Tag Archives: app

MyXray a friendly radiography viewer for the iPad

myxray_icon_blogA new app for those interested to have fun exploring radiographies. Now you can get what doctors get too. []
MyXray is an easy and intuitive app that will let you see your x-ray files as a real doctor. You will be able to get all the details and the extra information that is embedded in x-rays files.

When you take an x-ray the image is saved in a format called DICOM. When you take an x-ray ask your doctor or the radiologist to provide your DICOM file. You can then use MyXray to see that DICOM file. Remember it’s not a normal image. You can’t see it with a common image viewer. DICOM is what doctors and processionals use, and now you can use it too!

What’s the difference with a normal image? Well with a DICOM file you can:

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DICOM IR a DICOM viewer for the iPad

I’m really excited to announce that my new app DICOM IR is now available on the App Store. DICOM is a standard for handling, storing, printing, and transmitting information in medical imaging. The main target for this app are doctors interested to have a DICOM viewer at hand to see a patient radiography. This is not just an image viewer. DICOM IR can access images locally from emails, Dropbox or web links and also it can connect to a PACS server which acts as a DICOM repository.

DICOM is a standard that provides information like patient name, patient ID, age, modality and much more. DICOM IR can also be used by patients which have access to their DICOM files.

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Devobots available in the App Store!!!

Finally DevoBots is ready for sale in the App Store. Download it here!!

DevoBots App Store

DevoBots is a robot builder and a music synthesizer featuring unreleased Devo music & sounds from their archives. DEVO is an American New Wave band formed in 1972 and since then it has maintained a cult following throughout its existence. It’s not only for DEVO fans, it’s also a nice toy for adults and children, allowing you to create a huge number of robots accompanied with electronic loops recorded back in the 80’s with analog synthesizers.  Continue reading

Precautions before creating a server dependent mobile application

A server costs money. Not only the monthly rate you have to pay to keep it alive, also maintenance and system administration takes time, so it takes money.
If you plan to develop an app that uses a server to read/write data, be very careful and before starting anything, take into account these considerations.

  1. Does your server need HA (High Availability)? How to know that!? Does your application need to connect to your server to operate? In the answer is yes, you need HA! That means that your application, to do what it has to do, needs to be able to connect to the server. You can’t prevent when the user will do that and the last thing you want is a bad rating and some complain in the App Store.
    HA is more expensive than conventional systems. It’s more difficult to configure and to administer. If you don’t have experience as a system administrator, and you have a great idea for an app that needs a server to work, think about partnership with a good friend with experience as sysadmin.
  2. Is your server able to scale? What about if your app is a great success and your current configuration is not ready for the overload? Even if your app is great it can become a great deception for the users just because your system wasn’t able to scale when it was needed. Remember, the user doesn’t know and doesn’t care about technical issues. For the user all technical explanations are just excuses. So try to avoid to be in such situation.
  3. Is your app a paid or free app? If it’s a paid app, think about including in the price, not only the expenses to maintain the server. Think also about the expenses for scaling! The same reason of the previous point. Maybe you need to provide 2xTimes or more the performance of your current system. That will cost you money and you have to include that expense in your app price as well. It’s important to plan for an eventual future scenario. It doesn’t depend only on how many times your app was downloaded. How will people use the app? Does it help on common repetitive daily tasks? Does it make intense network use with the server (for example a photo sharing service)? The amount of data to read/write, just text? multimedia? It’s not easy and a mistake can costs not only money but also reputation and bad ratings.
  4. If your app is free, well good luck! It’s a free app and the number of downloads could be huge. Who is going to pay for the server?? Ok you can use ads but remember, a paid app will cost a specific amount of money that you can control. You know exactly how much money you will get for each app and that makes prospection easier. For ad-based apps, you know you will get paid but you don’t know how much and when. If a customer buys the app, he paid for it in that very moment. Even if he’ll never use the app again, the transaction has been made and you got paid. For ad-based ones, maybe he will start using the app next month or never. So risks increase for server dependent free-apps.
  5. Even if your system administrator is a guru, as a developer you have to think about the possibility that your application architecture could create some constrains if time to scale comes. So the whole plan has to be discussed with your admin as well.

Just try to think about how your system will react in case of the worse and best scenario. Don’t let you go only by the enthusiasm of your idea. Keeping a cold mind, will save you from bad headaches.