# Kalliope Phone vs Xviewer

The clearest difference is update cadence: Kalliope Phone at every 3 months against Xviewer's every 8 months. Xviewer's advantage is iOS requirement (11.0 vs 15.6). On price, ads, 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.

Kalliope Phone ships an update every 3 months, Xviewer every 8 months. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Kalliope Phone | Xviewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Size | 55 MB | 32 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kalliope srl](https://appshunter.io/developer/1108203677) | [I.D.T. SOCIETA' A RESPONSABILITA' LIMITATA SOCIETA’ BENEFIT](https://appshunter.io/developer/1654465054) |

## What reviewers say

### Kalliope Phone

[App page](https://appshunter.io/ios/app/kalliope-phone/id6449353516)

**Features:** Siri integration

**In-app purchases:** none


### Xviewer

[App page](https://appshunter.io/ios/app/xviewer/id6450307897)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kalliope Phone free?

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

### Is Xviewer free?

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

### Do Kalliope Phone or Xviewer have ads?

Neither Kalliope Phone nor Xviewer shows ads.

### Which is updated more often, Kalliope Phone or Xviewer?

Kalliope Phone ships an update every 3 months, and Xviewer every 8 months. Most recently, Kalliope Phone was updated on October 27, 2026 and Xviewer on November 3, 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.*