张大妈 vs PriceBird

“张大妈”是帮助您省心、省钱、省时间的第三方中立购物管家。通过“值得买科技”中立的消费知识库和大模型能力，帮助您在众多电商平台中，多家对比、全面评估、筛选高性价比好物，解决您买什么、怎么买、选哪个的困扰。 【特色功能】 全网搜罗低价：追踪各大平台、优惠券、限时折扣、满减活动……一个不漏，帮你找到低价！ 口碑评价全掌握：汇总全网真实评价，买前必看避坑指南～ 智能对比更省心：智能对比参数价格，帮你轻松选对好物，拒绝当“冤大头”！ 智能帮你选好物：不再海量信息里迷茫！说出你的喜好，即刻推荐优质好物～ 历史价格全知道：追踪历史价格，帮你找准入手时机～ 支持语音和文字：语音或文字输入，轻松下达指令！张大妈秒懂你的购物需求，沟通零障碍！ 【联系我们】 如果在使用中遇到任何问题，可在张大妈应用内的“个人中心-反馈”进行反馈。张大妈会珍视每一条宝贵建议不断优化产品～

PriceBird is a focused shopping calculator for comparing real unit prices. Use it when package sizes, currencies, coupons, deposits, or discounts make a simple price tag hard to trust. What PriceBird can help with: • Calculate unit prices by item, weight, or volume • Compare up to four products with compatible units • Handle coupons, deposits, and full-reduction discounts • Save calculation history locally • Create custom units for recurring shopping scenarios • Show source currency, home currency, and ExchangeRate-API reference-rate update status • Run structured unit-price calculations from Siri and Shortcuts • Open help, email support, or send anonymous feedback from Settings Every calculation feature stays free. Optional one-time purchases let you support continued independent development, and the restorable Supporter purchase adds a subtle badge. Exchange-rate conversion is provided for reference only. Rates may be delayed, cached, or unavailable, so final purchase decisions remain yours.