倒数日 · Days Matter vs 错题本
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
倒数日 · Days Matter
This app helps you track important dates, from birthdays and anniversaries to deadlines and personal milestones. It offers extensive date range support, cloud synchronization, and customizable categories to keep your memories and tasks organized. Features include historical date lookups and a built-in calculator.
- Countdown/count up to any date
- Cloud synchronization
- Lunar calendar support
- Customizable categories
- Historical dates
- Date calculator
- Password protection
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-=App Store 中国免费排行榜 Top 1=- 「倒数日 · Days Matter」是一个帮你记录生活中重要日子的小工具，例如:恋人生日还有多少天？还信用卡还有多少天？发工资还有多少天？宝宝出生已经多少天？距离世界末日还有多少天…… =主要功能= · 万年支持：支持从公元元年 1 月 1 日到公元 9999 年 12 月 31 日的倒数/正数日期，你可以计算诸如美国独立多少日、与女朋友交往多少日、宝宝出生多少日…… · iCity 云端同步：保护你的重要资料 · 农历支持：支持从 1901 年至 2049 年的农历日期 · 通知中心挂件、Apple Watch & iMessage App · 三种默认分类：纪念日、工作、生活，支持自定义更多分类 · 历史上的今天与明天 · 日期计算器 · 自定义事件背景 · 高级功能：密码保护，通过 Face ID / Touch ID 解锁 欢迎反馈你的需求给我们 ^_^ Clover 四叶新媒体荣誉出品 ———— 关于程序内提供的「按月订阅」功能： 您可以在程序内使用 iTunes 自动续订功能获取会员专属功能，我们提供「每月 CNY ¥3」套餐。 确认购买后，将会从您的 iTunes 帐户中收取费用。您可以在每个周期结束至少 24 小时前取消下个周期的订阅，每个周期结束 24 小时内将会自动续订，已订阅的周期将无法取消。 隐私保护政策：https://clover.ly/privacy 用户使用协议：https://m.icity.ly/tos
错题本
This learning tool helps students and parents efficiently manage incorrect answers from homework and tests. It uses advanced technology to quickly capture, organize, and review mistakes, making studying smarter and more effective.
- Photo capture of incorrect answers
- Automatic removal of handwriting
- Subject-based categorization
- Detailed breakdown of questions and solutions
- Custom practice test generation
- Daily review for targeted learning
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错题本是一款专为学生和家长设计的智能学习工具，旨在解决错题整理耗时长、效率低的难题。我们通过先进的技术，让错题管理变得简单高效，助力学习更上一层楼。 主要功能： 拍错题：只需拍照上传，一键去除手写痕迹，十几秒整理一道错题，彻底告别手抄烦恼。 错题本：支持按科目分类的错题收集，每道错题分为题干、错解、正解三部分，方便复习和自测，轻松生成专属练习卷。 高效学习：每天15分钟，快速回顾错题，查漏补缺，提升成绩更轻松。 适用人群： 学生：快速整理作业和考试中的错题，强化薄弱知识点。 家长：省时省力，协助孩子高效学习，陪伴成长更轻松。 为什么选择我们？ 整理错题不再是负担！错题本用科技解放你的时间，让学习变得更智能、更高效。立即下载，体验不一样的错题管理方式！ 高级订阅： •确认购买时，将向iTunes帐户收取费用 •订阅会自动续订，除非在当前期间结束前至少24小时关闭自动续订 •帐户将在当前期间结束前24小时内收取续订费用，并确定续订费用 •订阅可以由用户管理，并且可以在购买后转到用户的帐户设置来关闭自动续订 •如果提供免费试用期，任何未使用的部分将在用户购买该出版物的订阅时被没收（如果适用） 使用条款：https://www.freeprivacypolicy.com/live/e20a5f60-cea4-4c21-9c44-a0bcdbd56f87 隐私政策：https://www.freeprivacypolicy.com/live/82c9ce4b-e2f9-4918-bb71-63a4ebfaaa10
Screenshots
Verdict
The clearest difference is rating: 倒数日 · Days Matter at 4.8 against 错题本's 4.2. 倒数日 · Days Matter also leads on ratings volume (8.2K vs 5) and update cadence (every 3 weeks vs every 2 months). 错题本's advantage is ads (none vs shown). On price, in-app purchases, monetization model 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. 倒数日 · Days Matter sells 11 in-app purchases, starting at $0.49 per month and 错题本 sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
倒数日 · Days Matter holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: 倒数日 · Days Matter has 8.2K ratings behind it against 5, so its average is the more settled of the two.
倒数日 · Days Matter ships an update every 3 weeks, 错题本 every 2 months. The most recent releases landed on September 27, 2026 and September 19, 2026 respectively.
| Parameter | 倒数日 · Days Matter | 错题本 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (8.2K ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 87.5% of reviews | — |
| Number of ratings | 8.2K — better | 5 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 259 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | iDaily Corp. | 深圳市美易网科技有限公司 |
Customer experience
倒数日 · Days Matter
错题本
Bugs and requests
倒数日 · Days Matter
Reported bugs
4 issues- Incorrect date display in widget
- Inconsistent behavior when changing phones
- Sync issues causing data loss
- Unexpected app behavior after updates
Requested features
5 requests- Add English language option
- Improve widget customization
- Provide more theme/background options
- Allow manual date entry format customization
- Implement sync with other calendar apps
错题本
Not enough reviews yet to summarise bugs or requests.
In-app purchases
倒数日 · Days Matter
- 倒数日 Pro · 月度会员7 Days trial$0.491 Month
- 倒数日相册 1000 张$0.991 Month
- 倒数日相册 2000 张$1.991 Month
Show 2 moreShow fewer
- 倒数日相册 5000 张$3.991 Month
- 倒数日相册 10000 张$6.991 Month
- 倒数日重置密码$0.99
- メールアドレスカード$2.99
- 咖啡$2.99
Show 3 moreShow fewer
- Days Matter Pro$4.99
- 银币$5.99
- 金币$14.99
错题本
- 连续包月3 Days trial$1.991 Month
- 连续包年3 Days trial$9.991 Year
