# Mathhub vs Rigl

The clearest difference is in-app purchases: Rigl at none against Mathhub's 3. Rigl also leads on update cadence (weekly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mathhub sells 3 in-app purchases, starting at $4.99 per 7 days. Rigl asks for nothing beyond the download.

Mathhub ships an update every 4 months, Rigl weekly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Mathhub | Rigl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rigl-lingvo/id6776130659/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | — | Free |
| Size | 68 MB | 37 MB |
| Requires iOS | 15.2 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shobha Vastarpara](https://appshunter.io/developer/1723727636) | [Ilia Bakanov](https://appshunter.io/developer/6776130661) |

## What reviewers say

### Mathhub

[App page](https://appshunter.io/ios/app/mathhub-ai-homework-helper/id6740975873)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week Premium | $4.99 | per 7 days |
| 1 Month Premium | $9.99 | per month |
| 1 Year Premium | $59.99 | per year |


### Rigl

[App page](https://appshunter.io/ios/app/rigl-lingvo/id6776130659)

This app helps you master English phrasal and irregular verbs for spontaneous speech. Practice real-life prompts, get instant feedback, and learn natural expressions through context, not just memorization.

**Highlights:** Practice phrasal verbs in speaking exercises, Drill irregular verb forms in real sentences, Train spontaneous answers, Get instant feedback and alternatives, Use hints when stuck, Practice by typing or voice, Browse verb catalogs with translations

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

**In-app purchases:** none


## Frequently asked questions

### Is Mathhub free?

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

### Is Rigl free?

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

### Do Mathhub or Rigl have ads?

Neither Mathhub nor Rigl shows ads.

### Which is updated more often, Mathhub or Rigl?

Mathhub ships an update every 4 months, and Rigl weekly. Most recently, Mathhub was updated on October 28, 2026 and Rigl on October 31, 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.*