# Thorium vs Scolago

The clearest difference is review sentiment: Thorium at 67% against Scolago's 27%. Thorium also leads on iOS requirement (8.2 vs 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Thorium | Scolago |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/thorium/id653964281/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **66.7% of reviews** | 26.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 1 MB | 56 MB |
| Requires iOS | **8.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YoctoPlay](https://appshunter.io/developer/337781260) | [Scolago Innovation Inc.](https://appshunter.io/developer/1579075645) |

## What reviewers say

### Thorium

[App page](https://appshunter.io/ios/app/thorium/id653964281)

Explore the potential of thorium as an energy source. This educational app uses videos to explain nuclear fission and contrast thorium-based reactors with current energy technologies like solar and wind.

**Highlights:** Thorium energy transformation explained, Nuclear fission concepts, Molten Salt Reactor (MSR) comparison, Contrast with current energy sources, Educational video series

**Features:** macOS Compatibility

**In-app purchases:** none


### Scolago

[App page](https://appshunter.io/ios/app/scolago/id1460464015)

This service connects school staff with substitute teachers for seamless replacement reservations. It offers a free, modern, and efficient platform to manage absences and find available candidates, eliminating the need for stressful phone calls or expensive agencies.

**Highlights:** Replacement reservation, Self-service social connection, Free for staff and substitutes, Expand candidate pool, Efficient platform, Accessible anytime

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

**In-app purchases:** none


## Frequently asked questions

### Is Thorium free?

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

### Is Scolago free?

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

### Do Thorium or Scolago have ads?

Neither Thorium nor Scolago shows ads.

### Which is updated more often, Thorium or Scolago?

Thorium ships an update every 2 months, and Scolago every 2 months. Most recently, Thorium was updated on October 11, 2026 and Scolago on October 17, 2026.

---

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