Privacy

Updated October 19, 2026.

In the app

Hiero Pro stores saved conversions, quiz results and practice progress on your device. If iCloud is available, the app can sync this content through your private Apple iCloud database. D7mtg does not operate a server that receives your saved content.

The app has no advertising or analytics SDK. It does not require a separate Hiero Pro account.

Content updates

Hiero Pro checks for text corrections and Learning Center updates from our content service hosted by Vercel. It can also download lesson images. These requests identify the app and the requested file. They do not include your answers, saved conversions or keyboard input.

Vercel receives and retains technical request information, including your IP address, to serve content, maintain service reliability and protect against abuse. This information is not used for advertising tracking. Downloaded content is cached on your device. Bundled lessons and previously saved content remain available when an update cannot be downloaded.

Game Center

If you choose to sign in to Game Center, the app reports achievement identifiers and completion percentages to Apple through GameKit. You can practice without signing in. The app does not request your Game Center friends list or send achievement progress to a D7mtg server. Apple describes its use of gameplay and account information in Game Center & Privacy.

Keyboard and sharing

The keyboard inserts the signs or codes you select into the active text field. It does not require Full Access. Copy actions use your system clipboard. When you share content, you choose the receiving app.

On this website

The sign search, converter and quiz run in your browser. Practice stores completed rounds and answers locally so you can see your history and review missed exercises. The single-consonant drill stores missed signs locally. The converter keeps your draft locally. No analytics script is included. Our hosting provider can process standard request information, such as IP addresses and browser details, to serve and protect the site.

You can clear locally stored quiz and converter data in your browser’s site-data settings. External links follow the destination site’s privacy policy.

Contact

If you email support, we receive the information you include so we can reply. Contact yitzchok@d7mtg.com with privacy questions.