs and a "Supreme" tracking system.
Its biggest asset is time: having run for over a decade, it accumulated the most complete and longest historical XP dataset of the three main trackers. For old accounts, CML often has data no one else kept.
What problem it solves
Before CML there was no systematic way to see how much you progressed in OSRS or to compare your grind efficiency. CML solved that by being the first to keep history on top of the hiscores and, above all, by inventing EHP: a way to translate XP into hours of optimal play, which made effort comparable across skills and across players.
Today WOM and Temple solve that problem too, but CML stays relevant for its archive: if you want to see the deep history of an account across the years, it's the source with the most memory.
Differentiation
It competes with Wise Old Man and TempleOSRS, and its place in the trio is clear:
- Crystal Math Labs is the OG, inventor of EHP and owner of the longest historical XP record; its value lies in the temporal depth of its data.
- Wise Old Man is the most modern and open source, with the best RuneLite integration and more polished competitions.
- TempleOSRS is the deepest on current features: drop logs, collection log tracking and very granular data for power users.
CML wins when what matters is the years-long history, not the UI or modern integrations. It's the ecosystem's historical reference.
What people use it for
- Looking up deep history: seeing an account's XP evolution across many years, with data other trackers don't keep.
- Calculating EHP: using the original efficiency metric to understand how many optimal hours a grind represents.
- Reviewing records: checking XP-gain records by day, week or month at a community level.
- Tracking progress over time: graphing your own evolution using "Supreme" tracking for frequent snapshots.
Who this tool is NOT for
It's not for those who value a modern, guided interface: its UI feels clearly more dated than Wise Old Man's. It's also not the choice if you want collection log, drop logs or tight RuneLite integration, where Temple and WOM are more developed. And if you're just starting and want the simplest and cleanest option, you'll probably prefer WOM.
How it's used in practice
- Go to crystalmathlabs.com and search for your OSRS username.
- Update your account to record a snapshot from the official hiscores.
- Review your XP gains by period and your EHP in the relevant tab.
- Check the progress graphs and the community records.
- Enable "Supreme" tracking if you want more frequent snapshots and a finer history.
Honest limitations
- Dated UI: the interface looks and navigates in an older way than Wise Old Man's or Temple's.
- Not open source: unlike Wise Old Man, you can't audit or contribute to the code.
- Fewer modern features: it lacks Temple's collection log and WOM's RuneLite integration and Discord bot.
- Narrow focus: it shines at historical XP and EHP, but not at the exhaustive boss, drop or collection tracking the other two offer.
How to get started
Go to crystalmathlabs.com, search for your name and update your account to start recording snapshots. If your account is old, it's worth checking what history it already has stored: that's its real advantage. Use it as a historical reference and for EHP, and combine it with a modern tracker like Wise Old Man for day-to-day use. It's free and you don't need an account to look up profiles.
Alternatives to Crystal Math Labs
If Crystal Math Labs isn't the right fit, these Old School RuneScape tools cover similar needs.
