# THSG Smart vs Citofon

The clearest difference is update cadence: Citofon at every 4 weeks against THSG Smart's every 20 months. THSG Smart's advantage is iOS requirement (13.0 vs 15.1). 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.

THSG Smart ships an update every 20 months, Citofon every 4 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | THSG Smart | Citofon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 4 weeks** |
| Size | 177 MB | 78 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DISTRIBUIDORA LOS ROBLES SPA](https://appshunter.io/developer/1828683940) | [Alain Trouve](https://appshunter.io/developer/1657470020) |

## What reviewers say

### THSG Smart

[App page](https://appshunter.io/ios/app/thsg-smart/id1527468361)

**In-app purchases:** none


### Citofon

[App page](https://appshunter.io/ios/app/citofon/id6444867986)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is THSG Smart free?

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

### Is Citofon free?

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

### Do THSG Smart or Citofon have ads?

Neither THSG Smart nor Citofon shows ads.

### Which is updated more often, THSG Smart or Citofon?

THSG Smart ships an update every 20 months, and Citofon every 4 weeks. Most recently, THSG Smart was updated on October 29, 2026 and Citofon 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.*