Coves vs 数日
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Coves
This app helps students prepare for exams by breaking down large goals into manageable tasks, scheduling study sessions, and tracking focused study time. It provides visual feedback on progress, allowing users to see which subjects need more attention and stay motivated with focus timers and white noise.
- Break down large goals into tasks
- Schedule tasks onto specific dates
- Log focused study time
- Review progress by subject
- Pomodoro and countdown timers
- White noise for focus
- Syncs with Apple Watch
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The worst part of exam prep is not working hard - it is not knowing whether you have done enough. Why do you ace physics? Because the total hours added up - quantity turned into quality. Why do the words stick? Because of those two focused hours, every day. SAT, AP, finals, bar exam, USMLE: it all comes down to one question - have you done enough? coves is the tool that records that quantity and shows it back to you. WHAT IT DOES INSTEAD OF YOU • Break down: turn one big goal (say, calculus) into tasks you can finish today • Schedule: drop those tasks onto real dates, so the plan exists before the week starts • Measure: log what you actually did - how much, how long you focused • Review: plan and reality side by side, so you see which subject is short HOW FAR YOU ARE: NUMBERS BEAT FEELING Total hours for maths, total hours for vocabulary, completion per subject - counted and shown separately. Enough quantity and the result follows. You will see it in your own numbers. WHILE YOU STUDY, IT KEEPS YOU SEATED Pomodoro, countdown, white noise - one tap and you are in focus mode. When it ends, it logs straight into the day's total. No catch-up later. Widgets and Apple Watch stay in sync. coves is the study tool for exam prep: break down, schedule, measure, review - one loop, closed. SUBSCRIPTION DETAILS coves Membership offers a monthly subscription ($2.99/month), a yearly subscription ($19.99/year), and a lifetime purchase ($29.99). Subscriptions auto-renew unless auto-renew is turned off at least 24 hours before the end of the current period. Any unused portion of a free trial period (if offered) will be forfeited when you purchase a subscription. Manage or cancel anytime in Settings > Apple ID > Subscriptions. Privacy Policy: https://www.softwindlab.com/privacy.html Terms of Use (EULA): https://www.softwindlab.com/products/coves/terms YOUR DATA STAYS YOURS No account, no ads, no analytics. We don't collect your name, phone number or location, and we never upload what you record - it stays on this device and in your own iCloud.
数日
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生日、旅行、考试、工作期限,或和某个人一起走过的日子,都可以记在「数日」里。未来的日期看倒数,过去的日期看已过天数,到了当天统一显示「就是今天」。 添加名称、日期和图标,用自定义分类整理记录;同一事件也能归入多个分类。支持按天、周、月、年和自定义间隔重复,并可设置当天通知、提前几天或几周提醒。 多种桌面与锁屏小组件,让重要日期更容易看见。还有事件归档与恢复、一次性事件过期自动归档,以及深色界面和时间状态配色。 支持简体中文和英文,核心记录功能可离线使用,无需另行注册账号。订阅续费日可以手动记录,数日不负责识别订阅、扣费或取消。
Screenshots
Verdict
The clearest difference is price: Coves at Free against 数日's $0.99. Coves also leads on device support (3 vs 1). 数日's advantage is in-app purchases (none vs 3). On update cadence, ads and iOS requirement 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
Coves is free to download; 数日 costs $0.99 up front. Coves sells 3 in-app purchases, starting at $2.99 per month. 数日 asks for nothing beyond the download.
Coves ships an update fortnightly, 数日 every 8 days. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.
| Parameter | Coves | 数日 |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.2 (11 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Fortnightly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 113 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | 朋 潘 | 敏 闵 |
In-app purchases
Coves
- Monthly$2.991 Month
- Annual$19.991 Year
- Lifetime Access$29.99
数日
No in-app purchases









