Blue Box vs Bluetooth Sleuth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blue Box
Encode and decode DTMF signals using your device's microphone or keypad. Play back tone sequences with adjustable settings, and save them for easy recall. Explore various tone systems, including trunk control and coin signals, for educational and utility purposes.
- Encode/decode DTMF signals
- Adjustable tone, delay, and volume
- US, UK, and European tone systems
- Multi-frequency and trunk control tones
- Coin tone sequences (Red Box mode)
- Custom tone creation
- Save and organize sequences
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Blue Box is utility for encoding and decoding DTMF (Dual-Tone Multi-Frequency) or Touch Tone signals. Generate tones by using the phone style keypad or decipher tones using the device’s microphone. Tone combinations can be played back with adjustable tone, delay and pause lengths and volume. Choose from US, UK and Europe based systems. Enable Multi-frequency tones, which were a precursor to DTMF. Additional trunk control signals will be available including KP, ST1, ST2, ST3, KP/ST2. Additional tones include the Dial Tone, Ring Back Tone, Busy Signal and 2600Hz. A comma can be used as a pause character to provide extra time between tones during playback. Save and organize any number of sequences for easy recall using the Favorites feature. Choose numbers from your contacts to display and play back tones. Share an encoded or decoded number with the Phone, FaceTime or Messages app. Use Red Box mode to play coin tone sequences, including 5¢, 10¢ and 25¢ for the US system and 10p and 50p for European systems. Create a custom tone with control over individual frequencies and volumes. The custom tone can consist of any number of on and off pulses and can optionally be continuous. Record interactions with the encoder and play them back with the same timing. The recording feature works with all tones, including the dial tone, busy signal, ring back tone, 2600Hz and coins and trunk control tones. A help manual is including, with step-by-step instructions for all features. When the app is first run, pop-ups will be displayed indicating what the controls are used for. Warning: Blue Box is designed as an educational tool and utility. Do not attempt to use Blue for any illegal or malicious purposes. Blue Box can be used to assist in dialing numbers, but can not be used to manipulate digital telephone utility services. Limitations: Blue Box is software based decoding and is processor intensive. Performance may vary between devices. Tones that are less than 100 ms with pauses that are less than 100 ms are difficult to process in software. Future versions and processors may increase the reliability of faster tone sequences. If you need touch tone decoding for higher speeds, a hardware solution is recommended. Blue Box can not play tones into the iPhone phone feature while in a call. Blue Box is useful for entering numbers into touch tone operated systems such as an answering machine passcode or a dial-up service that requires the entering of several touch tones to navigate a menu system. Simply enter the numbers once and then play back the numbers into the phone's microphone with a touch.
Bluetooth Sleuth
This utility allows users to deeply interact with their device's Bluetooth capabilities. It supports scanning for peripherals, advertising custom services, broadcasting and ranging iBeacons, and searching a comprehensive Bluetooth database.
- Configure custom Bluetooth advertisements
- Scan for specific or all advertising devices
- Connect to and browse peripheral services
- Broadcast and range iBeacons
- Search Bluetooth assigned numbers database
- Monitor RSSI values with graphing
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Bluetooth Sleuth is meant to be a well rounded app for interacting with your iOS or supported macOS device's Bluetooth functionality. This includes advertising and scanning for peripherals, as well as broadcasting, monitoring, and ranging iBeacons. The following covers some of the features included in Bluetooth Sleuth: [ADVERTISE] - Ability to configure an advertisement with your device - Create custom services, with their own characteristics and descriptors to advertise - Automatically saves custom services for later reuse [SCAN] - Ability to scan for all advertising devices within range - Ability to scan for specific advertisements that contain the provided CoreBluetooth UUID - Displays all peripherals, sorted by RSSI, with the ability to connect to devices that are open to connections - Browse a peripheral's services, characteristics, and descriptors - Monitor recent peripheral RSSI values with included graphing tools - Ability to automatically reconnect to a previously connected peripheral - Filter results to require names, ability to connect or minimum RSSI value [SEARCH] - Search through over 5,000 records in the Bluetooth database of assigned numbers for companies, services, characteristics and other related values [BROADCAST] - Configure your device to act as an iBeacon by providing it with a UUID, and optional major and minor values [RANGE] - Observe for the presence of any iBeacons broadcasting with the values you provide - See device information for any iBeacons located - Monitor recent iBeacon RSSI values with included graphing tools [MONITOR] - Observe region updates for any iBeacons broadcasting with the values you provide
Screenshots
Verdict
The clearest difference is price: Bluetooth Sleuth at $0.99 against Blue Box's $4.99. Bluetooth Sleuth also leads on update cadence (every 2 months vs every 7 months). Blue Box's advantage is ratings volume (3 vs 1). On rating, ads, in-app purchases and monetization model 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
Blue Box costs $4.99 and Bluetooth Sleuth $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Blue Box against 5.0 for Bluetooth Sleuth. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Blue Box ships an update every 7 months, Bluetooth Sleuth every 2 months. Both last shipped on September 30, 2026.
| Parameter | Blue Box | Bluetooth Sleuth |
|---|---|---|
| Price | $4.99 | $0.99 — better |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 55.6% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Sunshine Valley Systems | Sean McNeil |
Customer experience
Blue Box
Bluetooth Sleuth
In-app purchases
Blue Box
No in-app purchases
Bluetooth Sleuth
No in-app purchases
Questions
Is Blue Box free?
Is Bluetooth Sleuth free?
Which has better reviews, Blue Box or Bluetooth Sleuth?
Do Blue Box or Bluetooth Sleuth have ads?
Which is updated more often, Blue Box or Bluetooth Sleuth?
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