Gash Hex

Gash Hex can convert big integers between different bases simultaneously. You chooose your base, input a number in, say, binary or hexadecimal format, it gives you back this number in all the rest bases.
This is a beta, only BIN, HEX, DEC and OCT are actually supported. There's nothing too complex to bring it to all of the 1...32 bases implemented, just lack of time, sorry. If this is important for you - contact me here or anyway else.
Some issues:
1. No preferences at all yet. This calc is too simple to have at least one.
2. May cause troubles with QVGA (480x320) display resolution. Yes, you may call me a lazy jerk unable to fix this. Also there's no any landscape layout.
3. Input number length is limited by nothing but the Java String type. That is for the results, too. So, you can copy-paste a number of any length, just remember of long-arithmetic affect on performance, it can accidentally get slow.
4. No point. Floating point, I mean. BigInteger is BigInteger.
5. Watch your input mode. It does NOT define what you type or copy-paste. You can input a DEC number in HEX mode and Gash Hex will treat it as HEX. That's impossible to input a HEX number with A...F letters in OCT mode, for example, but it still can be copy-pasted, and Gash Hex will return type mismatch error.