Debtor version 1.5 with support for iOS 8 and the new iPhone 6 and 6 Plus is now available!

Debtor version 1.5 is now available in the App Store.

Debtor Calculations iPhone 5s

The keyboard functionality has changed in this version to use the full keyboard instead of the number pad keyboard. This way, I was able to eliminate the need for an accessory bar above the keyboard with Navigation and a Done button. This frees up more space for content, which is needed on the iPhone 4S. The standard keyboard already has a Next/Done button. Plus, tapping anywhere in the background on the Calculation screen (the first screen in the app) will dismiss the keyboard!

Debtor Comparisons iPhone 6

Support has also been added for the new iPhone 6 and iPhone 6 Plus, and for iOS 8 as well. Feedback and reviews in the App Store are appreciated!

Debtor Comparison Results iPhone 6 Plus

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Debtor version 1.2.1 is now available!

This update to Debtor for iPhone® or iPod Touch® includes some interface tweaks for the comparison feature introduced in version 1.2, along with bug fixes and an update to the Comparison and Results screens so that they have the same background as the main screen. Download it now!

Debtor version 1.2 now available!

Debtor 1.2
Debtor version 1.2 has been approved for sale in the iTunes App Store. This version adds a compare feature. Compare the current monthly payment to any number of other payment scenarios, or compare the current number of months to any number of months. Debtor will show how much money can be saved by paying more per month, or paying off a debt in fewer months. Conversely, it will also show how much extra money will be owed by paying less per month, or paying off a debt in more months.

Numerous bug fixes are also included in this update.

Introducing Debtor for iOS!

Debtor on an iPhoneMy first iOS app, Debtor, is now available for free on the App Store! At this time it’s for iPhone only. View it in iTunes here.

I came up with the idea for Debtor when I was working on my household budget, and I wanted to calculate how much money I should set aside for credit card bills. The goal is always to pay them off as soon as possible- but how much can I save by paying them off sooner, and how much money does it really cost to pay off a balance of, for example, $5000? With an APR of 11%, and a monthly payment of $300, Debtor will calculate that you will pay $460.65 in interest, for a total of $5460.65.

This is just the beginning, version 1.0. I am currently working on an update, which will add features and fix bugs, so keep an eye out for that in the coming weeks.

Replacing the Battery in an iPhone 3G

My daughter’s hand-me-down iPhone 3G has had a bad battery for awhile, but it hasn’t been an issue until now, as we will be traveling this week. I have extensive experience opening up Apple computers and gadgets, going back as far as 2003 when I upgraded the hard drive in my white iBook G3 to a whopping 60 GB. The only time I ever opened up an iPhone before was once to replace the back panel of an iPhone 4. I’d never tinkered with the guts of an iPhone before, but since this was just an old iPhone 3G I figured it was low risk. This iPhone is really a spare anyway.

So I decided to replace the battery myself, and ordered a replacement battery from ifixit.com. It arrived in only a few days. I was excited to get started, so I didn’t bother reading the instructions before removing the two screws on the bottom of the iPhone. Then I already hit a wall and had to read the directions– I realized I didn’t know where the iPhone display separates from the bottom! After reviewing the directions, I read that the display is only the part of the phone inside the chrome bezel. Then I hit another stumbling block– how do I open the phone? Do I pry it open like my old 2nd gen iPod? Turns out I need a suction cup or duct tape to adhere to the screen so it can be pulled off. I really wish that information was more obvious, but I blame myself for not reading the instructions. I searched the apartment for about a half hour before I finally found something with a suction cup.

I used the plastic holder for a shaver in the shower to pull of the display, and it came off fairly easily. The risk in that step is if you pull too hard you might rip out the cables that connect the display to the logic board.

Once the iPhone was opened up, I followed the directions on ifixit.com to disconnect the tiny cables, remove the correct screws, and then pull out the logic board. Whenever there are lots of screws are being removed, it’s critically important to know where they go when it’s time to put them back in. For this project, I  laid all the screws off to the side, in a pattern matching where they came from, so they look like a connect the dots puzzle. Removing the battery was tricky because it is glued to the back of the phone. I just kept prying and wiggling until it came out. I made sure not to apply to much pressure with the spudger tool because I was concerned that it might snap under pressure, but it survived.

The new battery came with adhesive already applied to the back of it, so I just removed the 3M backing and carefully put the battery back into it’s snug little spot. Then I began the reassembly process, putting the logic board back into it’s spot, and screwing it in. The nice thing about reassembling the iPhone 3G is that every part has it’s place with no wiggle room, so it was obvious when the battery and logic board were back in place. The hardest component to put back in it’s place is cable #3, which just slides into it’s little spot on the logic board. All the cables snap into place except this one. I used a tweezer to push it back in because it was not possible to do with my fingers. Once all the cables were in place, I decided to test it out and turn on the phone to check that everything works before closing up the case. Just then I decided to help my wife out and hold my 4-month-old baby so she could do whatever she needed to get done at that time. I plugged in the phone because I didn’t know if the battery would have a charge. I powered on the phone, and the touch screen and everything was working, and then all of a sudden the baby I was carrying grabbed the iPhone power cord and sent the phone flying to the ground, and the screen was pulled off! So I put my son down, and worked for another 20 minutes getting that pesky #3 cable in it’s spot and test everything and promptly completed the reassembly once I saw that the screen worked as it should. I wonder how the iPhone software deals with the screen disconnecting while it’s powered on?

Replacing the battery on the iPhone 3G was fairly easy to do. The trickiest part is the #3 cable that you have to push into it’s tiny slot. I also stripped one of the screws, but I figure that to be a fluke thing. I would recommend others that are comfortable opening up their electronics to make this repair.