# Prometheus vs Baly4Docs

The clearest difference is in-app purchases: Prometheus at none against Baly4Docs's 1. Prometheus also leads on device support. Baly4Docs's advantage is update cadence (every 4 months vs every 16 months). On price and iOS requirement there is nothing between them.

Both are free to download. Baly4Docs sells 1 in-app purchase, starting at $9.99 per year. Prometheus asks for nothing beyond the download.

Prometheus ships an update every 16 months, Baly4Docs every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Prometheus | Baly4Docs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (16 ratings)](https://appshunter.io/ios/app/prometheus-online-courses/id1213523151/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 16 months | **Every 4 months** |
| Monetization | Freemium | — |
| Size | 35 MB | 77 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Prometheus NGO](https://appshunter.io/developer/1213523150) | [MEDYCHNY TSENTR TSYTOS, TOV](https://appshunter.io/developer/1601860983) |

## What reviewers say

### Prometheus

[App page](https://appshunter.io/ios/app/prometheus-online-courses/id1213523151)

Access a vast library of online courses from top educators in Ukraine, covering business, IT, personal development, and more. Learn new skills, gain certificates, and advance your career with this educational platform.

**Highlights:** Wide range of course topics, Free and paid course options, Learn anytime, anywhere, Downloadable lectures, Certificates for resume, Expert instructors

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

**In-app purchases:** none


### Baly4Docs

[App page](https://appshunter.io/ios/app/baly4docs/id1601860981)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Підписка на додаток Baly4Docs | $9.99 | per year |


## Frequently asked questions

### Is Prometheus free?

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

### Is Baly4Docs free?

Baly4Docs is free to download, with in-app purchases available.

### Which is updated more often, Prometheus or Baly4Docs?

Prometheus ships an update every 16 months, and Baly4Docs every 4 months. Most recently, Prometheus was updated on November 2, 2026 and Baly4Docs on November 3, 2026.

---

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