Spam Call Blocker vs Must Ring
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spam Call Blocker
This app helps you manage unwanted calls by allowing you to create custom blacklists and whitelists. Block specific numbers or entire number segments to avoid spam and robocalls, while ensuring important calls are never missed. It also supports iCloud backup for seamless device switching.
- Custom blacklists and whitelists
- Block number segments
- Block up to 1 million numbers
- Add numbers from recent calls
- iCloud Auto Backup
- Block cell and landline numbers
Read full descriptionHide full description
Spam Call Blocker enables you to set a number blacklist and a whitelist to save your time. You can easily block spam calls and robocalls by adding their numbers into the blacklist. Moreover, if you want to block a certain number segment, you can also add the number segment to blacklist, which means you can block up to 1 million similar robocalls in a few clicks. For your convenience, you can directly open 95 blocking to block all numbers which start with 95. You won’t be annoyed by the similar robo number anymore! When there is an important number, you can list it in the whitelist so that you won’t miss any legitime calls and text messages. iCloud Auto Backup is also supported so that the blacklist/whitelist information is stored and you can seamlessly switch to other devices with convenience. With Spam Call Blocker, you can: - Set Blacklist to block a certain number or a number segment. - Set Whitelist to allow legitime calls to not miss important calls and text messages. - Add a certain number segment to blacklist so that you can block up to 1 million numbers simultaneously. - Add phone numbers to blacklist from recent calls to avoid the frequent calls from the same number. - Open iCloud Auto Backup and seamlessly switch to other devices with convenience. - Add numbers to blacklist from your contacts. - Manage your blacklist and whitelist by adding notes and deleting numbers. - Block multiple call types, including cell phone numbers, landline numbers or other certain numbers. - Block all numbers which start with 95. Blacklist Unwanted Calls - Add a certain number segment to blacklist so that you can block up to 1 million numbers simultaneously. - Add phone numbers to blacklist from recent calls to avoid the frequent calls from the same number. - Block multiple call types, including cell phone numbers, landline numbers or other certain numbers. Whitelist Important Calls - Set Whitelist to allow legitime calls to not miss important calls and text messages. - Set the company numbers of operators, banks, express delivery, etc. included in the blocked number segment as whitelist numbers so that important information is not missed. Tips - Spam Call Blocker supports iOS 11.0 or later. - You will not receive any call notification from the blocked number. You will be responsible for any loss caused by falsely rejected or missed calls. Please add it carefully. - You can set a whitelist number or number segment, but the whitelist you set takes effect only in this application. If there are other phone blocking applications installed on your phone, please synchronize to set the whitelist in other applications. Common Problems: 1. I have purchased the pro version, but I’m required to buy it again? -> Please click [Restore Previous Purchase]. If it fails, please try to change your network or turn on the VPN, and make sure that the used apple ID is the same as the one used for purchase. 2. Why can’t I see the option of Spam Call Blocker in [Call Blocking & Identification]? -> Please check if you have installed other call blocker software at the same time. It is recommended to uninstall other software and reinstall Spam Call Blocker. 3. Why is an error message prompted when setting the blocking rule? -> Please check the user guide and check whether you enter special characters or enter more than 6 wildcards. 4. Why still receive spam calls after setting blocking rules? 1). Check whether there are other software options besides Spam Call Blocker in [Call Blocking & Identification], and click the [Edit] button in the upper right corner to move Spam Call Blocker to the top. 2). Try to add your other mobile phone number or the number segment of your friend's mobile phone number and call. 3). If the above operations do not solve the problem, please uninstall and reinstall Spam Call Blocker and try again. Choose Spam Call Blocker and meet a life without annoying spam calls and robocalls. Save your time to create more value.
Must Ring
Read full descriptionHide full description
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 iOS requirement: Spam Call Blocker at 14.0 against Must Ring's 26.1. On price, ads, in-app purchases 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. Spam Call Blocker sells 1 one-off in-app purchase and Must Ring sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Spam Call Blocker | Must Ring |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (7 ratings) — better | — |
| Positive reviews | 36.4% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 3 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Solid PDF Ltd | 大胜 纪 |
In-app purchases
Spam Call Blocker
- Permanent License$0.99
Must Ring
- Must Ring Unlock$14.99









