# Eureka vs Yadex

The clearest difference is in-app purchases: Yadex at none against Eureka's 8. Yadex also leads on ads (none vs shown). Eureka's advantage is update cadence (every 4 days vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Eureka sells 8 in-app purchases, starting at $0.99 per 7 days. Yadex asks for nothing beyond the download.

Eureka ships an update every 4 days, Yadex every 4 months. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Eureka | Yadex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (24 ratings)](https://appshunter.io/ios/app/eureka-fast-math-solver/id6738960478/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 38 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Anastasiia Khovaeva](https://appshunter.io/developer/1716067056) | [Ali Reza Hussaini](https://appshunter.io/developer/1863945717) |

## What reviewers say

### Eureka

[App page](https://appshunter.io/ios/app/eureka-fast-math-solver/id6738960478)

This AI-powered tutor offers step-by-step solutions for math, science, and geography problems. It allows users to input questions via typing, snapping a photo, or scanning, providing detailed explanations to foster understanding and boost exam readiness.

**Highlights:** Type, snap, or scan math and science problems, Detailed explanations for complex concepts, Interactive AI tutoring at your own pace, Boost exam readiness with practice solutions, Covers algebra, physics, geography, chemistry, and more

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eureka Premium access | $0.99 | per 7 days |
| Eureka Premium access | $0.99 | per 7 days |
| Eureka Premium access | $2.99 | per 7 days |
| Eureka Premium access | $4.99 | per 7 days |
| Eureka Premium Access | $7.99 | per 7 days |
| Eureka Premium access | $9.99 | per month |
| Eureka Premium access | $14.99 | per month |
| Eureka Premium access | $39.99 | per year |


### Yadex

[App page](https://appshunter.io/ios/app/yadex/id6758897445)

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

**In-app purchases:** none


## Frequently asked questions

### Is Eureka free?

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

### Is Yadex free?

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

### Do Eureka or Yadex have ads?

Eureka shows ads; Yadex does not.

### Which is updated more often, Eureka or Yadex?

Eureka ships an update every 4 days, and Yadex every 4 months. Most recently, Eureka was updated on October 21, 2026 and Yadex on October 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.*