The creative people at the Yahoo! Developer Network filmed this at my home office in San Francisco.

Thanks to Tom for his engaging questions, and Havi for the opportunity.

An iTunes Staff Favorite, Math Cards rose to the #3 Paid App in Education last year.

Quick quizzes in basic math for iPhone and iPod touch.

Features:

• Add, Subtract, Multiply, Divide Cards
• Per-Card Grades
• Grade-as-you-go
• 25 Problems per Card

This app improves math skill with the built-in lessons on percentage and letter grades.

Great for kids, moms, and dads alike!

Artwork by 24k Logos.

Twitter Co-creator Dom Sagolla covers all the basics of great short- form writing, including the importance of communicating with simplicity, honesty, and humor.

This is the first writing guide specifically dedicated to communicating with the succinctness and clarity that the Internet age requires.

“A code of honor for the new way of doing business.”
-@24kLogos

• The equivalent of Strunk and White’s Elements of Style for today’s social media & marketing messages
• Inspiring quotations from comedy to poetry from some of the best writers
• The authoritative approach to Twitter, written by its creators to include other social networks like pure text messaging

“The book is awesome, but the app is sexy.”
-@atebits

140 Characters is a much-needed guide to the kind of communication that can make or break a reputation online.

“This is game-changing.”
-@schwa

Features:

1. Built-in Web browser, with Bookmark



2. Regular updates to the text
3. Integrated Twitter streams of all 140 “characters” to follow



4. Additional Video and Photo content

The text is also supports Copy/Paste throughout.

Even if you have the Kindle edition, this condensed and updated text will provide the freshest reading experience. Tune in to the @bookapp Twitter account for the latest developments.

Keywords: Twitter, Facebook, social, networking, writing, book, links, lead, value, master, evolve, accelerate.

Now Available in the iTunes App Store.

As co-founder of iPhone Developer’s Camp, I maintain contact with developer communities all over the world. One very passionate group has formed in the Netherlands, and has invited me to sponsor, organize, and speak during two great events. The first is a daylong hackathon:

iPhoneDevCamp Amsterdam
November 25th, 2009
11am-4pm (with lunch break)
Westergasfabriek
Attendance Max: 200 people
Also sponsored by One More Thing and PayPal

The second is a two-day conference:

iCE Amsterdam
November 26-27, 2009
Westergasfabriek
Session entitled “The Dollar App” on the 26th
Session entitled “Market Your App Through Social Media” on the 27th

One feature of these events is that we’ll have my book 140 Characters on site for purchase and I’ll be signing them throughout the week. In addition, we are reaching out to the larger iPhoneDevCamp Netherlands community with a special offer:

All students and iPhoneDevCamp.nl attendees who join us at iPhoneDevCamp Amsterdam on the 25th may attend iCE Amsterdam for 75.00€, incl. VAT (a discount of 470.00€). In addition, all qualifying registrants will receive a free copy of 140 Characters: A Style Guide for the Short Form with their purchase. Simply comment here or email the organizers to identify yourself.

I’m very excited to visit Amsterdam for the first time with my wife Meredith, and Hypertext Edition coders Jonathan Wight & Mike Lee, among other excellent presenters. We do hope to broadcast a portion of the proceedings so stay tuned for more information as the date approaches.

It was a thrill to present Big Words at the first ever App Store Showcase at the Apple Store in Downtown San Francisco. I was in august company, where we presented in this order:

1. Mobile Music Messenger
2. Big Words
3. MobiQpons
4. Jurassic 3d Rollercoaster Rush
5. Dropbox
6. Panelfy
7. Surf Report
8. Jaadu VNC
9. Air Guitar
10. Navigon

Every one of these Apps is worth your download!

Thanks to Seth Socolow who organized this, and everyone who joined us—it was a blast and we hope to do it again soon.

As soon as I can, I’ll include an audio commentary to explain some of these slides.

I’m happy to present this at any iPhone or Mobile Design / Development event near you.

I no longer work at Adobe, but have gone full time with DollarApp and my latest project 140 Characters. Adobe has recently relaunched the site, allowing me to embed this well-produced video here.

Thanks to everyone at Adobe for supporting iPhoneDevCamp and my early efforts with iPhone.

Math Cards version 1 has been removed from the App Store. Math Cards 2 is now shipping from AbleMac for $1.99.

Thank you to everyone who bought Math Cards version 1 and all of you who reviewed it!

We still have Big Words, and there is more coming soon from DollarApp.

DollarApp is thrilled to announce its support of iPhoneDevCamp 3, taking place at Yahoo! in Sunnyvale. Hundreds of Designers and Developers for iPhone and iPod touch are expected to converge on July 31 through August 2nd – check out the Agenda!

The event is inspired by BarCamp, SuperHappyDevHouse, and MacHack, to develop Cocoa Touch and Web-based applications for iPhone and iPod touch. This follows the previous iPhoneDevCamp events held at Adobe Systems in San Francisco, July 2007 and August 2008. Out-of-town guests are welcome.

Attendees will include Cocoa Touch developers, web developers, UI designers, and testers, all working together over the weekend. Development projects will include both solo and team efforts. While some attendees will wish to work solo during the event, we encourage attendees to team up, based on expertise, to work in ad-hoc project development teams. All attendees should be prepared to work on a development project during the event.

Registration is now open.

Attendees will be able to:

• Create new applications for iPhone and iPod touch.
• Migrate Mac OS X applications to iPhone and iPod touch.
• Test and optimize applications for iPhone and iPod touch.

The event will feature:

• Simultaneous Events Worldwide
• Meetup Time on Friday with Refreshments
• Catered Breakfast, Lunch, and Dinner on Saturday and Sunday
• Saturday Keynote (TBA)
• Open Mic for Questions
• Ad Hoc Sessions by Participants
• Late Saturday Gaming
• Sunday Keynote (TBA)
• Hackathon Contest

Last year was an incredible success: the winners went on to do righteous things, and the sponsors saw tremendous growth. We doubled the previous year’s attendance:

We expect this year to more than double the size and scope of the event. In order to cover the additional overhead, we may need to charge a small fee (up to $50) for folks to book a spot at the event.

We are committed to staying not-for-profit; all charges will go toward the production of iPhoneDevCamp, and the founders don’t make a cent. The founders are Raven Zachary (who had the original idea), Dom Sagolla, Christopher Allen, William Hurley, and Blake Burris, with the honorable Chris Messina presiding. We are currently seeking:

• Sponsors
• Donations
• Volunteers

To get involved with the above, please email Raven and Dom: info@iphonedevcamp.org.

We can’t wait to see what awaits us this year! For now, we’ll leave you with That Phone Guy:

The folks at FITC Mobile have invited me to deliver an update to the speech that launched DollarApp, entitled “Why A Dollar“. I’ll be talking about the strategy behind “140 Characters“, the hypertext book app coming this Fall.

By all accounts, this conference is not only action-packed, but also a huge party. Check out the highlight reel from the last one:

FITC Toronto 2009 – Highlight Reel from FITC on Vimeo.

If you have the means, I highly recommend attending, September 12-14, 2009 in Toronto, Canada.