地震预警 vs Ruler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
地震预警
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地震预警App是一款能在地震发生前提前通知用户的应用。它能够: 1. **实时监测地震**:持续监测地震活动。 2. **发送警报**:一旦检测到地震,立即向用户发送警报。 3. **提供安全建议**:告诉用户如何在地震发生时保护自己。 4. **记录地震历史**:记录地震活动,帮助用户了解地震模式。 5. **用户定制设置**:用户可以根据自己的需要定制警报设置。 这款App可以帮助用户提前做好准备,降低地震可能造成的损失。订阅相关: 1、 用户只有在通过付费订阅后才可以无限次使用预警地震等功能; 2、订阅费用会在用户确认购买时从 iTunes 账户扣除,可自动续订 3、用户可在当前订阅结束 24 小时前关闭自动续订,否则将自动续订; 4、自动续期订阅的 Apple ID,会在每个账单周期到期前24小时,自动在iTunes账户扣费并延长相应有效期; 5、用户对订阅服务进行管理,即购买后可以前往用户账户设置关闭自动订阅。 用户协议: https://docs.qq.com/doc/DRlpFbVdMVkhQV2NV 隐私政策: https://docs.qq.com/doc/DRnZocXd5dmFJWnJU
Ruler
Transform your phone into a precise measuring tool. Accurately measure objects, surfaces, and distances using your screen or camera. Ideal for home, work, or on-the-go tasks, providing quick and reliable measurements.
- Measure objects on screen
- Switch between units (cm, mm, inches)
- Save and share measurements
- Easy-to-use interface
- Accurate and fast measurements
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Turn your phone into a powerful measuring device with our app. Measure objects, surfaces, and distances precisely using your screen or camera. Whether you’re at home, at work, or on the go — our product gives you accurate measurements in seconds. Main Features: • Measure objects directly on your screen • Switch between units (cm, mm, inches) • Save and share your measurements • Sleek and easy-to-use interface Why You’ll Love It: • Always have a ruler in your pocket • Ideal for DIY, design, school, or daily use • Accurate, fast, and convenient Subscription Details: • Weekly Plan: $4.99/week • Yearly Plan: $19.99/year with a 3-day free trial Payment will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the subscription ends. Manage or cancel your subscription anytime in your iTunes Account settings. Any unused portion of a free trial will be forfeited when a subscription is purchased. Privacy Policy: https://www.icloud.com/pages/06esymWNjEpTQKyTyk7xrSiLQ#Blank Terms of Use: https://www.icloud.com/pages/0b4ufgCLIPuBpn14hhoiELQOA#Blank_3
Screenshots
Verdict
The clearest difference is iOS requirement: 地震预警 at 13.0 against Ruler's 16.0. On price and in-app purchases 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. 地震预警 sells 3 in-app purchases, starting at $9.99 per month and Ruler sells 7 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
| Parameter | 地震预警 | Ruler |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Number of ratings | — | 5 — better |
| Update frequency | — | Every 2 days |
| Ads | — | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Subscription |
| Devices | — | iPhone — better |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 70 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | 树轩 魏 | Myroslav Drozd |
In-app purchases
地震预警
- VIP包月$9.991 Month
- VIP包季$29.993 Months
- VIP包年3 Days trial$39.991 Year
Ruler
- Smart Ruler3 Days trial$2.997 Days
- Smart Ruler3 Days trial$4.997 Days
- Smart Ruler3 Days trial$6.997 Days
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- Smart Ruler$9.991 Year
- Smart Ruler$14.991 Year
- Smart Ruler$19.991 Year
- Smart Ruler$24.991 Year









