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SonarPen: World's most affordable Smart Pen for iPads

A project in Hong Kong, Hong Kong by GreenBulb

Funding Successful

The SonarPen is a battery-less and pressure sensitive smart pen that turns all the iPads into a professional creative canvas.
Backers: 2357
Average Pledge Per Backer: HK$307

Funded: HK$724,129 of HK$200,000
Dates: Feb 6th -> Mar 23rd (46 days)
Project By: GreenBulb
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Last Updated: March 23 @ 23:01 -0400 GMT


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Latest News

Android users, your wait is over!

March 23rd - via:
The past 12 hours is like a ride of roller coaster to us. First the arrival of ibis Paint, and now the reaching of the Android SDK development stretch goal. We have prepared for this break though, and found for the best candidate to help us for the... (Read More)

Final Stretch & Screenshot of ibisPaint!

March 22nd - via:
We are on the home stretch!  With 36 hours to go, we are just US$6K away from our $90K Android SDK Development stretch goal — you guys and gals are absolutely AMAZING!  Thank you to everyone who shared about the SonarPen.   (*•̀ᴗ•́*)و... (Read More)

ibisPaint beta App will arrive this week!

March 19th - via:
We have great news — we talked to ibisPaint today and they have confirmed that the demo app will be ready by the end of this week!  This is a big step for us as ibisPaint will be the first full color sketching app supporting the SonarPen.  We... (Read More)

6 Days to Go and a Favor...

March 17th - via:
Hello Backers!   Thank you so much for sticking around for the past few weeks and it’s so amazing that we are entering the final week of the SonarPen kickstarter campaign!  The campaign was backed by over 2000 people and it wouldn’t have been... (Read More)

Big loss on Pi Day 2018

March 15th - via:
Throw back Thursday.  Big loss on Pi Day 2018. "Intelligence is the ability to adapt to change." Stephen Hawking. You will be missed. 😢   @fatlundraw - RIP, Stephen Hawking   Check out these other great campaigns that are helping us reach our... (Read More)

Production update

March 12th - via:
Things are moving fast over at our production partner's workshop.  Here's a photo of the very first test run from the production mould.  There are a few things to fine tune, but overall, everything is going in a fantastic direction and we are on... (Read More)

Final Stretch Goal: Android Support!

March 10th - via:
You guys are amazing!  We have reached our $60K stretch goal in just 3 days.  With just 14 days to go, we have just revealed our ultimate stretch goal of $90K: Android support! This is a big one as unlike the Apple Pencil, the SonarPen is created... (Read More)

Calling for Artists!

March 8th - via:
This post is for backers only. Please visit and log in to read. (Read More)

Design of the Lightning port magnetic pen holder and method to order nib set

March 6th - via:
Hi everyone,  Here are a few photos of the Lightning port magnetic pen holder that we are planning for the upcoming stretch goal.  We wanted a minimalist and clean look and as you can see, it works even if your iPad is in a case (the photo shows... (Read More)

SonarPen: A cheap, pressure-sensitive stylus for sketching on older iPads

March 6th - via:
A recent study disturbingly revealed that young children are using touchscreen devices so frequently that they are growing up unable to hold pens correctly due to underdeveloped muscles. (Read More)

YES! Stretch goal reached, free nib set for every backer.

March 5th - via:
AMAZING!  We've reached our $50,000 stretch goal!  This means every backer will receive a nib set (3 extra ones) together with their SonarPen. Good job guys! Looking forward here's our US$60,000 stretch goal -- the lightning port pen holder + 4... (Read More)

SonarPen at 39,000 feet

March 1st - via:
We've had such a good week of meetings in Tokyo! On our flight back we've noticed that Bluetooth devices are not allowed on board... So the SonarPen is the perfect tool for flights that won't allow Bluetooth connections! Another reason why the... (Read More)

New App Support: ibisPaint

February 27th - via:
Hello from Tokyo, the Mecca of Manga and Anime! ଲ(⁃̗̀̂❍⃓ˑ̫❍⃓⁃̠́̂)ଲ We have great news for sketchers and comic/manga illustrators -- ibisPaint will provide support to the SonarPen!  We had a meeting with the makers of... (Read More)

Funding over $40000, first stretch goal unlocked!

February 23rd - via:
Ta-dah!  A stretch goal has been reached and four new colors have been decided by everyone who completed the survey!  They are BLUE, RED, PURPLE and NEON GREEN. Together with the two initial colors -- BLACK and WHITE, I'm happy to confirm that... (Read More)

Cable Colour Options and App Support

February 15th - via:
This post is for backers only. Please visit and log in to read. (Read More)

100% Funded: Let the Crazy Ride Begin!

February 13th - via:
"Crazy Taxi" by Alan using the SonarPen on Zenbrush 2 AMAZING! We are 100% funded in just 7 days! Thank you so much for your support in the SonarPen -- we are truly humbled by the amazing response you guys and gals give to the campaign. (You can't... (Read More)

Left Hand Demo on Zoomnotes

February 7th - via:
We've got a great question from a left handed person about the SonarPen palm rejection.  The algorithm for the SonarPen rejects all palms regardless of sides. So, it doesn't really matter whether you are a right or left handed person, the palm of... (Read More)

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