The App Store tells me that RCLogbook 3.8 is now live! Wh00t! You should see an update notification shortly. For more on what is new, surf on over to the RCLogbook page or check out the release note post on this blog.

“What is next?” you ask…

Well, we have started doing some behind-the-scenes clean-up and re-factoring for the next release. In the spirit of “release early, release often”, this time around we are going to focus on a big feature or two.

One thing that we can say for sure is 3.8 marks the last release for iOS 3. Going forward, the next release will only run on devices using iOS 4.2 and later. This will allow us to use some of the newer APIs and deliver some functions that could not be easily done on iOS 3. Also, on a more practical note, support in the tools for iOS 3 development is going away as Apple pulls developers forward.

What this means practically is that RCLogbook 3.8 will be the last version of the app that will run on the original iPhone and first-generation iPod Touch since these devices cannot run iOS 4.

Here’s the change log for 3.8 that just went into the user’s guide:

• Cycles now support per-cell voltages, per-pack internal resistance, and per-cell internal resistances. These values can be plotted in the performance plots.
• Added support for unscheduled or one-time maintenance items.
• Badge model pictures in model and favorites lists when maintenance is pending. RCLogbook will now ask for confirmation before using a model with pending items.
• Revamped battery performance plot UI to allow comparison of up to four batteries and improved battery filtering.
• Updated audio capabilities: added click track, additional voice, improved relative volume control, added some flexibility around vibration.
• Save pictures of models taken from RCLogbook to iOS photo library.
• Added location sensitivity setting and changed criteria for matching the current location to a saved location.
• Re-organized settings.
• Added optional color tag to batteries.
• Added maintenance logs, per-cell voltages, per-pack resistance, and per-cell resistances to export/import format.
• Numerous bugs, visual glitches, and UI consistency and annoyances fixed. Lots of re-factoring under the hood in preparation for the iOS 4 transition.

Beta to begin shortly…

One more new feature (mostly) wrapped up after a few days spent tracking down a nasty bug (who knew _currentAction and currentAction hit the same IV?). The performance plots have been revised and extended slightly.

The scale button in the middle lets you select up to 4 different batteries to compare. Then, the data for all of the batteries shows up in the plots.

Now it is off to conquer the tri-state area!

I think we are going to go with this one:

This is (hopefully) a little more obvious than the “!” that was used earlier.