DAVID Ovulation Tracker vs 知子安
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DAVID Ovulation Tracker
This app helps women track their ovulation cycles and identify their fertile window. It allows users to upload ovulation test results for quick analysis and prediction, aiding in conception efforts. The app also provides menstrual cycle calculations and pregnancy-related knowledge.
- Ovulation tracking
- Fertile window prediction
- Ovulation test result analysis
- Menstrual cycle calculation
- Pregnancy knowledge base
- Test record keeping
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An App to track ovulation and help you find your fertile window. DAVID focuses on ovulation test for more than 20 years, and has given support to millions of women to get pregnant. DAVID App specializes in ovulation test and prediction, which is crucial for women in their trying to conceive journey, through which improve their chance of pregnancy and quality of feus. Users can easily upload the test result of ovulation test kit to the App after addition of urine sample into the kit, after that the intelligent App will quickly identify the result, then ovulation calculator will help you to predict ovulation. Among the App, modules such as menstrual cycle calculation, ovulation detection, pregnancy related knowledge, personal data, message, test records, help, system setting, etc. are included. Follow DAVID now and perform ovulation test with our App to boost your change of conceiving, have a healthy baby and communicate your pre-pregnancy or in-pregnancy experience with other woman who are on the same journey as you. Feel free to contact us. E-mail: namarketing@runbio-bio.com Facebook: DAVID by Runbio Instagram: davidbyrunbio
知子安
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记下每一餐,看清每一天。 知子安帮助你记录宝宝每天的喂养、睡眠、大小便、体征和补充剂。按宝宝分别保存,随手记录,按天回顾。 下一餐,心里有数 • 最近喂养、下次时间和今日记录集中在首页 • 自行设置全天相同的喂养间隔,或分别设置白天、夜间的时间范围与间隔 • 下次时间从本餐开始时计算,独立于回顾中的实际平均间隔 • iOS 26 支持系统喂养闹钟,可设置提前多久响铃,需单独允许闹钟权限 • iOS 26 可独立开启锁屏喂养倒计时,在最后一小时查看下一餐计划,需允许实时活动 把喂养放到桌面 • 小号、中号“下一餐”查看计划时间和倒计时,中号增加最近一餐 • 中号“喂奶与护理”和大号合并卡支持桌面亲喂计时,暂停、继续、换侧及确认完成 • 瓶喂和换尿布快捷入口打开App填写,每个组件单独选择宝宝 本餐备奶有参考 • 首版适用于满1个月、未满6个月,足月健康、纯配方奶且未添加辅食的宝宝 • 使用近14天体重与近3个完整自然日的喂养记录,经家长确认适用条件后估算 • 来源为美国儿科学会(AAP)的每日配方奶量参考,单次分摊与取整规则在说明中列明 • 在宝宝设置或奶量旁的问号查看使用说明、计算数据与原文,参考不会自动填入实际摄入 一天的护理,集中看清 • 查看每日喂养餐数和平均间隔 • 瓶喂区分母乳、配方奶与合计;亲喂区分左右时长与合计 • 喂养、尿尿和便便集中在当天护理表格 • 同一天查看睡眠起止、当天睡眠部分和体温等体征记录 • 可按日期查看,在页面上下边界继续翻日 • 从当天回顾修改原记录、左滑删除,或补记实际发生的时间 边照护,边记录 • 亲喂支持左右侧计时、换侧、暂停和继续;最小化后仍可使用其他记录入口 • 快捷记录入睡、睡醒,也可补记完整睡眠起止 • 系统支持并允许实时活动时,可在锁屏查看亲喂或睡眠并直接完成记录 • 今日快捷栏直接记录体温;其他体征可在体征页按需选择 • 记录自己设置的每日补充剂计划,并区分已服用、已跳过与尚未记录 纸质护理单,核对后保存 • 拍摄或选择已经适配的护理单,可使用在线识别,也可切换到本地识别 • 按待处理、喂养和尿布筛选识别结果,逐项核对、修改或排除 • 只有你确认过的内容才会导入记录,并保留对应的来源图片 • 可选择通过个人 iCloud 私有数据库,在自己的设备之间同步资料 在线识别需要联网并按次使用,可以通过 App Store App 内购买补充次数。 喂养间隔由你自行设置。奶量参考用于准备奶液,实际喂养回应宝宝的饥饱信号;加水量、奶粉克数和勺数遵照具体产品包装。知子安不提供诊断、治疗或用药剂量建议。 隐私政策:https://zhizian.com/privacy 使用条款:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: DAVID Ovulation Tracker at none against 知子安's 2. DAVID Ovulation Tracker also leads on iOS requirement (11.0 vs 17.0). 知子安's advantage is update cadence (every 6 days vs monthly). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 知子安 sells 2 one-off in-app purchases. DAVID Ovulation Tracker asks for nothing beyond the download.
DAVID Ovulation Tracker ships an update monthly, 知子安 every 6 days. The most recent releases landed on November 3, 2026 and October 29, 2026 respectively.
| Parameter | DAVID Ovulation Tracker | 知子安 |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 19.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 122 MB | 105 MB |
| Age rating | 12+ | 4+ |
| Developer | 婕 李 | 军杰 王 |
In-app purchases
DAVID Ovulation Tracker
No in-app purchases
知子安
- 在线识别 28 次$0.99
- 在线识别 98 次$3.99









