Premium Bonds Checker Plus

Premium Bonds Checker Plus will display the UK National Savings & Investments (NS&I) prize draw wins for multiple people back as far as 2011 for free, but it can do more.
It can show how near (or how far away) you have been to winning each prize, if you do win a prize it will tell you how close you came to winning another.
It will keep track of all winnings, show a running total of wins across the years, calculate the percentage return of wins against the value of bonds, and provide you with an annual break down and overall summary.

If you have bought your bonds in multiple purchases, it will show how each purchase has fared, keeping track of the number and value of wins for each purchase, and the last time each had a win.

You are not restricted to a single persons bonds as the app can keep track all of this information for multiple people.

You are not restricted to just six months' worth of results as the app can provide all this information back to the beginning of 2011.

As a piece of trivia, it also shows how many Lucky Bonds there are, bonds which win prizes more than once.

The app has no adverts and does not collect any personal information. The extra capabilities costs just 99p for one year's use, (please ignore the Play Store saying it costs £0.99 - £2.49, its a Play Store flaw, it only costs 99p).

In order for the app to be able to provide this information you will need to do a one-time setup and enter in your current, and if you have them, your past bonds numbers. If you only have a few bond purchases you could enter them in manually but the app also provides an easy way to enter in your current numbers, simply log in to the NS&I website and copy your bond numbers from there, they can then be pasted straight into the app.

The only permissions required are for Access to the Internet and Googles Billing and Licensing services.

The app also has very low bandwidth. Once you have entered in your bond numbers and your initial results are all returned, unless you make any changes, from then on, no further internet access will be initiated until the time of the next draw when the app will check to see if your current results are ready.