Comparison

Watch Microphone vs BLE Sniffer

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

Head to head
About

Watch Microphone

Transform your Apple Watch into a powerful megaphone for making loud announcements. Amplify your voice by over 100% without needing your iPhone. Simply connect a Bluetooth speaker and start amplifying.

Highlights
  • Apple Watch as microphone
  • Bluetooth speaker connectivity
  • iPhone not required
  • Over 100% voice amplification
  • Complication shortcut support
Features
Read full description

Watch Microphone is an app that turns your Apple Watch into a microphone, allowing you to make announcements in a louder voice. Features -Can be used by directly connecting your Apple Watch to a Bluetooth speaker. -No iPhone required for the entire operation. -Volume can be amplified by over 100% beyond the standard gain. How to Use 1. Prepare your Apple Watch and a Bluetooth speaker. 2. Tap Settings on your Apple Watch. 3. From Settings, tap Bluetooth. 4. Select and connect your Bluetooth speaker. 5. Press the Start button in the Watch Mic app on your Apple Watch. 6. Recording will begin. *1 7. Press the Stop button, and the recording will play back automatically. *2 8. Repeat the recording and playback process as needed. *3 *1 Recordings overwrite each time, so there's no need to worry about increased storage consumption. *2 We recommend presetting the volume using the Music app or similar. *3 You can add a shortcut to your Apple Watch face (using the Complication feature).

About

BLE Sniffer

Features
Read full description

BLE Sniffer turns your iPhone into a passive Bluetooth Low Energy scanner. See the BLE devices broadcasting around you, log what they're advertising, and use a proximity radar to gauge how close they are — all without connecting to anything. Think of it as a "sniff raw" mode for the Bluetooth Low Energy spectrum: capture the advertisements in the air, filter nothing, analyze offline. Whether you're mapping the BLE devices in your own home, auditing your gear, or reverse-engineering your own hardware, BLE Sniffer shows you what's broadcasting nearby. WHAT IT DOES Live device scanning See a real-time list of the nearby BLE devices that are advertising — name, identifier, signal strength (RSSI), manufacturer, service UUIDs, advertisement count, and first/last-seen times. Sort by signal, activity, name, or recency. Device categorization (heuristic) A built-in lookup of the complete Bluetooth SIG manufacturer registry — 4,000+ vendor IDs — plus vendor and name heuristics attaches a visual badge to some devices to help you triage a long list — for example dev boards, smart-home gear, and devices whose manufacturer ID or advertised name matches known camera vendors. These are best-effort guesses based on what a device broadcasts, not confirmed identifications. Proximity radar & "Geiger" mode A radar view plots advertising devices on concentric rings by signal strength. Pick one device and switch to single-device mode: a big live RSSI readout with color-coded background plus audio and haptic feedback that speeds up as the signal gets stronger — walk around and home in on it like a metal detector. Sessions & baseline diffing Save a scan as a named session. Capture a baseline in one location, scan another, and diff the two — see which advertising devices appear in the new scan but not the baseline. A quick way to narrow a long list down to what changed. Full CSV export Export any session or live scan as CSV — one row per advertisement, with timestamps, identifiers, RSSI, manufacturer IDs, service UUIDs, TX power, and raw advertisement bytes. Share it anywhere via the system share sheet for offline analysis. Optional device inspection For devices you own, opt in to connect and browse the GATT service tree — read manufacturer, model, and firmware info and explore characteristics. Connections are always explicit and per-device; the app never auto-connects. PRIVACY-FIRST BY DESIGN • Passive by default — it listens, it doesn't transmit or pair • No ads, no in-app purchases, no subscriptions • No telemetry, no accounts, no cloud — your data stays on your device • Everything is logged locally and exported only when you choose GREAT FOR • Mapping and auditing the BLE devices broadcasting in your own home or office • Hardware hackers, makers, and security researchers • Anyone curious about the invisible radio traffic around them PERMISSIONS BLE Sniffer asks only for Bluetooth access, which it uses to listen for nearby device advertisements. It does not pair, transmit, or request your location. Each device appears under an app-scoped identifier assigned by iOS — no hardware addresses are exposed. NOTE BLE Sniffer is a passive observation tool for the Bluetooth Low Energy spectrum. It detects Bluetooth Low Energy advertisements only — it is not a hidden-camera or surveillance detector and cannot find devices that don't broadcast BLE (including many cameras, and anything using Bluetooth Classic, Wi-Fi, or cellular). RSSI indicates rough proximity (distance), not direction, and device categories are heuristic guesses, not guarantees. Please use it responsibly and legally.

Screenshots

Watch Microphone4 screens
BLE Sniffer4 screens

Verdict

The call

The clearest difference is price: BLE Sniffer at Free against Watch Microphone's $2.99. BLE Sniffer also leads on iOS requirement (16.4 vs 18.4). Watch Microphone's advantage is update cadence (every 5 days vs monthly) and device support (3 vs 1). On ads and in-app purchases 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

BLE Sniffer is free to download; Watch Microphone costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Watch Microphone ships an update every 5 days, BLE Sniffer monthly. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Watch Microphone versus BLE Sniffer: the parameters behind the verdict, then further details
ParameterWatch MicrophoneBLE Sniffer
Price$2.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—2 — better
Update frequencyEvery 5 days — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS18.416.4 — better
Further details — not scored
Size11 MB39 MB
Age rating4+4+
Developerkobunachou ozawaShibby Ventures LLC

In-app purchases

None

Watch Microphone

No in-app purchases

None

BLE Sniffer

No in-app purchases

Questions

Is Watch Microphone free?
Watch Microphone costs $2.99, with no in-app purchases.
Is BLE Sniffer free?
BLE Sniffer is free to download, with no in-app purchases.
Do Watch Microphone or BLE Sniffer have ads?
Neither Watch Microphone nor BLE Sniffer shows ads.
Which is updated more often, Watch Microphone or BLE Sniffer?
Watch Microphone ships an update every 5 days, and BLE Sniffer monthly. Most recently, Watch Microphone was updated on October 7, 2026 and BLE Sniffer on October 24, 2026.

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