Comparison

BLE Sniffer vs Random String Maker

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

Head to head
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.

About

Random String Maker

Features
Read full description

"Random String Maker" is a simple yet powerful utility app designed to quickly generate secure passwords, tokens, and test data. Featuring a sleek, it offers an incredibly smooth and stylish user experience. [Key Features] ・Customizable Types: Easily toggle between Uppercase, Lowercase, Numbers, and Symbols. ・Intuitive Slider: Swiftly adjust the string length (from 1 to 100 characters). ・One-Tap Copy: Simply tap the generated text box to copy it to your clipboard. ・Smart Memory: Automatically saves your character and length settings for your next launch.

Screenshots

BLE Sniffer4 screens
Random String Maker3 screens

Verdict

The call

The clearest difference is in-app purchases: BLE Sniffer at none against Random String Maker's 2. BLE Sniffer also leads on ads (none vs shown). On price, device support and iOS requirement 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

Both are free to download. Random String Maker sells 2 one-off in-app purchases. BLE Sniffer asks for nothing beyond the download.

Scorecard2 real differences · 4 level
BLE Sniffer versus Random String Maker: the parameters behind the verdict, then further details
ParameterBLE SnifferRandom String Maker
PriceFreeFree
Update frequencyMonthly—
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhoneiPhone
Requires iOS16.4 — better16.6
Further details — not scored
Size39 MB4 MB
Age rating4+4+
DeveloperShibby Ventures LLCShota Yamada

In-app purchases

None

BLE Sniffer

No in-app purchases

2 purchases

Random String Maker

One-time2
  • Buy Me a Coffee☕️$1.99
  • Remove Ads$2.99

Questions

Is BLE Sniffer free?
BLE Sniffer is free to download, with no in-app purchases.
Is Random String Maker free?
Random String Maker is free to download, with in-app purchases available.
Do BLE Sniffer or Random String Maker have ads?
Random String Maker shows ads; BLE Sniffer does not.

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