More updates to Coordinates app

I’m delighted to introduce new update to Coordinates app.

If you missed out version 3.6 features, you can read it here.

Version 3.7!

Dedicated Search Page


We decided to separate search boxes to make it far less confusing for us to code a search feature. And because of that,

UTM Search, Web Mercator and World Mercator are now possible!

And the best of all

Simulator Screen Shot - iPhone X - 2019-01-24 at 16.13.46.png
Simulator Screen Shot - iPhone X - 2019-01-24 at 16.25.31.png

Search location name on the map!

We hope to bring this map search feature to all apps we have, but not until we perfect it.

Again, sorry for bad UI but I’d like you to get this new feature early while I’m working on better design.

After we done, we might as well call it version 4.0!

See you again next time.

Please feel free to send us a message here. We don’t hear anything from you since Version 3.6 :( :( :(

Note: Lan Lon Auto works exactly the same as legacy search. but we might stop offering MGRS option on this section.

Some good news

Hello everyone, I’m delighted to talk about new updates to our apps today.



We added whole new section to this app: Coordinates convertor.

Now you can convert lat & long coordinates, geodetic datums and projected systems. Search online database for any system / datum.

Press EPSG button to access this page

Sorry for bad UI. We will update this soon once we received more feedback

Sorry for bad UI. We will update this soon once we received more feedback

Search spartal reference list online

Search spartal reference list online


If search result is not available. Note that you can put your own custom system. Make sure it’s in proj4 format. for example:

+proj=lcc +lat_1=42.6833319 +lat_2=41.71666666666667 +lat_0=41 +lon_0=-71.5 +x_0=200000 +y_0=750000 +ellps=GRS80 +units=m +no_defs

put this line in code textbox and it will works just fine.


now we have new name for this app

Area & Distance - Map Measure

Yes. It’s now possible to measure distance within this app. We decided to merge DistancePinner into this one app.

Area and Distance in one app

Area and Distance in one app


The best thing with this update is that you no longer need to place center pin before start measuring! Any complex shape will works now as long as there’s no overlapping line!



The app is back up and running as normal. However, we need to add timer between each data access or we can’t provide the best app experience to everyone.



We added bunch of new localization. We still need more downloads to match our past BlastSim app.

We admit we releases new version very often during the past week. Sorry for inconvenience . In the meantime we will update documentation on this website to reflect new feature of our apps.

Again, feel free to contact us for any suggestion, or just talk to us! and we are sorry that we are unable to answer them all during last year.

That’s all about it. See you again next time!

Ps. Anyway, I’m still curious that is anyone is reading this blog. If you want to show that you came pass this, please write “ Katamari “ on the subject section and send me a message lol.
Not required. Just for fun :)

Happy New Year 2019

Happy New Year Everyone!

It’s been more than a year since my last post. Here’s some update

BlastMap is back under new App. BlastSim. Same feature, new name. You can check it out here:


See an outcome if nuclear weapon ever goes off in your city

Regarding Elevation App.

We are very sorry for the app downtime during Oct-Nov 2018. Our app user’s base grown by quite a margin so that our previous system can not support all user’s requests all at once. It took me very long while until I figured out what happen because I was away from my country for over a week without my working MacBook.

Now the situation has been solved, but cost of running this app is too high for the past two months. There will be some changes in the app coming soon to make sure every user will get best experience possible. We are sorry for inconvenience.

Hello July!

I have a lot to share with you today. Let's start with bad news first.

BlastMap has been removed from the AppStore because the app was under going re-evaluation, and it somehow break their Review Guideline. They need an exact precision on the calculation and do not allow entertainment purpose out of this kind of app. I would need to reintroduce this app into completely new app with a lot more plain explanation about the app usage.

There is no guarantee that the app would be back on the AppStore again. The app will stay on your phone unless you delete it. You may want to sync to itunes to backup the app first before deleting if you ever want to re-install it again.

How about good news?

I just finished with my four new apps after BlastMap was taken away (Although two was new rebranded). Anyway, let's start talking one by one.



Elevation App with Google Map. Try the app again on the most popular map on the market.

Developer Comment

Somehow it's not easy to implement both Apple Map and Google Map in the same app. So, I first tried porting Coordinates App to Google Map and it works just fine. However I didn't release that app yet because I did want to introduce version 3 first. Elevation app was much simpler so I decided to begin with this one.




DistancePinner App with Google Map. Try the app again on the most popular map on the market.

Developer Comment

This app help me see flaw of every map app that has save/load feature. So I could updated all current app with new things I learnt while porting DistancePinner into this app




Read, Record, and Track your trip. See GPS data such as, elevation, speed, direction of your current location.

Developer Comment

Just reintroducing same old app into Google Map sounds unimaginative. So I decided to work on this app that could read raw GPS data into more human-readable format.  This app core was based on DistanceCalculator and Coordinates. So it was some kind of hybrid. I decided to make this app help me learning how to do a better UI. 




Test your color vision with the same game that went viral on social network. The game put your color / eye vision to the test by pressing the odd color square in the board.

ColorDiffer is not just a clone, but this game has more to offer with extra game modes!

Developer Comment

It's been a while since my last game on the AppStore. Let's write one while taking a break from map apps.

I played this color test game two years ago on some facebook quiz? So I decided to make one of my own with unique game mode. I hope you will enjoy this game.


I'm going to take a short break before I will work on heavy task again. But I will fix any reported bug within a few days after I got an email from you.

I wish I could start introducing Android Version of my app within this month. I'll keep you updated.

Lastly, if you have any question or suggestion. Please feel free to drop me an email via Contact Us form.

Thank you and talk to you again soon.

Back to work~

Hello again after 3 months

Thanks to Apple Keynote, now I have to get back to work and be prepared for an incoming iOS 11 update.

Let me highlight some of work I had done during the past week.

Now it's possible to edit coordinates directly via in-app text editor. Export to GPX via email

I had some big trouble with SunMap app since the introduction of iOS10 and Xcode 8. The app literally broke so I have to completely reworked with the UI. Luckily I somehow managed to make it run again while introduce few extra updates including localization.

Talk yo you again later~

Hello world

Welcome to my new app website that replaced the old one I use since the first day into app development. Proper About/Contact Us page is now available in this site, so please feel free to contact me if having any question.

Thank you!