# UNIVERSALLY OPAZ vs Pre Calculus

The clearest difference is in-app purchases: UNIVERSALLY OPAZ at none against Pre Calculus's 8. Pre Calculus's advantage is update cadence (every 5 weeks vs every 25 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Pre Calculus sells 8 in-app purchases, starting at $1.99 per 7 days. UNIVERSALLY OPAZ asks for nothing beyond the download.

UNIVERSALLY OPAZ ships an update every 25 months, Pre Calculus every 5 weeks. The most recent releases landed on October 6, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | UNIVERSALLY OPAZ | Pre Calculus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/pre-calculus/id6503323104/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 89 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SCHOOL IBOX S.A.S. DE C.V.](https://appshunter.io/developer/1271228289) | [Mehmet Demir](https://appshunter.io/developer/1522952577) |

## What reviewers say

### UNIVERSALLY OPAZ

[App page](https://appshunter.io/ios/app/universally-opaz/id1618048471)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pre Calculus

[App page](https://appshunter.io/ios/app/pre-calculus/id6503323104)

This AI-powered app helps with math homework by solving problems from photos and offering chat-based explanations. It allows users to save solutions, use voice commands, and receive answers formatted in LaTeX. It aims to make learning math easier and more engaging.

**Highlights:** Solve math homework from photos, Chat with AI for explanations, Save solved homework questions, LaTeX formatted answers, Read aloud solutions, Speech to text for voice commands

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Question Solver Math Weekly | $1.99 | per 7 days |
| Math Solver | $3.99 | per month |
| Math AI helper Super Math | $5.99 | per 7 days |
| Math Solver Weekly | $5.99 | per 7 days |
| Math AI Solver Homework Helper | $8.99 | per month |
| Homework Helper Super Math ai+ | $8.99 | per month |
| Solver Mah Premium Yearly | $44.99 | per year |
| Math Question Solver Premium | $49.99 | per year |


## Frequently asked questions

### Is UNIVERSALLY OPAZ free?

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

### Is Pre Calculus free?

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

### Do UNIVERSALLY OPAZ or Pre Calculus have ads?

Neither UNIVERSALLY OPAZ nor Pre Calculus shows ads.

### Which is updated more often, UNIVERSALLY OPAZ or Pre Calculus?

UNIVERSALLY OPAZ ships an update every 25 months, and Pre Calculus every 5 weeks. Most recently, UNIVERSALLY OPAZ was updated on October 6, 2026 and Pre Calculus on October 19, 2026.

---

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