# Skill Series vs BOSAD

The clearest difference is iOS requirement: Skill Series at 11.0 against BOSAD's 15.1. 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.

Skill Series ships an update every 10 days, BOSAD every 3 weeks. The most recent releases landed on September 8, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Skill Series | BOSAD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 78 MB | 51 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [UpSurgeOn](https://appshunter.io/developer/1193542467) | [Ermias Temesgen](https://appshunter.io/developer/1731638338) |

## What reviewers say

### Skill Series

[App page](https://appshunter.io/ios/app/skill-series/id1642351463)

Learn and practice essential surgical techniques like microsurgery and anastomoses through guided exercises and video tutorials. This app is specifically designed for medical students and surgery residents to hone their skills.

**Highlights:** Microsurgery exercises, Anastomoses practice, Macrosurgery training, Video tutorials, Skill development

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

**In-app purchases:** none


### BOSAD

[App page](https://appshunter.io/ios/app/bosad/id6478068016)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Skill Series free?

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

### Is BOSAD free?

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

### Do Skill Series or BOSAD have ads?

Neither Skill Series nor BOSAD shows ads.

### Which is updated more often, Skill Series or BOSAD?

Skill Series ships an update every 10 days, and BOSAD every 3 weeks. Most recently, Skill Series was updated on September 8, 2026 and BOSAD on September 12, 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.*