If you’re a heavy sleeper, or you know someone who has trouble waking up in the morning, you might find iBell useful. iBell is an iPhone accessory that attaches to your iPhone, and it comes with alarm bells that should easily wake up heavy sleepers. We have to mention that there are two models available: iBell, that docks and chargers your iPhone, and the iBell mini that doesn’t provide any docking or charging capabilities. With iBell you’ll get a dedicated alarm app, and instructions that are in Japanese, but since they are self-explanatory, you won’t have any problems with it.
If you wish to turn your iPhone into retro alarm clock, iBell might be perfect, and in regard to the price, iBell and iBell mini are priced at $38 and $27, respectively.