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Author Topic: BitcoinTrader - a self-explanatory open-source iPhone app  (Read 741 times)
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July 27, 2011, 01:28:13 PM

I wrote an open-source iPhone app for buying/selling bitcoins. At the moment, it only works on Tradehill, but I plan on adding other APIs. It's only available on jailbroken phones, and it is on Cydia if you want to install it.

Here's the github link:
Here's some screenshots:
Here's part of the README (also available on github) that should answer some of your questions, feel free to ask any I don't cover:

- Why isn't this on the official App Store? You're going to steal all my damn money aren't you?
Nope. The reason is simple: it costs $99 to join the Apple developer program, to be able to have the privilege to submit your app for approval, and I'm an unemployed recent grad who doesn't have a spare $99.
If you're worried about it siphoning off your login information and saving it somewhere, or sending it somewhere, take a gander through the source or run a network sniffer while using the app, you'll see it only ever visits the Tradehill API. Also, it doesn't run in the background, so once you hit the home button, relaunching the app puts you back at a login screen.

- How do I get this on my phone?
First off, you must have a JAILBROKEN iPhone. If yours isn't, but you want it to be, it's a fairly simple process, and utilizing your favorite search engine with surely yield positive results. If you don't want to use the version Cydia, then, next, you can download the source, compile and install, if you're familiar with that process. There's also a precompiled .app available in the downloads if you'd rather transfer it yourself.

- I transferred it to my phone, and I restarted the springboard, but it crashes as soon as I click the icon. Wtf?
Make sure you chmod /Applications/ to 755. You can do that through SFTP or SSH.

- I know my username and password are correct, but it keeps saying I can't login. You suck.
That's not really a question, but, before you can use the app, make sure you have logged in to the Tradehill website and allowed API access (user profile).

- What's it do?
Once you login you have the option to place/cancel an order to buy/sell BTC in any supported currency. There's also full ticker information and all the data is easily refreshable to keep you up to date.

- When I select an order from the list, and confirm I want to cancel it, it doesn't disappear from the list. What the hell, man?
The Tradehill API only offers one "type" when returning a list of orders, and when you send a cancellation request it can take up to five seconds to be executed on the exchange, therefore the order list that is returned to the client when you cancel an order will still have that order listed as "type" active. Refresh after a few seconds and it should be gone.

- Can I help?
Yes. I need feedback. I've only come across the bitcoin project in the last few weeks and I'm not completely familiar with what the needs of a bitcoin trader are or what usability options would be most efficient. So, any ideas, suggestions, or bug reports are more than welcome.
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