# Number Shield vs Robo Shield

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.

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.

## The numbers

| Metric | Number Shield | Robo Shield |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.5 (1.9K ratings)](https://appshunter.io/ios/app/number-shield/id1319082167/reviews)** | [2.8 (55 ratings)](https://appshunter.io/ios/app/robo-shield-ai-spam-filter/id1454299300/reviews) |
| Number of ratings | **1.9K** | 55 |
| Positive reviews | **50.3% of reviews** | 16.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Subscription |
| Best chart rank | **#54** | — |
| Size | 9 MB | 39 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kinnaman Software LLC](https://appshunter.io/developer/679806187) | [AnchorFree Inc.](https://appshunter.io/developer/309076084) |

## What reviewers say

### Number Shield

[App page](https://appshunter.io/ios/app/number-shield/id1319082167)

**Currently charting:** #54 Top Paid · Utilities (US App Store)

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.

**Highlights:** 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

**In-app purchases:** none

**What reviewers like**

- 🚀 Blocks calls effectively
- 👍 Simple and easy to use
- 🔒 Protects from spam calls
- 💡 Allows blocking entire area codes
- ⭐ Works as expected

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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**

- 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

[App page](https://appshunter.io/ios/app/robo-shield-ai-spam-filter/id1454299300)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Robo Shield Premium | $2.99 | per month |
| Robo Shield Premium | $2.99 | per month |
| Robo Shield Premium | $4.99 | per month |
| Premium Subscription | $12.99 | per month |
| Premium Robo Call Blocker | $12.99 | per month |
| Robo Shield Premium | $39.99 | per year |

**What reviewers like**

- 🚀 Works well to block spam calls
- 🔒 Provides detailed caller information
- 👍 Useful feature to mark and block spam numbers

**What reviewers complain about**

- 🐛 App crashes or shows blank screen
- 🔒 Concerns about privacy and data usage
- 👎 Subscription required for full functionality
- 💤 Does not automatically block all spam calls

**Reported bugs**

- Subscription issues and inability to access premium features
- Inconsistent performance, with app randomly turning off blocking
- Compatibility problems with newer iOS versions

**Requested features**

- Ability to block calls from specific area codes
- Improved customer support and responsiveness
- Automatic spam call blocking without user intervention


## Frequently asked questions

### Is Number Shield free?

Number Shield costs $2.99, with no in-app purchases.

### Is Robo Shield free?

Robo Shield is free to download, with in-app purchases available.

### Which has better reviews, Number Shield or Robo Shield?

Number Shield is rated higher. Number Shield averages 4.5 out of 5 from 1.9K ratings, while Robo Shield averages 2.8 from 55 ratings.

### Do Number Shield or Robo Shield have ads?

Neither Number Shield nor Robo Shield shows ads.

### Which is updated more often, Number Shield or Robo Shield?

Number Shield ships an update every 2 months, and Robo Shield every 2 months. Most recently, Number Shield was updated on October 29, 2026 and Robo Shield on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*