# Sero. vs Slim Effect

Sero. and Slim Effect are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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.

## The numbers

| Metric | Sero. | Slim Effect |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 35 MB | 33 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Maayan Bar Noy](https://appshunter.io/developer/1743170985) | [Arbox LTD](https://appshunter.io/developer/1021244486) |

## What reviewers say

### Sero.

[App page](https://appshunter.io/ios/app/sero/id6499319326)

**In-app purchases:** none


### Slim Effect

[App page](https://appshunter.io/ios/app/slim-effect/id6752990832)

**In-app purchases:** none


## Frequently asked questions

### Is Sero. free?

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

### Is Slim Effect free?

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

### Do Sero. or Slim Effect have ads?

Neither Sero. nor Slim Effect shows ads.

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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.*