Tinkerhall

The short version

Tinkerhall has no account, no advertising, no tracking and no analytics. The one thing you can send is a model request, and only when you tap Send or add a vote; see Request a model below.

What the app does on your device

All the models, pictures and facts are inside the app and are drawn on your device. The app shows no ads or third-party content. It uses the network for Request a model, described below, and for the App Store to check and complete a Pro purchase.

What stays on your device

• Your favourite models.
• Your Inventor Passport counts: models explored, tours finished, blueprints drafted.
• Your appearance choice (System, Light or Dark) for the current session.

This is stored in the app's own settings on your device. Deleting the app deletes it.

Request a model

In Request a model the app loads a short list that the developer writes (model names and short descriptions, with vote counts). If you add a vote, the app sends which list item you chose. If you send a request, the app sends the name you typed, the audience you chose and the optional reason you wrote. That is all: no account, no device ID, no name, no email address and no location. The form asks you not to write personal details, and the app and server refuse text that looks like an email address, a web link or a phone number.

• Only the developer reads requests. They are not shown to other people and are deleted after 90 days.
• The server does not store your network address. As with any website, the hosting provider (Cloudflare) sees the address while it delivers your request, and it is used only to limit how often one connection can send.
• Your device remembers when you last sent a request and which list items you voted for, so it can pause repeat requests and show your votes. That stays on your device.
• If you never open Request a model, the app sends nothing.

Tinkerhall Pro purchase

Tinkerhall Pro is bought through the App Store. Apple takes the payment and handles it under its own terms; Tinkerhall never sees your card, name or email. The app only asks the App Store whether this Apple ID owns Pro, so it can unlock the models, and it remembers the last answer on your device. There is no account and nothing about your purchase is sent to the developer.

Blueprints and sharing

A Blueprint is made on your device. When you copy it, save it or share it, it goes only where you choose, using the system's own copy, file or share sheet. Tinkerhall does not see where it goes and asks for no access to your photos.

Permissions

Tinkerhall asks for none: no location, camera, microphone, contacts, photos or tracking.

Children

Tinkerhall is written for curious teens and adults and does not ask for personal information from anyone, including children. Requests are anonymous and ask people not to include personal details. There are no ads or accounts, and no links that lead out of the app other than the ones you choose in Settings (rating the app, emailing the developer and the Tinkerhall website). Parents and guardians can write to us to ask about anything a child may have sent.

Changes and contact

If this policy ever changes, the new version will be posted on this page with the date. Questions: support@khangazun.com.

Last updated: 30 October 2026 (Request a model added).