BLE ToolBox vs SyncKing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BLE ToolBox
This utility app facilitates the development of Bluetooth 4.0 Low Energy accessories. It offers a user-friendly interface for discovering, connecting to, and managing LE devices, supporting various standard and special BLE services for data transfer and remote control.
- Discover and connect to BT4.0 LE devices
- Support for standard LE services (HRP, HTP, BLP, GLP, FMP, CSCP)
- Special BLE services (SPS, Remote, OTA)
- User-friendly interface for device management
- Over-the-air firmware updates
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BLE ToolBox is the right tool for developing BT4.0 LE accessories. BLE ToolBox supports various standard LE Services/Profiles and special service for data transfer and remote control. BLE ToolBox provide an user friendly interface to searching the BT4.0 LE devices with dedicated BT4.0 LE service, connect/disconnect to the device, get the connected device information and service data. Standard BLE services supported : - HRP, Heart Rate Profile. - HTP, Health Thermometer Profile. - BLP, Blood Pressure Profile. - GLP, Glucose Profile. - FMP, Find Me profile. - CSCP, Cycling Speed & Cadence Profile. Special BLE services supported : - SPS, Serial Port Service, setup serial port connection between iOS and BT4.0 LE accessories. - Remote, Remote Control Service. - OTA, Over the Air Technology, update is the wireless delivery of new software, firmware or other data to mobile devices. Note : BLE ToolBox can only work on iOS devices support BT4.0 LE, like iPhone4S or new iPad.
SyncKing
Create and host interactive second screen experiences for live streams or local multiplayer games. Customize with widgets like images, scoreboards, and status updates for real-time audience engagement. Requires a WiFi or cellular connection for both host and viewer.
- Host custom second screen experiences
- Real-time widget updates
- Scoreboard display
- Status sharing
- Audience notifications
- Connect via 4-digit code
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Host your own second screen experience filled with your own widgets. SyncKing is especially useful for live streams - be more engaging with your viewers to improve your channel interactivity. Not only that but is useful for local play whether you are at a pub, at home playing a quiz with your friends.. The options are limitless on how you can use SyncKing. Enable widgets to your liking. Show images, put up a scoreboard, share statuses, send your audience notifications and many other features in REAL-TIME. A valid connection to WiFi or Cellular is required to work for both the 'Host' and the 'Viewer'. Just enter the unique code 4-digit code to connect to the correct host.
Screenshots
Verdict
The clearest difference is update cadence: SyncKing at every 2 months against BLE ToolBox's every 19 months. SyncKing also leads on ratings volume (11 vs 3) and iOS requirement (9.0 vs 15.0). BLE ToolBox's advantage is review sentiment (100% vs 75%). On price, rating, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SyncKing holds the better App Store score, 3.9 against 3.7. Both are backed by a comparable volume of ratings — 3 and 11 respectively. Written reviews complicate that: 100% of BLE ToolBox's written reviews are positive against 75% of SyncKing's, so the app with the better star average is not the one people write more warmly about.
BLE ToolBox ships an update every 19 months, SyncKing every 2 months. The most recent releases landed on July 4, 2026 and June 11, 2026 respectively.
| Parameter | BLE ToolBox | SyncKing |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 3.9 (11 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 75.0% of reviews |
| Number of ratings | 3 | 11 — better |
| Update frequency | Every 19 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Enzytek Technology, Inc. | Ashley Richards |
Customer experience
BLE ToolBox
SyncKing
In-app purchases
BLE ToolBox
No in-app purchases
SyncKing
No in-app purchases









