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Pricing
Every simulation tool on Photizon is free to use. A free account adds the full materials database, every control and data export. Plus keeps your work.
Free and Plus
Free
$0
- Every simulation tool, see the list →
- Academy tutorials and per-tool manuals
- The full materials database — 3,500+ cited entries, searchable inside a tool
- Every analysis tab and readout, plus CSV export
- Share any setup by link
Plus
$99/yearor $10/month
Keep your work
Everything above, plus somewhere to keep it.
- Save named designs, reopen them anywhere
- Backed up as you edit — restore any version
- Organize the library — folders, tags, notes and stars
- Export any plot as a figure — SVG, PNG or PDF
- Define up to 500 of your own materials
- Cancel any time. You keep read, export and delete.
Pro products
Plus keeps your work. The heavy engines are sold as separate Pro products, one domain at a time: coating optimization, ray-optics design, illumination and stray light, mode solving, grating and propagation. Each Pro product includes Plus, so you never pay for the same thing twice.
Thin-Film Pro
— available now$349/yearor $35/month
Design and optimize optical coatings — reach a spectral target you define, then see how the design holds up against real deposition error.
Free simulator
Model a stack you already have.
- Spectrum — reflectance, transmittance and absorption against wavelength, at any angle and polarization
- Layer stack editor — add, remove and reorder layers, thickness or QWOT entry
- Starting designs — AR coatings, mirrors, bandpass, edge and notch filters
- With a free account — field profile, layer absorption, thickness and angle sweeps, admittance, ellipsometry, and CSV export
Thin-Film Pro
Find the stack you need.
- Set the target — reflectance, transmittance or absorption at the wavelengths, angles and polarizations you choose, each with its own weight
- Refine what you have — the optimizer moves thicknesses to hit the target and leaves the layers you lock alone
- Grow what you don't — it inserts new layers where they earn their place, then re-optimizes
- Tolerance the result — how far the spectrum drifts under realistic thickness and index error, which layer costs you the most, and the fraction of coating runs that would still meet your target
- Everything in Plus — saved designs, and your own materials
Methods: Levenberg-Marquardt refinement, needle synthesis, Monte-Carlo tolerance analysis.
Ray-Optics Design Pro
— available now$1,499/yearor $150/month
Optimize and tolerance lens and mirror systems — reach the image-quality target you define, then see how the design holds up against real fabrication and assembly error.
Free designer
Design and analyze it by hand.
- Prescription editor — lenses, mirrors, conics, aspheres and folds, or import a .zmx or .seq file
- Layout and ray trace — real traced rays, first-order data, pupils and chromatic analysis
- Starting designs — patent lenses from the Cooke triplet to the Tessar, plus reflecting telescopes
- With a free account — spot diagrams, ray fans, Seidel aberrations, wavefront maps, PSF, MTF, field plots, and any glass in the catalog
Ray-Optics Design Pro
Find the prescription you need.
- Set the target — spot size, focal length and color at the fields and wavelengths you choose, each with its own weight
- Refine the design — the optimizer moves the radii, thicknesses, conics and aspheres you flag as variables, and nothing else
- Rank what hurts — sensitivity tables over radius, thickness, index, wedge and decenter errors, worst first
- Predict the yield — Monte Carlo over your whole tolerance budget, refocus included, and the fraction of builds that still meet your spec
- Everything in Plus — saved designs, and your own materials
Methods: damped least-squares optimization, sensitivity at the full tolerance, seeded Monte-Carlo tolerancing.
Illumination Analyzer Pro
— available now$999/yearor $100/month
Model illumination and stray light on real hardware — your own coatings, luminaire file and waveband in the trace, then the ranked path table behind every result.
Free analyzer
Build the scene and trace it.
- Scene editor — spheres, boxes, cylinders, cones, lenses, baffle tubes and CSG cuts, with mirror, diffuse, scattering or bare Fresnel surfaces
- Starting scenes — ghost ladders, baffled tubes, CPC concentrators, integrating spheres and light pipes
- Irradiance map, far field and energy ledger
- CSV export of the map, the far field and the ledger
Illumination Analyzer Pro
Trace what you'll actually build.
- Coat the surfaces — a real layer stack on any Fresnel interface, used at the angle and wavelength each ray arrives with
- Bring your own source — import a luminaire file (IES LM-63) and trace the distribution it actually emits
- Trace the whole waveband — spectral bins, each with its own map, ledger and error bars
- Take the path table with you — up to 4,096 distinct paths per detector, exported as CSV
- Everything in Plus — saved designs, and your own materials
Methods: transfer-matrix coating tables, per-bin spectral sampling, luminaire-file interpolation (IES LM-63).
Questions
What happens to my saved designs if I cancel, or if my trial ends?
You keep them. Canceling stops new saves and edits — it does not lock you out of what you already stored. You can still open your designs, read your notes and version history, export the whole library as a JSON file, and delete any design or material, for as long as your account exists. Custom materials you defined stay viewable and stay usable in simulations; you just can't create or edit them any more.
How do I cancel?
From your account page, through the Stripe customer portal. No email, no form, no retention call. Canceling stops the next renewal; access runs to the end of the term you already paid for.
Can I get a refund?
14 days, no questions asked, on your first paid term — your first year if you subscribed annually, your first month if you subscribed monthly. Email support@photizon.com within 14 days of that charge. Renewals after the first term aren't refundable except where the law says otherwise.
Monthly or annual — which should I pick?
Plus is $99 a year or $10 a month. Thin-Film Pro is $349 a year or $35 a month; Ray-Optics Design Pro is $1,499 a year or $150 a month; Illumination Analyzer Pro is $999 a year or $100 a month. Monthly comes to $120, $420, $1,800 and $1,200 over a year, so annual is cheaper if you know you'll stay. Monthly is the honest answer if you only need it for one project. To switch, open the billing portal from your account page and pick the other plan — it's self-serve. If anything goes wrong, email support@photizon.com and we'll move you at your next renewal.
Is there a free trial of Plus?
Yes, and it does not turn into a subscription: there is no card at any point. You get Plus for a set window, and the end date is shown before you start and on your account page while the trial runs. Nothing you saved is removed when it ends — it stays open, exportable and usable, exactly as it does after canceling, and saving and editing resume if you subscribe. One trial per account.
Is there a free trial of a Pro product?
Yes, on Pro products that offer one, and it does not turn into a subscription: there is no card at any point. You get a set number of runs inside a set window, and both are shown in the tool while the trial is live. A run is one accepted job — an optimization, a tolerancing study, an analysis you submit. Building a design, importing a file and reading a result you already have do not count against it, and a run lost to a failure on our side is put back. While the trial is live it includes Plus, so your design is still there next session. One trial per product, per account.
Will the price go up?
We may change the list price later. If we do, it doesn't affect a term you've already paid for, and you'd get advance notice with instructions on how to cancel before any higher renewal charge. There's no introductory rate here that quietly steps up — the prices on this page are the actual prices.
Do I need an account to use the tools?
No. Every simulator runs without signing in, with every physical parameter, the core material presets and the whole materials catalog to browse; Academy tutorials and per-tool manuals are open to everyone, and you can share any setup by link. A free account adds the full materials database searchable inside a tool, every numerical-fidelity and non-ideality control, every analysis tab and readout, and CSV export. Plus is only about keeping your work — exporting publication-ready figures of it, and bringing your own measured data and STL geometry into a trace.
Do you store what I simulate?
Not the simulation itself — solves are computed and handed back, not written to our database, whether or not you're signed in. Three things are stored, each because of something you did: designs and materials you save (including each design's version history and its auto-saved backup of unsaved edits), the inputs and results of a long-running Pro job so we can hand you the result, and the design behind each file you export while signed in, which we keep as a usage record. Deleting your account deletes all three. The Privacy Policy has the specifics.
Can I get an invoice for my grant or department?
Yes — invoice history is in the Stripe portal, linked from your account page. Prices exclude any applicable tax.
What about the other big solvers — FDE, RCWA-2D, EME?
Those are sold the same way — separately, per domain, as each one is validated. Thin-Film Pro, Ray-Optics Design Pro and Illumination Analyzer Pro are the first three; their prices are on this page. For the rest, we publish a price on the day a tool goes on sale, not before.