# SkillGrader vs Unify.os

SkillGrader and Unify.os 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 | SkillGrader | Unify.os |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 52 MB | 86 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heron Skill Systems Inc](https://appshunter.io/developer/1817509517) | [Ziur Holdings, LLC](https://appshunter.io/developer/6777000248) |

## What reviewers say

### SkillGrader

[App page](https://appshunter.io/ios/app/skillgrader/id1438485986)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Unify.os

[App page](https://appshunter.io/ios/app/unifyos/id6777000246)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SkillGrader free?

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

### Is Unify.os free?

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

### Do SkillGrader or Unify.os have ads?

Neither SkillGrader nor Unify.os 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.*