Comparison

B vs SignPrep

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

B

Communicate with up to 7 devices simultaneously using only Bluetooth, ideal for areas with no internet or cellular service. Enjoy privacy-first messaging with smart background notifications and a dark mode option.

Highlights
  • Offline Bluetooth communication
  • Connect up to 7 devices
  • Airplane mode friendly
  • Privacy-focused messaging
  • Background notifications
  • Dark mode support
Features
Read full description

Stay connected even when there’s no internet or cellular service! B Chat lets you communicate with up to 7 devices simultaneously using just Bluetooth—perfect for airplanes, remote areas, hiking trips, or anywhere with limited connectivity. Key Features: * Airplane Mode Friendly
: Chat with friends during flights, even when seated rows apart. Perfect for long journeys when you want to stay in touch without WiFi charges. * 100% Offline Communication
: No internet required. No cellular data needed. No WiFi necessary. Just pure Bluetooth peer-to-peer messaging that works anywhere, anytime. * Privacy First
: Your conversations stay between you and your chat partners. No cloud storage, no message history on servers—complete privacy guaranteed. * Smart Background Notifications: 
Get notified when messages arrive, even when the app is in the background or your screen is locked. Stay connected without keeping your phone active. * Dark Mode
: Beautiful interface that adapts to your device’s appearance settings. Easy on the eyes, day or night. How It Works: 1. Turn on Bluetooth 2. Connect with nearby devices (up to 7 friends) 3. Start chatting instantly—no setup required Download now and never miss a message! Note: Bluetooth connections while the app is running in the background or when the display is off may be limited by iOS system power‑saving restrictions. Communication will automatically resume once the app is reopened or brought to the foreground.

About

SignPrep

Features
Read full description

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. SgSL users can turn on SgSL Sign Bank Sync to download the sign bank and its updates. Downloads use Wi-Fi unless you allow mobile data, and you see a preview before any signs are added. 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, Apple Watch, and the assignment and glossary widgets. Exports from Settings show what they keep and remove before you share them. Apart from Apple services such as Maps, SignPrep goes online only for optional SgSL Sign Bank Sync, which contacts signprep.app and sends no personal information. RESOURCES Explore an interactive Code of Professional Conduct, 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

B2 screens
SignPrep4 screens

Verdict

The call

The clearest difference is price: SignPrep at Free against B's $0.99. SignPrep also leads on update cadence (every 3 days vs every 4 months). B's advantage is iOS requirement (17.0 vs 26.0). On 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

CostPrice · In-app purchases · Ads · Monetization

SignPrep is free to download; B costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

B ships an update every 4 months, SignPrep every 3 days. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 7 level
B versus SignPrep: the parameters behind the verdict, then further details
ParameterBSignPrep
Price$0.99Free — better
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS17.0 — better26.0
Further details — not scored
Size4 MB42 MB
Age rating4+4+
DeveloperStanislav SvecDaniel Yong (Singapore)

In-app purchases

None

B

No in-app purchases

None

SignPrep

No in-app purchases

Questions

Is B free?
B costs $0.99, with no in-app purchases.
Is SignPrep free?
SignPrep is free to download, with no in-app purchases.
Do B or SignPrep have ads?
Neither B nor SignPrep shows ads.
Which is updated more often, B or SignPrep?
B ships an update every 4 months, and SignPrep every 3 days. Most recently, B was updated on October 11, 2026 and SignPrep on October 3, 2026.

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