What it is
Tethys is a web tool for deep damage calculation and build comparison in Wuthering Waves, geared toward theorycraft. Instead of returning a single DPS number, it's built to put several options side by side: comparing weapons against each other, evaluating the impact of different Resonance Chains (Sequences), measuring which Echo substats contribute most, and breaking down where the damage comes from with detailed breakdowns.
It's the tool for someone who isn't satisfied with "this build hits this hard" and wants to know why, and which of the possible alternatives performs better, with rigor.
What problem it solves
When you move from optimizing to theorizing, the questions change shape. It's no longer "how hard do I hit?" but "which weapon is best on this Resonator, does S0 vs waiting for S1 change the ranking, which substat to prioritize between Crit DMG and ATK%, how much does each Echo contribute to the total?". A single-answer calculator doesn't solve that: it gives you a number, but not the comparison between scenarios.
Tethys solves this by modeling the variables separately and letting you compare. Put two weapons on the same Resonator and see the real damage difference. Change the Sequence and watch how the output moves. Read a breakdown and understand which part of your damage comes from the basic, the Forte, the Resonance Liberation or the Sonata effects. That granularity is what separates a grounded recommendation from a hunch.
Differentiation
Tethys and WutheringTools compete in the same category —damage calculation in Wuthering Waves— but target different users.
WutheringTools optimizes for the fast, actionable answer on a specific Resonator: build the loadout, tell me the damage, tell me what change helps most. Low curve, immediate result.
Tethys optimizes for rigorous comparison: weapon A vs weapon B, S0 vs S1, breakdowns by damage source, substat priority. It offers more control and more depth in exchange for asking more of your time to learn it.
It's not that one is better: they answer different questions. Many players optimize daily in WutheringTools and turn to Tethys when a big decision comes up —which weapon to Convene for, whether a Sequence is worth it— that deserves comparing options in depth.
What people use it for
Comparing weapons before a Convene. Seeing how much real damage each candidate weapon adds on the Resonator you'd put it on.
Evaluating a Sequence's value. Measuring how much output rises going from S0 to S1 (or beyond), to decide if it's worth the pulls.
Prioritizing Echo substats with rigor. Knowing, with numbers, which substat pays off most in the next farming run.
Breaking down where damage comes from. Understanding which part of the total comes from each skill to optimize the rotation.
Backing guides and recommendations. Those who write builds use this kind of comparison as their basis.
Who this tool is NOT for
It isn't for the casual player who just wants to know "what do I put on this character" without getting into comparisons: WutheringTools is more direct and less demanding for that. It isn't a wiki or an account companion —it doesn't track pity, Waveplate or materials. And if the depth of theorycraft overwhelms you or you don't care about the why behind the numbers, Tethys's curve won't pay off: you'll reach a useful answer faster with a simpler tool.
How it's used in practice
- Select the Resonator you're going to analyze.
- Load its base build: weapon, Sequence, Echoes with their stats and Sonata effects.
- Define what you want to compare —for example, two weapons or two Sequence levels.
- Run the comparison and review the damage difference between scenarios.
- Open the breakdown to see which damage source explains the difference.
- Adjust substats or variables and repeat until the best option for your case is clear.
Honest limitations
The curve is steeper than WutheringTools's. In exchange for comparison power, it asks more time to understand the interface and parameters.
It's calculation, not account tracking. It doesn't handle pity, Waveplate or material planning.
The numbers are a model. They're for comparing options against each other, not as an exact prediction of your damage against a real enemy with its movement and resistances.
Sensitive to how you enter the data. Mis-entered stats or Sonata effects produce misleading comparisons without warning.
It depends on the update cadence. New Resonators and weapons can take time to become available depending on how the project is maintained.
How to get started
Go to tethys.gg and start with a Resonator you already play well: load its current build to have a realistic starting point. Then pick one concrete comparison —for example, the weapon you have against one you're considering— and let the tool show you the difference. Solving one real question at a time is the best way to tame the curve without getting lost among all the variables Tethys can model.
Alternatives to Tethys.gg
If Tethys.gg isn't the right fit, these Wuthering Waves tools cover similar needs.
