iPhone Screenshots


Control Arduino, Raspberry Pi, ESP8266, ESP32, Particle Photon and Electron, and many other microcomputers with an iPhone?

Building a smart home or robot? Just learning electronics? - Blynk works for everyone.

Blynk is the first and only drag-n-drop mobile app builder for the microcontrollers and Internet of Things (IoT)

Connect any sensors and control any actuators connected to your board.

Use a wide variety of widgets like buttons, sliders, graphs etc. to visualize sensor data and control any electronics from anywhere in the world with your own app.

Blynk is easy. You will start tinkering in 5 minutes!

All you need:
1. Set up widgets with a just a few clicks
2. Upload Blynk example sketch code to your hardware
3. Enjoy Blynking!

Check the examples in the library to get started and build Your Internet of Things. It doesn't matter if you are newbie or pro.

Blynk works with every hardware you can imagine, even with Bluetooth Low Energy(BLE)

Just look at this list of already supported boards and shields:
• Arduino: Uno, Nano, Mini, Pro Mini, Pro Micro, Mega, YÚN (Bridge), Due
• Raspberry Pi (all models)
• ESP8266
• ESP32
• Wemos D1
• Particle Core
• Particle Photon
• Intel Edison and Gallileo
• TinyDuino (CC3000)
• Wicked WildFire (CC3000)
• RedBearLab CC3200, WiFi Mini
• Energia
• LinkIt ONE
• Sparkfun ESP Thing
• Sparkfun Blynk Board
• WiPy
• Espruino

• Linux
• PC (Ubuntu, etc)
• Python (scripts only, library on the way!)
• JavaScript ( https://www.npmjs.com/package/blynk-library5 )
• Node.js (Linux, Windows, OSX, Raspberry, Edison, ...)

Shields and connections:
• USB, connected to your laptop or desktop computer (no shield required!)
• Ethernet shield (W5100)
• Adafruit CC3000 WiFi
• Official Arduino WiFi shield
• ENC28J60

...And this list is constantly updating. You can even write your own hardware library because it's Open Source.

You can use our Blynk Cloud for FREE. But if you want to be the boss - deploy your own Blynk Server with a single line of code and have full control in your hands. You can even run it on your Raspberry Pi ! Cool, yeah?

If you like Blynk - leave us a review. A good one of course :) Because bugs and crashes should go to forum - this is the best way to fix them.

Happy Blynking!

What's New

Version 2.18.0

- New widget: Accelerometer
- Updated default ports: 443 for Blynk Cloud and 9443 for local servers
- Video Streaming widget: added an option to force TCP transporting
- Added support of min and max properties in setProperty command
- Fixed bug when Terminal widget didn't print text when assigned to device selector
- Fixed bug when Map widget couldn't be scaled to fill whole canvas
- Removed obsolete Graph & History Graph widgets from Widget Box

IMPORTANT: If you run a local server, make sure you have at least 0.30.0 server version.

Ratings and Reviews

4.1 out of 5

29 Ratings

29 Ratings

Nice concept but

Lex of Portland

... failed execution. Blynk's cloud server needs to be online for the app to work, but it is unresponsive. Also their 'Heroku' webpage which is supposed to have examples is also offline.

Edit: Hi developer thanks for reponding nearly a year after I reviewed your app. Well your one-time server blackout coincidentally happened at the exact time I was trying to use your app. Uninstalled and forgotten. At least until you dug up this negative review and commented.

Developer Response

Hi Lex,

UPD: Sorry it took us so long. Apple only recently allowed developers to reply to reviews. And we used this opportunity to reach out to you.

We still hope you will join amazing community of 300,000 developers and makers, who successfully use Blynk for their connected projects. By the way, our cloud is open-source and you can even run your own sever on a Raspberry Pi. Which means, that you will be fully independent of Blynk. How does it sound for you? It's just one line of code to get it running.

Actually, Blynk is up and running since May 2015. We only had one blackout because of the host provider, but those risks were mitigated 2 years ago.

Examples site is also up and running. All the examples are on our github page and included in Arduino library.

Easy and fast


Widgets and interface tools are well thought out. Great documentation and examples help get an application up and running quickly.

Fantastic interface builder for IoT (esp8266)


This service is excellent and empowers people to create functional and nice looking iOS interfaces for their arduino projects. Drag and drop!

Developer Response

Thank you! We are so glad you liked it!


Blynk Inc
52 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2017 Blynk Inc.
In-App Purchases
  1. Pack of 1,000 Energy $0.99
  2. Pack of 5,000 Energy $3.99
  3. Pack of 2,400 Energy $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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