murmur vs SignPrep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
murmur
Practice phone calls with realistic AI to overcome anxiety and improve communication skills. Rehearse conversations for various scenarios like booking appointments, customer service, or job interviews in a private, judgment-free environment.
- Realistic AI mock calls
- Conversation roleplay
- Interview preparation
- Customizable scenarios
- Privacy-focused design
- Communication skill improvement
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Murmur is a private way to practice phone calls with realistic AI. If you hate calling doctors, offices, customer service, landlords, recruiters, or anyone you don't know, you're in the right place. A lot of us grew up texting everything. So when it's time to actually make a call, the brain just goes blank. Murmur lets you run the whole conversation first - you talk out loud, the AI talks back, and you rehearse the exact call you're scared to make. Most AI voices read at you. Murmur's coach speaks - intonation, pauses, and tone that shifts with the conversation. WHAT YOU CAN PRACTICE - Mock interviews with follow-up questions - Asking about a job application - Calling a doctor or clinic - Booking appointments - Talking to your landlord - Handling customer service - Returns, refunds, awkward conversations - Any scenario you write yourself FEATURES - A coach that sounds human - intonation, pauses, and emotion - 40+ scenarios across many categories, and you can write your own - 3 difficulty levels with different personalities and tones - Notes after every call - what worked, what to try next time - Rehearse in French, Spanish, German, and more - the coach picks up your language and switches with you - Breathing exercises to settle yourself before the real call - Your voice is never recorded or stored - streamed live during the call WHY IT HELPS Most phone anxiety comes from not knowing what the other person will say. Murmur lets you hear it ahead of time. Practice until the call stops feeling like a big deal. SUBSCRIPTION Try Murmur free. Upgrade for unlimited calls, interview prep, and advanced roleplay options.
SignPrep
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SignPrep supports sign language interpreters before, during, and after each assignment. It helps you prepare, time your swaps, write reflections, track CPD, and look after your wellbeing. ASSIGNMENTS Import assignments from work calendars or add them manually. See countdowns, locations, directions, preparation progress, notes, and AI briefings in one place. PREPARATION Prepare with editable checklists, research tools, key terms, glossary suggestions, notes, resources, and web searches you check before they open. AI BRIEFINGS Get a two-sentence briefing for any upcoming or ongoing assignment, covering its subject matter and the terminology to expect. ONGOING ASSIGNMENT Live Session shows progress, the active interpreter, next swap, and time remaining. Ambient Mode gives a full-screen view for coordinating swaps. SWAP TIMER & SWAP CLOCK Use Swap Timer for set intervals or Swap Clock for flexible turn-taking. Swap Timer's pause, resume, swap, and stop work the same way from the app, Apple Watch, the Lock Screen, and Siri; Swap Clock runs from the app and Siri. APPLE WATCH View assignments and control swap timing on your wrist. Complications and Smart Stack cards show what is next or ongoing, CPD hours, and signs due for review. WIDGETS, LIVE ACTIVITIES & CONTROLS Widgets show upcoming assignments, CPD progress, a Featured Sign, and how many signs are due for review. Live Activities keep timing on the Lock Screen, and Control Centre buttons start a session or open the swap timer. SIRI & SHORTCUTS Ask Siri to find or show a sign, check your assignments, run the swap timer or swap clock, or log a reflection. You don't have to say phrases word for word, and you can use SignPrep actions in your own shortcuts. On iOS 27, Siri AI (Beta) can also search your glossary, add or move an assignment, and act on what you have open. Siri AI needs a compatible device, is not available in every language or region, and may have a waitlist. OPTIONAL AI Apple Intelligence generates briefings, research, glossary suggestions, and checklists. AI output supports, rather than replaces, your professional judgement. SIGN GLOSSARY Build a video library of signs in SgSL, ASL, BSL, Auslan, NZSL, and more. Record clips, tag entries, add other names for a sign, review in slow motion, and export or import your glossary. DC-S REFLECTIONS Use Demand Control Schema prompts for environmental, interpersonal, paralinguistic, and intrapersonal demands. Track streaks, flag entries for mentor discussion, and export as PDF or CSV. CPD TRACKING Log professional development hours by activity type, with suggested hours for RID and NRCPD. Set a target and renewal period, carry over extra hours if your scheme allows, and track progress in the app and on Apple Watch. SELF-CARE Log mood, fatigue, and cognitive load. View trends, follow guided breathing and interpreter-specific stretches, and get suggestions for recovery. PRIVACY & SECURITY Protect your data with App Lock, Face ID or Touch ID, protected app-switcher previews, an access log, and optional iCloud backup exclusion. App Lock also protects Siri, Shortcuts, device search, reminders, and the assignment, glossary and CPD widgets. Exports, shared signs and notes, and saved videos show what they keep and remove first. SignPrep has no account and keeps no copy of your data, which is stored on your devices. Some features can send what they need to a service, such as Apple's Private Cloud Compute for briefings and research on iOS 27, or the search engine you use in Safari for a web search you check. Privacy Preview in Settings shows what each feature can send. RESOURCES Explore an interactive NAD-RID Code of Professional Conduct (US), role cards for hearing clients, and links to interpreter and Deaf community organisations. ACCESSIBLE BY DESIGN Built with VoiceOver, Dynamic Type, high-contrast colours, Reduce Motion, large touch targets, and haptics. Designed for iOS 26 and iOS 27 with Liquid Glass.
Screenshots
Verdict
The clearest difference is update cadence: SignPrep at every 4 days against murmur's every 3 weeks. murmur's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. murmur sells 5 in-app purchases, starting at $6.99 per 7 days and SignPrep sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
murmur ships an update every 3 weeks, SignPrep every 4 days. Both last shipped on November 5, 2026.
| Parameter | murmur | SignPrep |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (32 ratings) — better | — |
| Positive reviews | 36.4% of reviews | — |
| Number of ratings | 32 — better | — |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 53 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Drobinin Limited | Daniel Yong (Singapore) |
In-app purchases
murmur
- Public Speaking Pro Weekly3 Days trial$6.997 Days
- Public Speaking Pro Weekly$6.997 Days
- Communication Skills Pro Monthly$14.991 Month
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- Communication Skills Pro Annual$79.991 Year
- Communication Skills Pro 12-Mo$119.991 Year
SignPrep
- Small Tip$1.99
- Kind Tip$4.99
- Generous Tip$9.99









