小資記價筆記本

功能說明：
1. 掃描發票 QR Code 裡的交易紀錄，將購買資訊儲存至手機中
2. 手動輸入購買資訊儲存至手機中
3. 查詢之前的購買紀錄
4. 將預定購買之物品加入待買清單，避免忘記 Function:
1. Scan the QR Code in the invoice transaction records, the information will be saved to the phone purchase
2. Manually enter the purchase information stored into your phone
3. Query record before buying
4. The purchase of items scheduled to be added to the list to buy, avoid forget