Build your own sign language glossary in SignPrep

SignPrep is a free app for sign language interpreters, on iPhone, iPad, and Apple Watch. Record a sign on your iPhone or choose a video from your library, name it, and let Apple Intelligence suggest the definition, word type, and domain. It works for interpreters of any sign language.

How do I add a sign?

On the Glossary tab, tap + to open New Sign. Record video with your camera, or import from your Photo Library. SignPrep asks for camera access only and records no audio; audio is stripped from imported videos.

Each entry has a label, description, word type, domain tag, language tag, source, and draft or confirmed status. Synonyms let Siri and glossary search find a sign by its other names too.

SignPrep New Sign screen for adding a glossary entry, with AI-suggested definitions and word types
Add a sign with AI-suggested definitions, word types, and domain tags.

What can AI suggest?

On Apple Intelligence devices, on your device: Look Up Definitions, Suggest Related Words, Topic Suggestions, and Domain Auto-Suggestion. Suggestions From Recent Assignments offers terms drawn, on your device, from your next assignment and your last three. They are not verified signs or authoritative terminology.

How do I keep signs fresh?

The Review sheet shows the signs due for review one card at a time, and says why each sign is there: pinned, missed, due, low confidence, assignment match, or selected. Pinned signs come first, then missed ones. Terms you capture during an assignment land in the Review Inbox. More on the Glossary.

Can I share or move my glossary?

Yes, as a .signprep file. Export packages every entry, with its videos, into a single file; import accepts .signprep and .zip files. A glossary file can hold up to 20,000 files inside it (each video and picture counts as one). More on import and export.

Frequently asked questions

How do I record a sign?

Glossary tab › + button opens New Sign. Grant camera access the first time; SignPrep records video only, does not ask for the microphone, and strips the audio from videos you import from Photos. Record a short video, then fill in the label, description, word type, domain, and sign language. AI can suggest definitions and related words based on the label you enter. Tap Save to add the entry. You can also say “Add a new sign in SignPrep” to Siri.

Can I export or import my glossary?

Settings › Glossary › Export Glossary packages every entry (and its video, with audio stripped) into a single .signprep file that you can AirDrop, email, or save to iCloud Drive, after showing you what the file keeps and removes. Import Glossary (.signprep) on the same page accepts .signprep and .zip files, and re-importing a pack updates the entries you already have from it instead of duplicating them. Ideal for moving between devices or sharing a starter set with colleagues. Importing waits until SignPrep is unlocked if App Lock is on.

What are Synonyms?

Other names for a sign: lay and clinical variants, alternate spellings, and paraphrases. Add them in the Synonyms section of the New Sign or Edit Sign screen, where SignPrep also suggests some from the sign’s translations. Siri and glossary search then find the sign by those names too. Synonyms travel with your glossary when you export and import it.

Is my data private?

Your SignPrep data is stored on your devices: there is no account, and SignPrep keeps no copy of it. Some features can send what they need to a service such as Apple or Google, and the privacy policy lists each one and what it sends.

More answers are on the Support page.

Ready to be prepared for every assignment?

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Describes SignPrep v1.6.2