Android Pay app users will soon be able to access monthly deals on treats such as frappuccinos and takeaway food deliveries.

Launching tomorrow (Tuesday 21 June), 'Pay Day' rewards you with special offers for using Android Pay to make purchases in participating stores, or within a particular mobile app.

The offers will only be available on the 'reward day' itself, though, which is the Tuesday before the last Friday of each month.

Android Pay is a 'digital wallet' app which lets you pay by tapping your phone on a contactless reader, and also by clicking the Android Pay icon in certain retailers' apps. You can download it from the Google Play Store on Android mobile phones.

This month's Pay Day reward deals, which are available tomorrow, include 2for1 frappuccinos at Starbucks and up to £5 off a Deliveroo order if you're a first-time customer, with future deals announced each month.

How do this month's rewards work?

  • To get 2for1 on Starbucks frappuccinos, you'll need to show the barista the Android Pay app on your phone when you place your order at the till, before you make the payment. The barista will remove the cost of the second frappuccino (which must be the same size as or smaller than the first). You then tap your phone on the contactless reader to pay.
  • New customers of takeaway delivery site Deliveroo can get £5 off their first order, while existing customers can save £2.50. You'll need to have the Deliveroo app and order between 00.01am and 11.59pm on Tuesday. Place an order using the app, then new customers should enter the 'AndroidPay5' code at checkout - existing customers should use 'AndroidPay2.5'.

How does Pay Day rewards work?

  • To get a reward, you must use Android Pay to pay for something in the participating store, or within a particular mobile app.
  • Rewards will only be available on reward days. Android Pay-maker Google says these will be on 'the last Tuesday before payday'. In practice, that means the Tuesday before the final Friday of each month – so this year that's 21 June, 26 July, 23 August, 27 September, 25 October, 22 November and 20 December.
  • Each month the next Pay Day reward will be announced on the Android Pay website and on social media.

Who can use Android Pay?

First off, you'll need an Android phone. Android's an operating system for mobile phones (just as Windows is an operating system for computers). Android phones are made by many manufacturers, including Motorola, HTC, Samsung, Sony, Acer, Alcatel, Asus, Blackberry, Huawei, LG and ZTE.

A sizable 59% of all smartphones in the UK are Android. A simple way of finding if you've got an Android phone is to check if it's got the Google Play Store app. If it does, you're holding an Android phone.

However, it'll also need to be a fairly new phone to use Android Pay – because it requires version 4.4 or later to run. In practice that means most phones released in the last two years are compatible.

It will also need to be capable of near field communication (NFC). The vast majority of Android phones running version 4.4 will have NFC, but a notable exception is the OnePlus2.

Finally, you'll need to have an eligible Visa credit or debit card or Mastercard with a participating bank or building society. So far, the following banks have signed up to Android Pay: Bank of Scotland, First Direct, Halifax, HSBC, Lloyds Bank, M&S Bank, MBNA and Nationwide.