Function Inspector 4.0 Beta Testing

With this version of Function Inspector 4.0 Beta you will
be able to return directly to this post as well as switch to
the PRO version (must be redone after restart).

I have made some progress after my last post. I have redone the design and User Interface, fixed several bugs and added a Help dialog. More importantly though, I have reorganized the existing code and changed a lot under the hood. There is basically not much that has not changed ;)

Also, I have had some problems in the past with issues that occur only on certain devices, on certain Android versions and so on. It is not that easy for devolopers to make sure that those problems won't occur

That is why I need you to test the Beta version of Function Inspector 4.0! If you have some time and are interested in the new features of Function Inspector, you would do me a great favour if you would install this version on your device and report any issued you may have with this. In the app, you will easily get back to this post in order to receive newer versions or track issues.

This version contains all the features that will be part of Function Inspector 4.0 except for some design elements and translations. If Beta Testing goes well, I will hopefully be able to release this in a few days ;)

Thanks in advance!

Download Current Version

Function Inspector 4.0 Beta 1 (9-11-2012)
Function Inspector 4.0 Beta 2 (9-13-2012) (Bug fixes, Color Scheme, New Design Elements)

Issue tracker

I'm back!

It has been some time since I last posted here or published an update to one of my Android Apps. This has a lot to do with my studies in Software Engineering as well as a new job I got.

But now, I'm back to continue my personal projects. Of course, the main focus will be on Function Inspector as it is by far the most successful and most complex project for now. Function Inspector LITE, for example, has been downloaded almost 80,000 times...

Yesterday, I published an update fixing the issue you can see on the screenshot I got from a user. This occurred on Android Jelly Bean for the first time, I'm sorry for any inconveniences ;)

So there is a lot to do. This is my To-Do-List for Function Inspector:

• Refactoring: Most of the code is older than a year, and I'm pretty sure my programming skills have improved since then ;)
• Performance improvements and bug fixes: Some parts of the app could probably be optimized.
• Design: The design of Function Inspector seems kind of outdated and does not fit into the new Android 4.x design. For example, I could get rid of the menu button.
• Tablet support: The Function Inspector UI works fine on tablets, but it could certainly be optimized.
• New functionality? Here, I'm hoping for some user suggestions.
• Marketing: As satisfying as download numbers are, there are many people out there that could probably need this app.

So as you can see, it won't get boring!

Function Inspector PRO featured in ComputerBILD

I've got exciting news for all you German users out there:
The German magazine ComputerBILD is featuring Function Inspector PRO on todays issue. It is Germany's largest Computer Magazine.
Here's the proof:

Function Inspector Promotion Video

I've published a new video that shows of some of the features Function Inspector has to offer. Hope you enjoy ;)

Function Inspector 3.2

I know, it has been months. But I finally finished an update which brings a lot of features that were requested by my users!

So, here are the changes:

You can now calculate the definite
integral right from Function Inspector

• Definite integral: I integrated the functionality that you know from my other App IntegralCalc. It can be accessed from the menu next to each function.
• Tangent equation: In slope mode, you can now display the equations of the tangents that are currently displayed.
• Improved table: It now looks a lot better and you can choose what three functions you want to use (as opposed to taking the first three).
• Factor out: In the settings or by longpressing the coordinate system, you can now factor out PI, e and DEG from the lables of each of the coordinate axes. This means that you can choose, whether the root of sin(x) is lables (3.1214|0), (1π|0) or (180°|0).

Function Inspector Web Preview 2

Today, I finally continued to develop my Java Applet "Function Inspector Web".

I added many new things such as:

• Parameters work (at least you can drag the slide, anything beyond -5 to 5 can't be set)
• You can enter an unlimited number of functions. They will be added to a list (if syntax is correct) when you press enter and can be deleted by selecting and pressing delete.
• Labled axes
• Function Inspector look!

This is the result:

Dark background, colorful graphs: Function Inspector Web has just adopted
the design of its smartphone model

As usually, you can also see and test the preview on my Function Inspector Web Page!

Function Inspector & IntegralCalc updates!

New Splash Screen for
Function Inspector

One thing that I got a lot of complaints about was the very limited amout of functions that one could use in an equation in Function Inspector. Today's update adresses this problem! IntegralCalc has been updated as well, changing the same thing.

Those are the changes of Function Inspector 3.1:

• More functions like abs(), asin(), sinh(), asinh(), ... (Also applies to IntegralCalc 2.5)
• A Splash Screen is now shown while the app is loading anyway
• New Ad Network in LITE version (also for IntegralCalc 2.5) in order to hopefully make more money xD

The second page of Function Inspector's
new keyboard with new functions and an
info-button

Also, I increased the price of Function Inspector PRO from 0.99 € to 1.49 € which I think is still a price that the app is worth ;)
I hope you like this update!