# Coradius Teach vs RDS Math

The clearest difference is update cadence: RDS Math at every 5 weeks against Coradius Teach's every 15 months. RDS Math also leads on iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Coradius Teach ships an update every 15 months, RDS Math every 5 weeks. The most recent releases landed on September 26, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Coradius Teach | RDS Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 weeks** |
| Size | 4 MB | 36 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Surya Pratap Singh](https://appshunter.io/developer/1342425167) | [DIGITOPPER SOLUTIONS PRIVATE LIMITED](https://appshunter.io/developer/1506789395) |

## What reviewers say

### Coradius Teach

[App page](https://appshunter.io/ios/app/coradius-teach/id6745438349)

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

**In-app purchases:** none


### RDS Math

[App page](https://appshunter.io/ios/app/rds-math/id6758041173)

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

**In-app purchases:** none


## Frequently asked questions

### Is Coradius Teach free?

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

### Is RDS Math free?

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

### Do Coradius Teach or RDS Math have ads?

Neither Coradius Teach nor RDS Math shows ads.

### Which is updated more often, Coradius Teach or RDS Math?

Coradius Teach ships an update every 15 months, and RDS Math every 5 weeks. Most recently, Coradius Teach was updated on September 26, 2026 and RDS Math on September 27, 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.*