# Promethean vs Lostant Comets

The clearest difference is update cadence: Lostant Comets at monthly against Promethean's every 4 months. Promethean's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Promethean ships an update every 4 months, Lostant Comets monthly. Both last shipped on November 13, 2026.

## The numbers

| Metric | Promethean | Lostant Comets |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (61 ratings)](https://appshunter.io/ios/app/promethean/id1447288595/reviews)** | — |
| Number of ratings | **61** | — |
| Positive reviews | 17.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 66 MB | 144 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Promethean](https://appshunter.io/developer/321367877) | [Lostant Community Unity School District](https://appshunter.io/developer/1498470349) |

## What reviewers say

### Promethean

[App page](https://appshunter.io/ios/app/promethean/id1447288595)

This app facilitates classroom collaboration by allowing students and teachers to interact with interactive panels wirelessly. IT administrators can also manage panel enrollment and updates. It offers screen sharing and access to training resources.

**Highlights:** Wireless screen sharing, Panel management for IT admins, Access to training materials, Student-teacher interaction, Panel enrollment and naming

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

**In-app purchases:** none


### Lostant Comets

[App page](https://appshunter.io/ios/app/lostant-comets/id6800418655)

**In-app purchases:** none


## Frequently asked questions

### Is Promethean free?

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

### Is Lostant Comets free?

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

### Do Promethean or Lostant Comets have ads?

Neither Promethean nor Lostant Comets shows ads.

### Which is updated more often, Promethean or Lostant Comets?

Promethean ships an update every 4 months, and Lostant Comets monthly. Most recently, Promethean was updated on November 13, 2026 and Lostant Comets on November 13, 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.*