Ble2Serial vs LightDrop

The iOS portable devices will connect with the Bluetooth Low Energy (BLE) to serial port converter devices and exchange data with them bi-directional. The serial port includes RS-232 or RS-422 RS-485 interfaces. The user will test the APP with the SCADA, Robot, UAV, PLC, CNC or etc. with the BLE to serial port devices. The APP will be customized to meet the specific applications.

LightDrop moves files between two devices that share no network. One screen shows a QR code, the other device's camera reads it. No Wi-Fi, no Bluetooth, no cable, no account, no server — just light. WHEN YOU NEED IT • An air-gapped or locked-down machine that will never join your network. • A work computer where USB ports are disabled and cloud drives are blocked. • Guest Wi-Fi that isolates every client, or a hotel network you would rather not trust. • A second screen nearby when email, cloud drives, and cables are not an option. • Anywhere a file has to cross an air gap and email is not an option. HOW IT WORKS • Pick text or a file on the sending device. LightDrop turns it into an animated QR stream. • Point the receiving device's camera at that screen. Fragments land continuously and the progress grid fills in. • Fountain coding means order does not matter and a dropped frame never restarts the transfer — keep the camera pointed and it completes. TURBO TRANSFER (PRO) • A binary QR fountain that packs a full 8 bits per byte instead of encoding through text — 10–30× the throughput of standard mode. • Up to 2900 bytes per frame, at up to 30 frames per second. • LightDrop to LightDrop. Standard mode stays on as a compatible fallback, and the receiver recognises both automatically with nothing to configure. PASSWORD ENCRYPTION (PRO) • Encrypt the payload with a password before it ever reaches the screen. • A bystander's camera can record every QR code and still get nothing without the password. • Standard AES-GCM. Nothing leaves your device to make it work. IMAGES, HANDLED • Photos are compressed automatically before sending, so a normal picture takes a minute or two rather than ten. • The receiving device previews the image inline and saves it to your photo library in one tap. • Images are detected by file content, not by file extension. NO NETWORK MEANS NO NETWORK • No account. No sign-in. No email address. • No server ever receives your data, because there is no server. • No analytics SDK, no advertising identifier, no third-party trackers. • Works in airplane mode, in a shielded room, or on a machine that has never been online. ONE PURCHASE, EVERY DEVICE LightDrop is the same app on iPhone, iPad, and Mac. Pro unlocks on every device signed in to your Apple Account with a single purchase. PRICING • Monthly — 7-day free trial for eligible new subscribers, then renews automatically each month unless you cancel at least 24 hours before the trial ends. • Lifetime — pay once and own it, with Family Sharing for everyone in your group. GOOD TO KNOW • Transfer speed depends on the sending screen's size and brightness, the receiving camera, and how steady you hold the device. Keep both screens clean and reasonably close. • Large files take real time. LightDrop estimates the duration before you start, so the decision is yours. — Privacy Policy: https://yangworks.dev/lightdrop/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ LightDrop Pro Monthly is an auto-renewable subscription. Payment is charged to your Apple Account at confirmation of purchase. It renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. Manage or cancel in your Apple Account settings after purchase. The Lifetime option is a one-time purchase with no renewal.