# GPS SERVER SYSTEM vs CallApp

The clearest difference is in-app purchases: GPS SERVER SYSTEM at none against CallApp's 13. GPS SERVER SYSTEM also leads on ads (none vs shown) and device support (3 vs 1). CallApp's advantage is update cadence (fortnightly vs every 22 months). On price there is nothing between them.

Both are free to download. CallApp sells 8 in-app purchases, starting at $6.99 per month. GPS SERVER SYSTEM asks for nothing beyond the download.

GPS SERVER SYSTEM ships an update every 22 months, CallApp fortnightly. The most recent releases landed on September 15, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | GPS SERVER SYSTEM | CallApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (715 ratings)](https://appshunter.io/ios/app/callapp/id6739289261/reviews)** |
| Number of ratings | — | **715** |
| Positive reviews | — | 56.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 22 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 84 MB | 236 MB |
| Requires iOS | **15.6** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tamilarasan Kannan](https://appshunter.io/developer/1500116258) | [CallApp](https://appshunter.io/developer/1784700170) |

## What reviewers say

### GPS SERVER SYSTEM

[App page](https://appshunter.io/ios/app/gps-server-system/id6447580360)

**Features:** macOS Compatibility

**In-app purchases:** none


### CallApp

[App page](https://appshunter.io/ios/app/callapp/id6739289261)

Identify unknown callers and block unwanted calls with an advanced caller ID. Access a global database of billions of numbers to know who is calling before you answer. Protect your privacy and security with this powerful call management tool.

**Highlights:** Advanced caller ID, Identify unknown numbers, Block spam calls, Global number database, Privacy and security focused, Unwanted call protection

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Monthly | $9.99 | per month |
| Monthly | $9.99 | per month |
| Yearly | $29.99 | per year |
| Yearly | $29.99 | per year |
| Yearly | $39.99 | per year |
| Yearly | $39.99 | per year |
| Yearly | $59.99 | per year |


## Frequently asked questions

### Is GPS SERVER SYSTEM free?

GPS SERVER SYSTEM is free to download, with no in-app purchases.

### Is CallApp free?

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

### Do GPS SERVER SYSTEM or CallApp have ads?

CallApp shows ads; GPS SERVER SYSTEM does not.

### Which is updated more often, GPS SERVER SYSTEM or CallApp?

GPS SERVER SYSTEM ships an update every 22 months, and CallApp fortnightly. Most recently, GPS SERVER SYSTEM was updated on September 15, 2026 and CallApp on September 29, 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.*