Pricing

No. Every simulator runs without signing in, so you can learn how its device works: the basic, ideal device with its physical parameters and its main result, 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 what you need for a real answer to your own case: variants and non-ideal effects such as curved couplers and interface roughness, more sweeps and analysis tabs, the full materials database searchable inside a tool, and CSV export. Plus is only about your work: keeping it, exporting publication-ready figures of it, and bringing your own measured data and STL geometry into a trace.

Yes. Every Pro product includes Plus: saved designs and their versions, your own materials and figure export, in every tool. You don't need to buy Plus as well.

The Pro product includes Plus, so after you subscribe, cancel Plus from your billing portal so you're not paying for storage twice. If the Pro product is Thin-Film Pro, email support@photizon.com and we'll refund the unused part of your Plus term.

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. After that you keep what you saved: 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 usable in simulations; you just can't create or edit them any more.

Annual costs less: Plus is $99 a year or $10 a month, so a year of monthly comes to $120. Each Pro product's page shows its two prices the same way. Monthly makes sense if you need it for one project. To switch, open the billing portal from your account page and pick the other plan. If anything goes wrong, email support@photizon.com and we'll move you at your next renewal.

Yes, within 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.

Trials are per product: Plus has one, and each Pro product's page says whether that product has one. No trial turns into a subscription, and there is no card at any point. A Plus trial gives you Plus for a set window; the end date is shown before you start and on your account page while it runs. A Pro trial gives you 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 a Pro trial is live it includes Plus, so your design is still there next session. When a trial ends, nothing you saved is removed: it stays open, exportable and usable, as it does after canceling, and saving and editing resume if you subscribe. One Plus trial per account, and at most one trial of each Pro product per account.

Yes. Invoice history is in the Stripe portal, linked from your account page. Prices exclude any applicable tax.

What you choose to keep, plus a record of each server run. A simulation is computed and handed back; nothing of it is kept unless you save it, except for runs on our servers, below. When a run happens on our servers, its result is held so it can be handed to you, and unsaved server results are deleted after 24 hours. What you save or import is stored and counts toward your storage: designs (with each design's version history and its auto-saved backup of unsaved edits), saved results, custom materials, imported meshes and imported optical data. It stays until you delete it; a design you move to the trash can be restored for at least 30 days and may be deleted after that. We also keep the inputs of each server run until you delete your account, and the design behind each file you export while signed in, as a usage record. Deleting your account deletes all of it. The Privacy Policy has the specifics.

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 we show are the actual prices.