# DURMI Smart vs S4C

DURMI Smart and S4C are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

DURMI Smart ships an update every 2 months, S4C monthly. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | DURMI Smart | S4C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 30 MB | 35 MB |
| Requires iOS | 13.0 | **12** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Teleco Automation Srl](https://appshunter.io/developer/1194390467) | [SUTO iTEC (China) Co. Ltd](https://appshunter.io/developer/1511502112) |

## What reviewers say

### DURMI Smart

[App page](https://appshunter.io/ios/app/durmi-smart/id1462635275)

**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 DURMI Smart free?

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

### Is S4C free?

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

### Do DURMI Smart or S4C have ads?

Neither DURMI Smart nor S4C shows ads.

### Which is updated more often, DURMI Smart or S4C?

DURMI Smart ships an update every 2 months, and S4C monthly. Most recently, DURMI Smart was updated on October 26, 2026 and S4C 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.*