<p>To get the balance and list of transactions you could do an HTTP get to blockchain.info. E.g:</p>

<p><a href="http://blockchain.info/address/17w9uVZuPgsY7iLBVGB7qTZ1ZiZnTJKHLq" rel="nofollow">http://blockchain.info/address/17w9uVZuPgsY7iLBVGB7qTZ1ZiZnTJKHLq</a></p>

CC BY-SA 3.0
2012-07-04T09:09:21.820Z
2012-07-04T09:09:21.820Z
jim618
<p>For Android, Bitcoin Balance Scanner (from Beyondem) will display the balance after converting using the exchange rate:</p>

<ul>
<li><a href="https://play.google.com/store/apps/details?id=com.beyondem.bitcoinbalance" rel="nofollow">https://play.google.com/store/apps/details?id=com.beyondem.bitcoinbalance</a></li>
</ul>

<p>BitcoinBalance (from London Trust Media) will display the number of bitcoins.  This basically just launches the web-based blockexplorer for the address scanned.  It will not show any unconfirmed transactions.</p>

<ul>
<li><a href="https://play.google.com/store/apps/details?id=com.londontrustmedia.bitcoinbalance" rel="nofollow">https://play.google.com/store/apps/details?id=com.londontrustmedia.bitcoinbalance</a></li>
</ul>

<p>Also, Scanbook for iPhone and Android:</p>

<ul>
<li><a href="http://itunes.apple.com/en/app/scanbook-bitcoin-address-utility/id536215208" rel="nofollow">http://itunes.apple.com/en/app/scanbook-bitcoin-address-utility/id536215208</a></li>
<li><a href="https://play.google.com/store/apps/details?id=paymium.paytunia.scanbook" rel="nofollow">https://play.google.com/store/apps/details?id=paymium.paytunia.scanbook</a></li>
</ul>

CC BY-SA 4.0
2020-01-18T08:21:29.517Z
The apple link for Scanbook doesn't work and there is no such app in the app store.
ricardo Mastrangelo
CC BY-SA 3.0
2012-07-25T07:43:00.197Z
2013-08-12T15:51:55.007Z
2013-08-12T15:51:55.007Z
Stephen Gornick
<p>What I'm looking for is an app that lets a person scan a QR code containing a Bitcoin address and then see the balance and transaction history for that address. </p>

<p>For a specific use case, a mobile phone (or Android tablet, more likely) is going to be made available at an event to allow people to check the balance of their bitcoin address.  Attendees with their own smartphone can use their own mobile wallet app but for those without smartphones and those who don't know (nor care) about bitcoin, the QR code on their badge (or wristband) will work as their wallet for receiving small payments (rewards for their participation).  The badge might be something like  this, for example:</p>

<ul>
<li><a href="http://www.paymyaddress.com/" rel="nofollow">http://www.paymyaddress.com/</a></li>
</ul>

<p>The app can be pretty simple -- a text field to enter the firstbits (and a button to optionally allow a scan of a QR code), and then the balance is displayed (with transaction history below, optionally).</p>

<p>Since it would be used by people just walking up, it shouldn't require any registration or login.  Simply scan and view.</p>

<p><a href="http://BTCBalance.net" rel="nofollow">BTCBalance.net</a> would work for this but it isn't suited well for use from a mobile.</p>

<p>Has anything that does this been built already?</p>

CC BY-SA 3.0
2013-04-30T01:14:18.750Z
Incidentally, there is a pull request for the Bitcoin-Qt client which will allow Watching only addresses.
Stephen Gornick
CC BY-SA 3.0
2012-07-04T13:28:32.373Z
I can build something like this for you. When do you need it by?
Shamoon
<address><mobile><qrcode><balance>
Is there an Android app that will scan a QR code and show the balance?
Stephen Gornick
# Is there an Android app that will scan a QR code and show the balance?

(Asked by: username_0 on 2012-07-04)

What I'm looking for is an app that lets a person scan a QR code containing a Bitcoin address and then see the balance and transaction history for that address.

For a specific use case, a mobile phone (or Android tablet, more likely) is going to be made available at an event to allow people to check the balance of their bitcoin address. Attendees with their own smartphone can use their own mobile wallet app but for those without smartphones and those who don't know (nor care) about bitcoin, the QR code on their badge (or wristband) will work as their wallet for receiving small payments (rewards for their participation). The badge might be something like this, for example:

* <http://www.paymyaddress.com/>

The app can be pretty simple -- a text field to enter the firstbits (and a button to optionally allow a scan of a QR code), and then the balance is displayed (with transaction history below, optionally).

Since it would be used by people just walking up, it shouldn't require any registration or login. Simply scan and view.

[BTCBalance.net](http://BTCBalance.net) would work for this but it isn't suited well for use from a mobile.

Has anything that does this been built already?

**Tags:** address, mobile, qrcode, balance

> **Comments:**
> **username_1**: I can build something like this for you. When do you need it by?  
> **username_0**: Incidentally, there is a pull request for the Bitcoin-Qt client which will allow Watching only addresses.  

---

## 2 answers

### Answer by username_2 on 2012-07-04. Score: 1

To get the balance and list of transactions you could do an HTTP get to blockchain.info. E.g:

<http://blockchain.info/address/17w9uVZuPgsY7iLBVGB7qTZ1ZiZnTJKHLq>


---

### Answer by username_0 on 2012-07-25. Score: 1

For Android, Bitcoin Balance Scanner (from Beyondem) will display the balance after converting using the exchange rate:

* <https://play.google.com/store/apps/details?id=com.beyondem.bitcoinbalance>

BitcoinBalance (from London Trust Media) will display the number of bitcoins. This basically just launches the web-based blockexplorer for the address scanned. It will not show any unconfirmed transactions.

* <https://play.google.com/store/apps/details?id=com.londontrustmedia.bitcoinbalance>

Also, Scanbook for iPhone and Android:

* <http://itunes.apple.com/en/app/scanbook-bitcoin-address-utility/id536215208>
* <https://play.google.com/store/apps/details?id=paymium.paytunia.scanbook>

> **Comments:**
> **username_3**: The apple link for Scanbook doesn't work and there is no such app in the app store.  

---

