cloud 云号 vs Must Ring
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
cloud 云号
This app provides users with a virtual phone number service, allowing them to have multiple numbers linked to their primary SIM card. It helps protect personal privacy by filtering unwanted calls and messages, especially useful for online transactions, rentals, or dating.
- Virtual phone numbers
- Privacy protection
- Call and message filtering
- Multiple numbers on one SIM
- Real phone numbers
- One-click on/off switch
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云号,您的私人号码管家,移动、电信、联通手机用户均可办理,一卡多号,实名登记,即开即用,同时待机,一键开关。 满足您在租房、装修、购物、交友、找工作等情况下杜绝骚扰,保护隐私的需求。 -----------------产品特色-------------------- 【三网通用 真实号码】 支持移动、电信、联通手机用户绑定使用,云号为真实的手机号码 【一卡多号 轻松换号】 一张主卡可绑定多个云号,实名登记,无需换卡换终端 【号码保护 安全沟通】 保护主号隐私,一键开关机杜绝骚扰
Must Ring
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Must Ring is for the handful of things that cannot be missed — medication, picking someone up, the one task that has to happen today. Not a to-do list. Not a habit tracker. Just the few alarms that have to land, and an honest record of whether they did. RINGS THROUGH SILENT AND FOCUS Built on Apple's AlarmKit, so it rings full-screen like the system alarm — Silent on, any Focus mode, after the app is closed, after a restart. Two buttons on the Lock Screen: Done, or Snooze. IF NOBODY ANSWERS, SOMEONE GETS TOLD Set a delay. If the alarm still isn't confirmed after it, Must Ring sends a message to the contact you chose — so a missed dose doesn't pass in silence. You decide what they see. EVERY RING LEAVES A TRACE Done, done after snooze, skipped, unconfirmed, never delivered — each one is written down with its time and where you answered it (Lock Screen, widget or in the app). You can always tell "I forgot" apart from "it never rang". TEN TEMPLATES, THREE FIELDS Medication, meeting, pickup, errand, birthday, anniversary and more. Pick one, set the time, set the repeat. Lead time from 5 minutes up to a week. IN CHINA: STATUTORY WORKDAYS A work alarm can follow the official holiday calendar — it rings on make-up workdays and stays quiet on public holidays. A WIDGET THAT ANSWERS THE QUESTION What's next, how long is left, how today is going — on the Home Screen, without opening anything. PRIVATE BY DEFAULT Everything stays on your iPhone. No account, no sign-in, no server, no profiling. FREE TO START Same-day alarms always work, and so does the basic record — free, no account. A one-time purchase unlocks unlimited alarms, the template pack, escalation to a contact and full export. No subscription. Must Ring does not provide medical advice and is not a medical device. Always follow your prescriber's instructions.
Screenshots
Verdict
The clearest difference is in-app purchases: cloud 云号 at none against Must Ring's 1. cloud 云号 also leads on iOS requirement (11.0 vs 26.1). Must Ring's advantage is update cadence (fortnightly vs every 4 months). 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. Must Ring sells 1 one-off in-app purchase. cloud 云号 asks for nothing beyond the download.
cloud 云号 ships an update every 4 months, Must Ring fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | cloud 云号 | Must Ring |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 28 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | China United Network Communications Corporation Limited | 大胜 纪 |
In-app purchases
cloud 云号
No in-app purchases
Must Ring
- Must Ring Unlock$14.99









