# ViewCaller vs Shadow SISB

The clearest difference is in-app purchases: Shadow SISB at none against ViewCaller's 8. Shadow SISB also leads on iOS requirement (13.0 vs 15.0). ViewCaller's advantage is update cadence (every 3 weeks vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. ViewCaller sells 7 in-app purchases, starting at $2.99 per month. Shadow SISB asks for nothing beyond the download.

ViewCaller ships an update every 3 weeks, Shadow SISB every 6 months. The most recent releases landed on October 26, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | ViewCaller | Shadow SISB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (796 ratings)](https://appshunter.io/ios/app/viewcaller-caller-id/id1488464489/reviews)** | — |
| Number of ratings | **796** | — |
| Positive reviews | 18.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 28 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SMART MEDIA INTERNET MARKETING LTD](https://appshunter.io/developer/718353904) | [Shadow alarma](https://appshunter.io/developer/1863790793) |

## What reviewers say

### ViewCaller

[App page](https://appshunter.io/ios/app/viewcaller-caller-id/id1488464489)

Identify unknown callers and block unwanted spam calls with real-time detection. Access a global database to screen calls and manage your communication for enhanced privacy and security.

**Highlights:** Real-time spam detection, Global community insight, Customizable blocking, Enhanced caller ID, Identify callers instantly, Reverse phone lookup

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ViewCaller Monthly | $2.99 | per month |
| ViewCaller Monthly | $2.99 | per month |
| ViewCaller Weekly | $2.99 | per 7 days |
| Unlimited access | $4.99 | per month |
| ViewCaller Annual Subscription | $19.99 | per year |
| Unlimited access | $19.99 | per year |
| Unlimited access | $39.99 | per year |

**What reviewers complain about**

- ❌ Does not work
- ❌ Inaccurate results
- ❌ Useless functionality
- ❌ Fake app
- ❌ Waste of money

**Reported bugs**

- Number pad only displays 1-9
- App does not look up any numbers
- Returns 'number not available' for all lookups
- Shows other people's numbers for own number
- Shows incorrect caller ID even after updates


### Shadow SISB

[App page](https://appshunter.io/ios/app/shadow-sisb/id1587048800)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ViewCaller free?

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

### Is Shadow SISB free?

Shadow SISB is free to download, with no in-app purchases.

### Do ViewCaller or Shadow SISB have ads?

Neither ViewCaller nor Shadow SISB shows ads.

### Which is updated more often, ViewCaller or Shadow SISB?

ViewCaller ships an update every 3 weeks, and Shadow SISB every 6 months. Most recently, ViewCaller was updated on October 26, 2026 and Shadow SISB on October 4, 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.*