# OFI vs Skillion

The clearest difference is in-app purchases: OFI at none against Skillion's 14. OFI also leads on iOS requirement (8.1 vs 16.4). Skillion's advantage is update cadence (every 3 weeks vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Skillion sells 14 in-app purchases, starting at $6.00 per month. OFI asks for nothing beyond the download.

OFI ships an update every 4 months, Skillion every 3 weeks. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | OFI | Skillion |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 180 MB | 99 MB |
| Requires iOS | **8.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stiefel Magyarorszag Terkepkiado Vizualtechnikai es Taneszkozkereskedelmi KFT](https://appshunter.io/developer/1031250479) | [Skillion Kft.](https://appshunter.io/developer/1851997357) |

## What reviewers say

### OFI

[App page](https://appshunter.io/ios/app/ofi/id1031250480)

This app offers a new kind of digital school atlas, presenting information through 3D models, augmented reality, and interactive content. It aims to enhance learning with modern technology while reducing paper usage and keeping content up-to-date.

**Highlights:** 3D digital atlas content, Augmented reality learning, Interactive educational features, Reduces paper usage, Regularly updated content

**Features:** macOS Compatibility

**In-app purchases:** none


### Skillion

[App page](https://appshunter.io/ios/app/skillion-study-smarter/id6755111485)

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Minimalist Package Monthly | $6.00 | per month |
| Normal Package Monthly | $6.00 | per month |
| Plus Package Monthly | $13.00 | per month |
| Minimalist Package Semester | $22.99 | per 6 months |
| Pro Package Monthly | $24.00 | per month |
| Normal Package Annual | $36.00 | per year |
| Normal Package Semester | $49.99 | per 6 months |
| Pro Package Semester | $79.99 | per 6 months |
| Plus Package Annual | $80.00 | per year |
| Pro Package Annual | $129.99 | per year |
| Document Upload +750 | $4.00 | one-time |
| Credit +1000 | $4.00 | one-time |
| Visualization +2 | $4.00 | one-time |
| Presentation +2 | $4.00 | one-time |


## Frequently asked questions

### Is OFI free?

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

### Is Skillion free?

Skillion is free to download, with in-app purchases available.

### Do OFI or Skillion have ads?

Neither OFI nor Skillion shows ads.

### Which is updated more often, OFI or Skillion?

OFI ships an update every 4 months, and Skillion every 3 weeks. Most recently, OFI was updated on October 3, 2026 and Skillion on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*