The Catloaf Software Blog

Trainer HD v5.3 released

20 Apr 2014
The latest version (5.3) of the Trainer HD series of educational apps is now available on the App Store.

Along with the usual cohort of bug fixes, as well as the new ability to send challenges from within the game to your friends, we have made an important change to the way the apps are being priced and marketed.

This new version is now ad-supported for the instruments that have not been purchased. This means that in lieu of having to purchase the instrument to unlock all of its features, you can now choose to instead watch ads, in the form of banners and the occasional interstitial. This will in turn allow us to reach more users who wouldn't otherwise be able to afford to buy the full app or its instruments to use it.

Ad-supported instruments have vastly extended capabilities compared to previous versions of the app, however they do not include the full range of training options (for instance you are limited to the first 12 frets). To fully unlock them as well as remove the ads, you will need to purchase the instrument or the discounted bundle of all instruments.

If you have made purchases in a previous version of the apps, you will not see ads or any changes in the way you use the instruments. Likewise, the instruments included when you own one of our instrument editions are not affected. With those editions, the main change is that you are now able to play all the other instruments like in the free edition.

This change affects all editions of Trainer HD that include in-app purchases, meaning the popular free version as well as each of the instrument editions (Guitar, Bass, Banjo, Ukulele and Mandolin). The Complete edition stays ad-free as always.

We believe this is a move that will be seen as a net benefit for our users, as they will be able to enjoy more of the app before having to make a purchase decision.

As always, feel free to contact us directly with any questions and comments at

Trainer HD updated for iOS 7 and more

06 Dec 2013

We are proud to announce that version 5.2 of our Trainer HD series of apps is now out on the App Store, finally bringing full support for the new iOS 7 system!

A quick run down of the new features in this release :
  • A brand new lighter design for the app icons. Check them out below!
  • Full support for iOS 7 and the new 64-bit A7 devices (iPhone 5s and the newest iPads)
  • Now implementing Game Center challenges. Send challenges to your friends so they can try to beat your latest high score! We'll add more types of challenges in later updates.
  • You can now pick which accidentals to show on the fretboard map in Free Play mode. The default depends on the tuning, but you can override it to only sharps or flats.
  • We've fixed a ton of bugs too. Please feel free to email if you encounter any odd issue with the app.

As a result of these changes, we have had to raise the minimum iOS requirements to iOS 5.1.1 or later. If your device is eligible to be upgraded (which includes all iPads), make sure you are up to date to get this version and further updates.


Complete Edition
Free Edition

Thanksgiving weekend sale!

27 Nov 2013
To commemorate the holiday here in the US, we are having a big fire sale on all our Trainer HD apps.  from Thanksgiving Day (November 28th) all the way till Cyber Monday (December 3rd). All apps and instruments will be deeply discounted!

The various editions of Trainer HD are the following :

We are also readying the release of the next version of these apps (5.2) which should come out very shortly. Among other things, this new version will include full support for iOS 7 and the new 64-bit devices from Apple, most notably the iPhone 5s and iPad Air.

Of course, upgrades from previous versions will be free so don't wait to take advantage of the special pricing!

Labor Day Sale on all Trainer HD apps!

31 Aug 2013
This weekend marks the end of the summer, and we're having a sale to coincide with the holiday here in the US! Now through Monday, September 2, the following prices are in effect for our Trainer HD apps for iOS:

  • Each of the instrument editions are on sale at a third of the price (only $0.99 instead of the regular $2.99). This includes the Guitar, Bass, Banjo, Ukulele and Mandolin editions.
  • The Complete Edition, including all instruments forever, is now available for just $3.99.
  • For our free edition, in-app purchases for the electric guitar and the bundle with all instruments are similarly discounted.
Act now before the weekend is over to take advantage of these special prices!

Coming Soon: Trainer HD 5.1

14 Aug 2013
It has been quite a few weeks since our last update to the Trainer HD series of apps. The iOS world is abound in excitement with the news of the forthcoming next major version of the OS, iOS 7, which is due to become available in the coming weeks.

We are hard at work on the next versions of our apps that will take advantage of the new technologies introduced in the new iOS. This also means that we have to reconsider how far back we are going to keep supporting older versions of the system.

The next version of Trainer HD, version 5.1, will be mostly a bug fix release. We have identified a number of areas that really need to be worked on to improve the reliability and usability of the software, and we are going to focus on these first.

Version 5.1 will be out within 2 to 3 weeks. It will also be the last version to support iOS 4.3.

After this release, further iterations of Trainer HD will require at least iOS 5 and will also take advantage of the new features introduced in the new iOS 7. We have quite a few nice surprises in stock!

Fortunately, at this time very few of our users seem to still be running on iOS 4. If your device still runs an old release and is eligible to be upgraded (unfortunately not all devices can be updated), then by all means make sure to update!

Memorial Day Sale: Guitars 66% off on Trainer HD

24 May 2013
A few days ago, version 5.0 of our series of educational apps for musicians, Trainer HD, was released on the Apple App Store.

The most visible new feature on version 5.0 is the brand new graphic redesign of the app, making it a whole lot more attractive on first launch.

We have more in store for the next versions of the app, but to celebrate this new major milestone, along with the fact that this weekend is the Memorial Day holiday here in the US, we're having a sale!

For this weekend only, from Saturday May 25 till Monday May 27, all guitars will be available at 66% off! This includes :

  • All guitar instruments in the free Trainer HD app (6-string, 7-string, 8-string, 12-string and acoustic). The bundle for all instruments is also reduced in price.
  • The Guitar Edition is available at a discounted price ($0.99 instead of $2.99)
  • Finally, the Complete Edition has a discounted price to reflect the availability of the cheaper guitars.
A great way to start the summer! 

New: 8-string Guitar in Trainer HD

27 Feb 2013
Today, all editions of our Trainer HD apps have been updated to version 4.8, which includes a major new feature: the addition of the 8-string electric guitar as a new instrument!

8-string Electric Guitar

More and more manufacturers are now offering 8-string guitars for sale, and we felt there was a growing need to have an app to help you learn its unique fretboard. We believe Trainer HD is the first iOS guitar app to actually do so!

This new instrument complements the existing instruments for 6-string guitar (electric and acoustic), 7-string electric and 12-string acoustic. This brings the total number of instruments available in the Trainer HD apps to eleven!

Like all instruments, this one comes with a few standard tunings, and you are also able to define your own custom tunings if needed.

Update your app today or get the free edition now to give it a try! The instrument can be fully unlocked through an in-app purchase, at the same price as the other guitars. If you bought all instruments previously, either as an in-app bundle or through our Complete Edition, then you'll get the new 8-string guitar for free after you update!

Valentine's Day Sale for Trainer HD

13 Feb 2013
It's that time of year again! Would you like a little bit of help serenading your valentine this year ?

Then we're making it easier for you with our Valentine's Day sale on the acoustic instruments for Trainer HD!


The instruments on sale include the acoustic guitars (both 6 and 12 strings), the ukulele and the mandolin. They will be available at 1/3 of their regular price ($0.99 in the US instead of the regular $2.99).

This offer only lasts one day, Valentine's Day, which is February 14, 2013 only!

In-app purchases and special edition apps affected by this promotion :