Number Shield vs Robo Shield
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Number Shield
Block unwanted calls and texts from scammers who use fake phone numbers. Easily block entire groups of similar numbers using wildcards. Your contacts are always safe, and blocked calls go to voicemail.
- Block similar numbers with wildcards
- Block international numbers
- Contacts automatically allowed
- Block from missed calls screen
- Send blocked calls to voicemail
- Send blocked texts to Junk filter
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Block annoying scammers who hide behind fake phone numbers. Do you get unwanted calls or text messages from phone numbers similar to your own? With Number Shield, block an entire group of numbers at once. Just enter a wildcard for each digit you want to block. For example, if your number is 714-555-1234, scammers might use a number like 714-555-6789. Block all similar numbers by entering 714-555-####. Wildcards and numbers can be combined in any order you choose. Block international numbers, too! To make sure you don't miss calls from your family and friends, phone numbers in your contacts are always allowed. Block numbers directly from your phone's missed calls screen. Just follow these steps: 1. Tap the “ i ” button next to the missed call. 2. Tap “Share Contact”. 3. Tap “Block Similar Numbers”. (If you don't see this action, tap “Edit Actions...“ to enable it.) 4. Now you'll see the Number Shield number entry screen. Tap “Done” to block calls from similar numbers. Please note: • Each number pattern can contain up to 7 wildcards, and up to 50,000,000 phone numbers can be blocked. • Blocked calls are sent directly to voice mail. • Blocked text messages are sent to the “Junk” filter in the Messages app. • iMessage messages are not blocked. • When “Do Not Disturb” is enabled on your phone, calls that should be blocked may appear in your phone's list of missed calls. More information about caller ID spoofing in the United States is available from the FCC: https://www.fcc.gov/spoofing
Robo Shield
This app uses artificial intelligence to screen incoming calls, distinguishing legitimate calls from spam, robo callers, and scams. It acts as a personal call assistant, identifying unknown callers and providing detailed information about each call.
- AI-powered call screening
- Identifies spam, unverified, and verified calls
- Advanced Caller ID with call categorization
- Message filtering for spam and unsafe links
- Spam-free voicemail inbox
- Phone number lookup
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RoboShield uses AI to intelligently screen incoming calls to separate the important, legitimate calls from scams, robo callers, and other unwanted calls. Robo Shield is your personal call assistant that can answer unknown callers and ask them to identify themselves and the reason for the call. Note: RoboShield is a premium service that requires a subscription to access all features. A 14-day free trial is available for all new users to experience the full protection before the subscription begins. TOP CALL-BLOCKING FEATURES (Subscription Required): RoboShield works with ATT, T-Mobile, Verizon and many other phone carriers (included below) to handle unknown callers so setup is easy and can be done in minutes. Our advanced AI algorithms contain industry-leading call-blocking features, to categorize calls as: - Verified: legitimate, safe call with a known person - Unverified: call with an unknown intention but no identified as spam - Spam: likely a spam call RoboShield also gets you an advanced Caller ID for each unknown call that will be forwarded to you: - Call category (i.e. spam, unverified, verified) - Caller ID: automatically identifies most callers' names - Transcription of the caller's message with AI Call Assistant - Based on the call screening categories, you can also configure Call Assistant to send certain callers directly to voicemail or to connect with you Additional Features include: - Spam-free Voicemail Inbox: optional alternative voicemail Inbox, where spam messages are ID'd automatically, so you don't have to spend time reading it - Voicemail recording and transcriptions - Phone number lookup for any received unknown call (with a +1 country code) - Call details for every unknown call screened MESSAGES PROTECTION (Subscription Required): RoboShield can also filter messages for known spam and unsafe links in the message. Risky messages are placed in the junk folder or review and/or removal. Use the power of RoboShield's AI Spam detection and prevention to block and remove unwanted calls and texts while keeping the real conversations going. List of supported carriers: - Top carriers like ATT, T-Mobile, and Verizon - TracFone - Cricket - Mint - Visible - xFinity - Spectrum PREMIUM SUBSCRIPTION INFORMATION: RoboShield is a paid-only service. Your subscription includes a 14-day free trial. After the trial period, your account will be charged for the subscription (Monthly or Yearly) unless canceled. You can manage and cancel your subscription in your iTunes Account Settings. Terms of Service: https://www.roboshield.com/robo-shield-license-and-terms-of-service/ Privacy Policy: https://www.roboshield.com/robo-shield-privacy-introduction/ Reviewer Notes (App Store Connect) When you resubmit, you must address the reviewer directly to show you have complied: "Regarding Guideline 2.3.2: We have updated the App Description to clearly state that RoboShield is a premium service requiring a subscription. We have explicitly mentioned the 14-day free trial at the very top of the description to ensure users are fully informed before downloading. All features are now correctly labeled as requiring a subscription."
Screenshots
Verdict
The clearest difference is price: Robo Shield at Free against Number Shield's $2.99. Robo Shield also leads on device support (3 vs 1). Number Shield's advantage is rating (4.5 vs 2.8) and in-app purchases (none vs 6). 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
Robo Shield is free to download; Number Shield costs $2.99 up front. Robo Shield sells 6 in-app purchases, starting at $2.99 per month. Number Shield asks for nothing beyond the download.
Number Shield holds the better App Store score, 4.5 against 2.8. That said, the two scores are not equally well evidenced: Number Shield has 1.9K ratings behind it against 55, so its average is the more settled of the two. Written reviews point the same way: 50% of Number Shield's written reviews are positive against 17% of Robo Shield's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | Number Shield | Robo Shield |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.5 (1.9K ratings) — better | 2.8 (55 ratings) |
| Positive reviews | 50.3% of reviews — better | 16.5% of reviews |
| Number of ratings | 1.9K — better | 55 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Best chart rank | #44 — better | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 9 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Kinnaman Software LLC | AnchorFree Inc. |
Customer experience
Number Shield
Robo Shield
User reviews
Number Shield
From 1.9K App Store ratingsWhat we love
- 🚀 Blocks calls effectively
- 👍 Simple and easy to use
- 🔒 Protects from spam calls
- 💡 Allows blocking entire area codes
- ⭐ Works as expected
Room to improve
- 🐛 Crashes or freezes
- 🔍 Limited number of numbers that can be blocked
- 🤔 Doesn't always block all spam calls
- 🤷♀️ Doesn't block text messages
- ⚠️ Lacks customer support
Robo Shield
From 55 App Store ratingsWhat we love
- 🚀 Works well to block spam calls
- 🔒 Provides detailed caller information
- 👍 Useful feature to mark and block spam numbers
Room to improve
- 🐛 App crashes or shows blank screen
- 🔒 Concerns about privacy and data usage
- 👎 Subscription required for full functionality
- 💤 Does not automatically block all spam calls
Bugs and requests
Number Shield
Reported bugs
4 issues- App freezes when adding new numbers
- Blocked numbers still receive calls
- Database errors cause app to malfunction
- Compatibility issues with newer iOS versions
Requested features
5 requests- Add ability to block text messages
- Increase number of numbers that can be blocked
- Improve stability and reduce crashes
- Add option to block entire country codes
- Provide better customer support
Robo Shield
Reported bugs
3 issues- Subscription issues and inability to access premium features
- Inconsistent performance, with app randomly turning off blocking
- Compatibility problems with newer iOS versions
Requested features
3 requests- Ability to block calls from specific area codes
- Improved customer support and responsiveness
- Automatic spam call blocking without user intervention
In-app purchases
Number Shield
No in-app purchases
Robo Shield
- Robo Shield Premium7 Days trial$2.991 Month
- Robo Shield Premium$2.991 Month
- Robo Shield Premium14 Days trial$4.991 Month
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- Premium Subscription$12.991 Month
- Premium Robo Call Blocker7 Days trial$12.991 Month
- Robo Shield Premium14 Days trial$39.991 Year
Questions
Is Number Shield free?
Is Robo Shield free?
Which has better reviews, Number Shield or Robo Shield?
Do Number Shield or Robo Shield have ads?
Which is updated more often, Number Shield or Robo Shield?
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