5/5 rating based on 93 reviews. Read all reviews for EE ToolKit for iPhone.
EE ToolKit is free iOS app published by Thomas Gruber
Let555
The free version is worth trying, it just offers fairly basic electronics items like serial resistors, ohms law and such. Not bad thought as it does the calls for you. It also has many locked features that look very good and appear to be worth the payable upgrade at $6.99. Will be trying the upgrade soon
PriRmentndo
One tool I've been using regularly is the dB cross calculator. It seems I'm always going back and forth between different units and this is the most complete tool I've found - even those on the web. Add in all the other tools, for fun and work, and I find this a very useful app - well worth the price.