Tesco International Calling is an iPhone application that offers low-cost international calls, SMS, and airtime recharge. With this app, users can stay connected with their loved ones worldwide without worrying about high call and SMS charges. The app provides great call rates from as low as 1p to over 20 countries and low-cost worldwide SMS.

Moreover, users can send airtime recharge and bundles directly from the app to their friends and family worldwide. The app is simple and secure to use, and users can make international calls over Wi-Fi/Mobile Data or using a local access number. Travel Mode ensures that calls can only be made via Wi-Fi, perfect for when you're overseas and want to avoid roaming charges.

Additionally, users can receive £1 credit when they download the app and use it for their first call. They can also collect Clubcard points when they top up. Calls to the 03 access number are included in the monthly minutes/bundle if you have them and are free for Tesco Mobile customers.

Overall, Tesco International Calling is an excellent app for those who want to stay connected with their loved ones overseas. The app provides low-cost international calls, airtime recharge, and SMS, making it an ideal choice for anyone who wants to save money on international communication.