# Zervis vs callever.io

The clearest difference is ads: Zervis at none against callever.io's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Zervis | callever.io |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Size | 91 MB | 67 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zer A.Ş.](https://appshunter.io/developer/1068536184) | [Celal Erat](https://appshunter.io/developer/1889900650) |

## What reviewers say

### Zervis

[App page](https://appshunter.io/ios/app/zervis/id1604006707)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### callever.io

[App page](https://appshunter.io/ios/app/calleverio/id6761486089)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Zervis free?

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

### Is callever.io free?

callever.io is free to download, with no in-app purchases.

### Do Zervis or callever.io have ads?

callever.io shows ads; Zervis does not.

### Which is updated more often, Zervis or callever.io?

Zervis ships an update every 5 weeks, and callever.io every 5 weeks. Most recently, Zervis was updated on November 7, 2026 and callever.io on October 31, 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.*