# Elvaco OTC vs S4C

The clearest difference is iOS requirement: S4C at 12 against Elvaco OTC's 15.0. On price, update cadence, ads and in-app purchases 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 monthly. Both last shipped on November 7, 2026.

## The numbers

| Metric | Elvaco OTC | S4C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Size | 14 MB | 35 MB |
| Requires iOS | 15.0 | **12** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Elvaco AB](https://appshunter.io/developer/1590157446) | [SUTO iTEC (China) Co. Ltd](https://appshunter.io/developer/1511502112) |

## What reviewers say

### Elvaco OTC

[App page](https://appshunter.io/ios/app/elvaco-otc/id1590157384)

**In-app purchases:** none


### S4C

[App page](https://appshunter.io/ios/app/s4c-fs/id1619076144)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Elvaco OTC free?

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

### Is S4C free?

S4C is free to download, with no in-app purchases.

### Do Elvaco OTC or S4C have ads?

Neither Elvaco OTC nor S4C shows ads.

### Which is updated more often, Elvaco OTC or S4C?

Elvaco OTC ships an update monthly, and S4C monthly. Most recently, Elvaco OTC was updated on November 7, 2026 and S4C on November 7, 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.*