Wavista Apps

Partcadabra Terms of Use

Partcadabra: 3D Print Fixes ยท Effective date: October 7, 2026

1. About these terms

These terms apply to Partcadabra, an iPhone app published by Wavista Apps ("we", "us"). Wavista Apps is operated by William Tsao, an individual based in California, USA. By downloading or using Partcadabra, you agree to these terms. If you do not agree, do not use the app.

If you are under 18, you may use Partcadabra only with your parent's or guardian's permission. Where the law requires it, the App Store asks for that permission.

2. Apple's standard license

Partcadabra is licensed to you under Apple's standard Licensed Application End User License Agreement (the "Apple EULA"). These terms add to the Apple EULA. If the two conflict, the Apple EULA controls your license to use the app. Apple is not a party to these terms and is not responsible for the app or its content.

3. Partcadabra Pro and part credits

  • Sold through Apple. Building a part or a phone case needs Partcadabra Pro, an auto-renewing subscription (monthly, or yearly with a free trial for new subscribers), or a part credit, a one-time purchase. Both are sold through Apple's App Store. The purchase screen shows the price, how often it renews and any free trial before you buy. Prices can differ by country.
  • Payment. Payment is charged to your Apple Account when you confirm the purchase or, if you start with a free trial, when the trial ends.
  • Automatic renewal. Pro renews automatically for the same length at the then-current price unless you turn off auto-renew at least 24 hours before the end of the current period. Your Apple Account is charged for the renewal within the 24 hours before the current period ends.
  • Free trial. The free trial, when offered, is for new subscribers. If you do not cancel at least 24 hours before the trial ends, it becomes a paid subscription. Any unused part of a free trial ends when you buy a subscription.
  • Managing and cancelling. Manage or cancel in your iPhone's Settings: tap your name, then Subscriptions, or tap Manage subscription in the app's Settings. Cancelling stops the next renewal; you keep Pro until the end of the period you paid for. Deleting the app does not cancel the subscription. Your subscription belongs to your Apple Account, so Restore purchases brings it back on a new iPhone or after a reinstall.
  • What Pro includes. Pro includes up to 30 builds each calendar month, counted in Coordinated Universal Time (UTC), so a new month starts at midnight UTC on its first day. During the free trial, Pro includes 3 builds in total. A part and a phone case each count as one build. Re-fits do not count. Builds you do not use in a month do not carry over. With Pro you can also read up to 20 part photos a day.
  • When Pro's builds run out. If you have used the builds Pro includes for the month (or for the trial), a part credit you bought pays for the next build. If you have none, you can buy one part, or wait: Pro's builds start again on the first day of the next month, and after a free trial, when it turns into a paid subscription.
  • Part credits. One credit builds one part or one phone case, with or without Pro. Credits never expire. They have no cash value and cannot be transferred or exchanged.
  • What is free. A preview of your part with its size checks is free, up to 20 a day. Reading a part photo with AI is free 3 times a day, and up to 20 times a day while you have Pro or an unused credit. Your first 6 design chat messages are free; with Pro or an unused credit you can send up to 40 a day. One chat holds up to 30 messages.
  • When a build is paid for. A build uses one of Pro's builds, or a credit, when it starts. If the build fails and no part is made, it is given back (one of Pro's builds is given back only while its month is still running). A part that is built but fails one of its checks is not given back, because the free preview shows the same checks before you build.
  • Re-fits. After you print the test slice and tell the app it is too tight or too loose, you can re-fit that part for free up to 2 times.
  • Phone case designs. Drawing designs for a phone case uses no build or credit, but needs Pro or at least one unused credit. Everyone can draw up to 3 sets of designs a day and 20 sets a calendar month (UTC).
  • Where credits are kept. Partcadabra has no account. Your credits belong to the random, anonymous ID the app makes on your iPhone, not to your Apple Account. If you delete the app, your unused credits are not restored, and moving to a new iPhone may not keep them either. Delete my data keeps your unused credits and your subscription; credits already used are not given back.
  • Refunds. Apple handles all payments and refunds under its own policies. Request a refund at reportaproblem.apple.com. We cannot issue refunds directly.
  • Limits. Features that use our server have limits per person, so the service stays fast and affordable for everyone. The app tells you when you reach one.
  • Pause after repeated blocked requests. If you ask for parts Partcadabra does not make (section 4) 3 times within 30 days, Partcadabra's photo reads, design chats, case designs, previews and builds pause for your iPhone for 30 days from the last of those requests. A photo of a person is refused but does not count. During a pause your unused credits are kept, and they work again when it ends. A pause does not cancel or pause a Pro subscription: it keeps renewing unless you cancel it as described above. Parts you already paid for can still be downloaded. If you think a pause is a mistake, contact support from the app.

4. Acceptable use, and parts Partcadabra does not make

Partcadabra does not make, and you agree not to use Partcadabra or any file it makes for:

  • firearms or any firearm part or accessory, magazines, suppressors, solvent traps, auto sears or switches;
  • knives and blades, brass knuckles, lock-picking tools or handcuff-bypass tools;
  • vehicle brakes, steering or seat belts;
  • child seats, cribs or strollers;
  • helmets or other protective gear;
  • anything for climbing, lifting or overhead loads;
  • gas, fuel or pressure fittings;
  • enclosures or parts for mains-voltage electrics;
  • medical devices or prosthetics;
  • named characters, franchises or logos.

This applies even when the app does not stop a request. Partcadabra also does not use photos where a person is the subject, or designs that show a real person.

You also agree not to:

  • try to get around these limits, for example by rewording a request or splitting a blocked part into pieces;
  • add photos or text that you do not have the right to use, or use Partcadabra to copy a design that someone else has the rights to;
  • use the app to break the law, to harm, harass or deceive anyone, or to make or share illegal content;
  • try to get around Pro's limits, credits, daily limits or other safeguards, or send requests to our server other than through the app;
  • copy, reverse engineer or interfere with the app or our server, except where the law allows it.

We may stop providing the service to anyone who breaks these rules.

5. Your content and your files

You keep all rights to the photos, numbers and text you add. You let us use them only to provide the feature you asked for, as described in Partcadabra's privacy policy (for example, sending a part photo to OpenAI to suggest a part type, or your design chat messages to OpenAI's AI designer). As far as we are concerned, the part files Partcadabra makes for you are yours to use for any lawful purpose. Your files are saved on your iPhone; our server keeps them for about 2 days so your iPhone can download them.

6. AI suggestions and designs can be wrong

Partcadabra uses AI (OpenAI) to suggest a part type and rough sizes from your photo, to design parts in a design chat, to check what you write, and to draw case designs. AI can be wrong, even when it sounds sure. The sizes that have to fit always come from numbers: the ones you enter or write in a chat, or for a phone case the phone model you pick, never from a photo. In a design chat, the app lists each size it checked with the number it used; check that each one matches what you measured. Check every suggestion and design before you build.

7. Printed parts

How Partcadabra makes a part

Partcadabra fills a part template with the numbers you measured, plus a clearance for your filament and the calibration from your test slice answers. It then measures each size that has to fit on the finished 3D file and checks that the file is a closed solid in one piece, has walls your nozzle can print and fits your printer's bed. The part files are made from your measurements, and you print them on your own printer.

In a design chat, an AI designer makes the part from what you describe instead of a template, with the same clearance and calibration. The app measures each size the designer was asked to check and runs the same printing checks. The designer can misunderstand what you meant, so look at the pictures and the size list before you build.

Partcadabra checks sizes, not strength or safety

Partcadabra does not check how strong a part is, how much weight it holds, how it handles heat, how long it lasts, or whether it is safe for what you use it for. How a printed part turns out depends on your printer, filament, settings and how you print it, which Partcadabra cannot see. A part that passes every check can still break, bend or not fit.

You print, test and decide

You are responsible for printing the part, testing it and deciding whether it is right for its use. Print the test slice first. Before you rely on a part, check it for cracks, gaps between layers and a good fit, and load it gently at first. Follow your printer and filament makers' safety instructions: printers get hot, and some filaments give off fumes.

Parts that hold weight

Brackets, hooks and shelf pegs are for light loads only. Never use a printed part overhead, or for anything that keeps someone safe, such as climbing, lifting, a vehicle or a child's gear. If a part will get warm, such as in a car, a sunny window or near a heater, print it in PETG or ABS, because PLA can soften and bend.

Phone cases

A case is sized from the phone maker's published dimensions for the model you pick. Check that it fits your phone before you rely on it. A printed case may not protect your phone from drops, water or scratches. Partcadabra is not made, endorsed or supported by Apple. iPhone is a trademark of Apple Inc., used only to say which phones a case is for.

8. Other companies' services

Partcadabra relies on services from other companies, such as Apple (the App Store, payments and subscriptions) and OpenAI (cloud AI). Their own terms apply to their services, and we are not responsible for them.

9. Changes to the app

We may add, change or remove features, part types or phone models, or stop offering the app. Features that use our server need an internet connection and may sometimes be unavailable.

10. No warranty

To the extent the law allows, Partcadabra, its part files and its checks are provided "as is" and "as available", without warranties of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, accuracy and non-infringement. We do not sell or make printed parts, and we do not promise that a part made from Partcadabra's files will fit, hold a load or be safe for any use, or that the app will be error-free or uninterrupted. Some places do not allow these exclusions, so some of them may not apply to you.

11. Limitation of liability

To the extent the law allows, we are not liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of profits, revenue, data or goodwill, arising from your use of, or inability to use, Partcadabra, its files or any part printed from them. To the extent the law allows, our total liability for all claims relating to Partcadabra is limited to the greater of the amount you paid us through the App Store in the 12 months before the claim and US$50.

Nothing in these terms limits or excludes our liability for fraud, for willful injury, for gross negligence, for breaking the law, or for death or personal injury where the law does not allow it to be limited, and nothing in these terms takes away rights you have as a consumer that the law does not allow to be waived.

12. Changes to these terms

We may update these terms. We will post the new version on this page with a new effective date, and for important changes we will also tell you in the app or on this page before they take effect. If you keep using Partcadabra after the changes take effect, you accept the new terms.

13. Governing law

These terms are governed by the laws of the State of California, USA, without regard to its conflict of laws rules. Any dispute will be decided in the state or federal courts located in Los Angeles County, California, unless the law where you live gives you the right to bring it in your local courts. If a court finds part of these terms unenforceable, the rest stays in effect, and that part applies as far as the law allows.

14. Contact

Questions about these terms: support@wavistaapp.com.

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