Is your simulation working in the lab, but failing when sensor noise hits?
Resonix can help. We build mathematical software for systems that cannot afford to fail.
No credit card · 2-minute install · Runs locally and safely
Defense & Aerospace · Drones & Robotics · Digital Twins · Energy & Industrial · Finance / DeFi · Research
Do these problems sound familiar?
- Simulation runs clean on benchmarks, then dies when you pipe in IMU, radar, or plant noise
- Step size collapses, wall time explodes, or the run exits with no useful error
- Team cycles through RK45, BDF, Radau, CVODE; none survive under the same noise profile
- Months lost reconciling sim vs field because the integrator was never validated on noisy data
- You don't know if you have a solver problem or a model problem, so you fix both and waste both
Without a diagnosis
You swap solvers by guesswork. Each dead end costs integration time and credibility with your validation team.
With our funnel
Classify the problem first. Only move to a paid integrator when stiff + noisy is confirmed, not before.
Diagnose your solver problem before you buy anything.
SolvScout Free
Diagnose your solver problem and find the right solver before wasting time on the wrong tool.
SolvScout helps engineers classify their ODE / solver problem and identify the right solver path. It combines problem diagnosis and solver recommendation in one free tool.
- Diagnoses whether your problem is standard, stiff, noisy, unstable, or high-dimensional
- Recommends the right solver based on your problem profile
- Points to SolvSRK only when your model needs a specialized solver
No credit card · 2-minute install · Runs locally
Watch: classify → recommend · ~2 min
Run the same model under noise, side by side.
SolvSRK Developer 30-day trial
Hybrid integrator for the regime where stiffness and measurement noise interact. Drop-in library: keep your platform, replace only the solver underneath. Not a model. Not a simulation platform. Not sensor fusion.
- Survives stiff + noisy regimes in validated benchmark classes
- Less failure, less rework, faster validation
- Drop-in: replaces solve_ivp / CVODE, not your model or stack
- Python and C interfaces · on-premise only
- Dead zones published: we document where SolvSRK does not win
- Early Access pricing locked during trial
Early Access · First 150 customers
30-day trial · No charge until you convert · Up to 3 seats per company on Early Access
No credit card for free version · 2-minute install · Runs locally and safely
SolvSRK-Edge (embedded / redistribution) is a separate program license, not included in Developer trial. Contact BD →
Watch side-by-side comparison
# σ=0.01 IMU noise · dim=24 · stiff GN&C
scipy RK45
✗ failed · nfev cap · t=1.2s
SolvSRK
✓ complete · residual 1.1e-6 · wall 0.4s
Common questions
Why free first?
Most teams don't need SolvSRK. SolvScout tells you in minutes whether stiff + noisy is your failure mode, before anyone asks for a PO. We'd rather send you away correctly than sell you the wrong tool.
Are you already using SUNDIALS / scipy / MATLAB?
Keep them for clean problems. SolvSRK addresses the regime where those tools hit 0% survival under noise. Step 1 shows you which regime you're actually in.
Is this a cloud API?
No. On-premise libraries only. Your data and models stay on your infrastructure throughout evaluation and deployment.
What about embedded / edge deployment?
SolvSRK-Edge is licensed per program, separate from the Developer trial. After a successful Step 2 pilot, contact us for an embedded SOW.
Is SolvSRK for every ODE problem?
No. Stiff + noisy conditions only. SolvScout will route you elsewhere when the failure mode doesn't match, and we publish the dead zones.
What if SolvScout recommends a non-Resonix solver?
Follow the recommendation. The point of Step 1 is an accurate diagnosis, not a sales pitch.
Interested in a solution for your team, your program, or an embedded deployment?
- 4+ seat site licenses
- Side-by-side pilot on your ODEs under NDA
- SolvSRK-Edge: embedded / redistribution (program license)
- HIL evidence packages and M&S integration
- Defense / aerospace / industrial programs
- Custom SOW and enterprise agreements
Not ready? Start at Step 1, free →
Diagnose first.
Buy only what you actually need.
Two-minute install. No account. Know whether you need SolvSRK before anyone talks pricing.