Almost a year later – Carbonator v2!

Almost a year ago I launched the Carbonator project, a mobile app for social carb counting. Although it had a few bugs, I got enough feedback to know that people cared about the idea and wanted to see it finished. Well, now I’m working on Carbonator version 2.

I’ve learned a lot since last year and now have a designer, iPhone app developer and diabetes researcher helping me with the new app. I want version 2 to be easier to use and to give faster carb counts, so it’s truly useful to us all.

If you’d like to help, I’d really appreciate if you’d share the link to the new Carbonator website at and sign up to the mailing list there. I’d love Carbonator to reach everyone who’d benefit from it, and to have a strong community of carb counters using it.

Right from the start Carbonator has been very community led. I’d love to hear your thoughts and requests for the new app, so please let me know what you’d like it to do for you.

Getting involved

I wrote a page for this site on how to get involved. The four most useful things you can do right now are to give feedback, help design a logo, spread the word and make a donation towards development, promotion and running costs.

If you’d like to get involved in other ways, please be in touch.

Plans for the Carbonator

One week in, here’s a round up of how the Carbonator’s doing and my plans for it.

The story so far…

It all began on Allison BlassFantasy Diabetes Device post at Diabetes Mine. I loved Allison’s Carbonator 5000 idea, as did everyone else who left a comment!

Realising we could have something a bit like the Carbonator 5000 today, I built The Carbonator web site and The Carbonator iPhone app. They let you post meals, leave comments and carb counts on them, and see the average carb count from the community. It’s not quite your futuristic vision, Allison, but it’s the nearest I can do with 2012’s technology. Call it the Carbonator 2000 for now!

Meeting the community

The Carbonator’s also on Twitter. I’ve talked with Allison Blass, plus Brian Bosh and Rachel Kerstetter, who also commented on Allison’s post. Thanks to your tweets I’ve also met other diabetic technologists Kewl Innovations and Jolt dude.

Kewl make the rather cool ClimaPak, a portable temperature controlled insulin store (there’s a great interview with them about it on A Sweet Life).

I’m also getting to know the online diabetic communities around Diabetes Mine like DiabeticConnect, the Diabetes Hands Foundation and the New Diabetes Movement. And looking for recipes I found diabetic Chef Robert Lewis, who’s flatbread pizza I’m counting at 120 carbs!

Next steps

Technology wise, I’m looking to get the iPhone app finished and launch it on the app store. The login, comment and upload features are nearly ready for launch.

But the main thing now is to keep reaching out. I’d like to know who else would find the Carbonator useful, what you’d like it to do, and how I can make it most useful to the community.

Here’s where I need your help to move things forward.

I’d like to know who finds it useful enough right now that they could help guide its development. Would you like to beta test and shape the app? You can suggest features and vote for ideas on the feedback page, and leave comments here on the blog or on Twitter.

Can you tell the community about it? The Carbonator is a social carb counting app, the more people using it, the more useful it becomes. Please share the links and spread the word among the diabetic online community.

And do you have other ideas for how to develop it, perhaps connecting or partnering with existing diabetes organisations? I’m starting to learn about the many diabetes programs run by groups like the Diabetes Hands Foundation. If you know of a project that could use this technology, would like to connect, partner or explore options with me, please be in touch.

Ultimately I want the Carbonator to be the best it can be – as useful as possible to everyone who’d like to use it. However it develops from here, I hope it’s helpful to you.

Carbonator Mobile v0.1

The Carbonator iPhone app is now ready for testing. Sign up at to become a tester.

The app lets you browse the meals on the Carbonator site and take photos. Currently you can’t upload the photos or comment on meals, these features are coming soon! By installing the app you’ll be notified of updates on your iPhone as they are released.

Please let me know if you have any issues with the app and any features you’d like to see added.

How quickly does the Carbonator need to work?

Allison Blass got in touch on Twitter and wondered if the Carbonator could work quickly enough:

So when the Carbonator becomes, you know, the most popular carb counting app in the world, you’ll just post a picture of a bowl of soup and know exactly how many carbs are in it by the time you’ve buttered the bread. I’m sure that kind of popularity is just around the corner, but in the meantime it can be useful with just a few users.

Say you post a photo of a mystery dish, but you don’t get a count until a week after you’ve eaten it. When you do get some counts, you’ll have learned something. If the Carbonator can give advice and feedback on meals after you’ve eaten them, you’ll get better at doing your own counts in future. Reviewing a food diary helps you learn to count carbs, and getting feedback makes learning easier and faster. Like Allison says in her original post, carb counting is a crapshoot. Who doesn’t get a count wrong or make a guess about a mystery dish every now and then? The longer you’ve been counting, the better you get at doing this. But it needn’t take so long to learn, and we don’t need to learn alone. The Carbonator can make learning to count carbs quicker, easier and maybe even fun.

More people Carbonating would be nice though, so as well as friends and volunteers counting for each other I see another opportunity here. What if you could hire a dietician or diabetes educator to work remotely and give you counts at meal times? There are already diet and lifestyle coaches offering their services over the phone, this would be a new way for them to work with you. Some kind of premium service could be built into the app eventually – you could buy Carb Credits for your account and get all of your meal photos counted for a week. So if you want fat, protein and Glycemic Index counts for that photo as well, and you can pay for the service, they’re yours.

A working prototype

I now have a working prototype. You can upload an image, others can comment and leave their carb counts. The carbonator will show the average count.

In this screen shot you can see Ollie counted 40 and Jackie 60. The carbonator shows the average of 50. Arthur left a comment without a carb count which doesn’t affect the average.

Please leave feedback and let me know if you’d like to help test it.


The website is ready to launch, I’m waiting on the server which should be ready in a day or two. The home page shows a feed of all the meals posted, like this:

Clicking on a meal takes you to its page with carb counts and comments, as shown above. You can post new meals on the upload page.

I think this should be enough to get going and see if it’s useful.

I’m also working on a mobile app that lets you upload pictures straight from your camera, like Instagram.