Prepare, interpret, reflect, and recover — all on-device.
SignPrep is the only companion app with a true interpreter swap timer and a personal video sign glossary — plus assignment prep, CPD tracking, and reflection. Everything runs privately on your device, so the people you interpret for stay private to you alone.
One app, not five
Most interpreters stitch together a handful of generic tools to get through the day. SignPrep replaces that stack with one app built around how interpreting actually works.
The usual stack
SignPrep
Prep, swap timing, glossary, CPD, and reflection — in one app, entirely on your device.
Free. No account. Nothing sent to any server.
A day, prepared
SignPrep recognises the domain, builds a preparation checklist, and an hour out an on-device briefing helps you orient to the topic and flags areas to review — built from the job type, not patient details. One tap opens directions.
Open Ongoing Assignment, start Swap Timer, and set the phone down in Ambient Mode. The countdown stays readable across the room and pulses when it is time to swap.
Capture a DC-S reflection while it is fresh, then log your CPD hours in a tap. SignPrep tracks your renewal pace and reminds you before the deadline.
Your glossary grows, your reflection streak holds, and a monthly narrative surfaces patterns across mood, demands, and assignments — all kept to yourself.
Free. Private. Professional. On iPhone, iPad, and Apple Watch — no account, no sign-up, nothing sent to SignPrep or any server.
Why SignPrep
SignPrep is built around how interpreting actually works — by a practising interpreter, not a software company. There is no account to create, no subscription, no ads, and nothing is sent to SignPrep or any server. You own everything, and it works the moment you open it. Built in Singapore, and built for sign language interpreters everywhere.
By a practising interpreter, not a software company.
Before, during & after every assignment
Built as the all-in-one interpreter app, SignPrep gives sign language interpreters the tools to prepare for every assignment, reflect on their practice, and take care of their well-being — end to end. See the full list of features for sign language interpreters.
Assignments
Import from your work calendars with smart filtering, or add your own jobs with a Calendar-style editor. Each assignment shows a live countdown, one-tap directions, and a preparation checklist generated by on-device AI based on the domain, title, and location.
AI Preparation
Walk in already oriented to the topic. Open a job and SignPrep gives you a clear briefing to help you orient, plus a checklist you can tick off — with suggested topics to research and terms to review for each assignment. It all runs locally using Apple Intelligence, so nothing is sent to SignPrep or any server.
AI suggestions are a starting point for your own prep, not a verified glossary. They can be incomplete or wrong, so always do your own preparation and confirm terminology against sources you trust.
AI suggestions are generated on-device and may be incomplete or inaccurate. Always do your own preparation.
Swap Timer & Swap Clock First of its kind
Never lose track of whose turn it is. Swap Timer cycles through Running, Swap Soon, and Swap Now with haptic cues, while Swap Clock follows the real clock when a fixed interval doesn't fit. Both support A/B interpreter roles and an Ambient Mode you can set down and read at a glance during live sessions.
And more
A personal video sign glossary — a first for interpreters. Build a searchable video library of your signs — record clips, tag by domain and sign language, review in slow motion, share as visual cards, or export your collection. AI suggests related words you may not have thought to record. See the glossary.
Reflect with the Demand-Control Schema. Structured prompts walk you through environmental, interpersonal, paralinguistic, and intrapersonal demands, an interactive quiz sharpens your eye for categories, and you can flag entries for mentor discussion. See reflections.
Log Continuing Professional Development (counted as CEUs in the US) by activity type, with country-specific defaults for RID, NRCPD, and NAATI. Set your target and renewal period; SignPrep tracks your pace and alerts you within 30 days of renewal. Export as PDF or CSV.
Log mood daily and visualise trends. Track fatigue and cognitive load with colour-coded check-ins, follow guided breathing and interpreter-specific stretches, with AI suggestions drawn from your reflection history.
View assignments and the swap timer on your wrist, with four complication families and Smart Stack cards that surface what's next. Start or control the timer from either device — they stay in sync.
Home and Lock Screen widgets show greetings, upcoming assignments, CPD progress, and countdown gauges. One-tap New Sign, Reflect, and Log CPD shortcuts, plus Control Centre controls.
Ask "What's my next assignment?", "What's my day like?", or "What's my swap timer status?". Start, pause, and stop the timer by voice. Log CPD, add a sign, or capture a reflection hands-free.
An interactive Code of Professional Conduct with seven tenets and real-world examples, customisable role cards for hearing clients, and region-specific links to your national association and Deaf community organisations.
Stay ahead without thinking about it. Get a pre-assignment reminder before you leave, a reflection nudge after the job ends, and CPD renewal alerts as your deadline approaches — each one deep-links straight to the right screen, and every type has its own toggle.
New in v1.5
SignPrep v1.5 brings the app closer to the way interpreters actually work during an assignment. Open the Ongoing Assignment page, choose the timing style that fits the session, and set the phone down in Ambient Mode so the swap timer stays readable at a glance.
A dedicated full-screen page designed to stay useful throughout an assignment. See what is happening now, how much time is left, and which timing tool is active.
A set-it-down view for live sessions. Rest the phone nearby and read the swap timer at a glance — large text stays legible from a distance, and the colours pulse when it is time to swap, so you never reach for the screen mid-assignment.
Use Swap Timer for structured intervals, or Swap Clock when turn-taking needs to follow the real clock. Both support A/B interpreter roles and a consistent live-session experience.
For interpreters, confidentiality is the first tenet of the Code of Professional Conduct — not a setting. On-device AI is the only design that honours it: your assignment data is read only from your own calendar, and every briefing, research prompt, and glossary suggestion is generated on your device by Apple Intelligence. Nothing is ever sent to SignPrep or any server, so the people you interpret for stay private to you alone. No PHI required, fully on-device.
VoiceOver works on every screen, widget, Live Activity, and Watch complication, with Dynamic Type, high-contrast colours, and haptic feedback throughout. Spotlight indexes your glossary and assignments — all without anything being sent to SignPrep or any server. Read the full privacy commitment.
Free on iPhone, iPad, and Apple Watch. No account, no sign-up, nothing sent to SignPrep or any server.
Yes. Your data stays on your device and the AI runs locally with Apple Intelligence, using Apple's on-device Foundation Models — nothing is sent to SignPrep or any server. See the HIPAA question below for US interpreters.
SignPrep uses Apple's on-device Foundation Model, the same general-purpose model behind Apple Intelligence. It's good at organising and summarising the information you give it, but it is not a medical, legal, or specialist knowledge base, and like all language models it can be incomplete or wrong. Treat briefings, suggested topics, and terms as a prompt for your own preparation, always verify against trusted sources and your own glossary, and never rely on them as a final reference. SignPrep does not use a separate specialist model.
SignPrep is a personal preparation tool for interpreters. It is not a covered entity or a business associate, and it does not require any protected health information (PHI) to do its job. All AI processing happens on your device — nothing is transmitted to SignPrep or any AI server. We recommend keeping patient or client details out of your calendars and out of the app; SignPrep works from the job type, not patient data. Note that consumer Apple or Google calendars are not HIPAA-compliant unless they are part of a specially configured healthcare workplace account. This is general information, not legal advice.
SignPrep is compatible with all iPhone models running iOS 26 or later, iPad models running iPadOS 26 or later, and Apple Watch models running watchOS 26 or later. For a full list of supported devices, please visit Apple's support pages for iPhone, iPad, and Apple Watch.
SignPrep works for interpreters of any sign language. You can tag each sign by domain and language.
Yes. CPD (Continuing Professional Development, counted as CEUs in the US) has country-specific defaults for RID, NRCPD, and NAATI, with target and renewal tracking. You can also turn CPD off if it isn't part of your practice.
Yes. Reflections and CPD logs export as PDF or CSV with date-range filtering.
Always improving
A new focus on privacy and security.
See all release notes on the What’s new page, or the full version history on the App Store.
Thank you to every sign language interpreter who uses SignPrep — your work inspires this app, and your practice shapes it. SignPrep gets better because of the interpreters who share what they need. If you have feedback, a feature idea, or something that would make your assignments easier, I'd genuinely love to hear it — I read every message.
And if SignPrep has changed how you prep, swap, or reflect, I'd love to hear your story — with your permission, it may help other interpreters discover the app.
Or email [email protected]