# OTL vs SkyPen

The clearest difference is iOS requirement: SkyPen at 12.0 against OTL'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.

OTL ships an update every 5 weeks, SkyPen every 2 months. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | OTL | SkyPen |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 92.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 115 MB | 34 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [SPARCS](https://appshunter.io/developer/1687472027) | [招途 莫](https://appshunter.io/developer/1768523421) |

## What reviewers say

### OTL

[App page](https://appshunter.io/ios/app/otl/id1579878255)

Easily search for all courses, view your daily schedule at a glance, and get notified about important academic dates. Organize your next semester's timetable, compare various metrics, and read and rate course reviews.

**Highlights:** Course search and filtering, Daily schedule overview, Academic event notifications, Timetable creation and comparison, Course review reading and rating, Personalized academic information

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

**In-app purchases:** none


### SkyPen

[App page](https://appshunter.io/ios/app/skypen/id6743663942)

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

**In-app purchases:** none


## Frequently asked questions

### Is OTL free?

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

### Is SkyPen free?

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

### Do OTL or SkyPen have ads?

Neither OTL nor SkyPen shows ads.

### Which is updated more often, OTL or SkyPen?

OTL ships an update every 5 weeks, and SkyPen every 2 months. Most recently, OTL was updated on October 7, 2026 and SkyPen on October 10, 2026.

---

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