# Gurú Pucp vs Scientific Calculator fx

The clearest difference is in-app purchases: Gurú Pucp at none against Scientific Calculator fx's 5. Gurú Pucp also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Scientific Calculator fx's advantage is update cadence (every 2 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Scientific Calculator fx sells 5 in-app purchases, starting at $1.99 per month. Gurú Pucp asks for nothing beyond the download.

Gurú Pucp ships an update every 3 months, Scientific Calculator fx every 2 weeks. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Gurú Pucp | Scientific Calculator fx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (440 ratings)](https://appshunter.io/ios/app/scientific-calculator-fx-991/id1673640297/reviews)** |
| Number of ratings | — | **440** |
| Positive reviews | — | 83.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 27 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [PUCP](https://appshunter.io/developer/1062951985) | [Dinh Phuc](https://appshunter.io/developer/1673640299) |

## What reviewers say

### Gurú Pucp

[App page](https://appshunter.io/ios/app/guru-pucp/id1062951986)

**Features:** macOS Compatibility

**In-app purchases:** none


### Scientific Calculator fx

[App page](https://appshunter.io/ios/app/scientific-calculator-fx-991/id1673640297)

This app provides a powerful scientific calculator with step-by-step solutions for equations, advanced functions, and graphing capabilities. It includes a formula library and unit converter, inspired by a popular Casio model, to aid in learning and problem-solving for math and science subjects.

**Highlights:** Step-by-step equation solver, Advanced scientific functions, Graphing mode, Formula library, Unit converter, Casio fx-991 inspired interface

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Access | $1.99 | per month |
| 6-Month Premium Membership | $2.49 | per 6 months |
| Yearly Premium Access | $7.99 | per year |
| Remove Ads 30 Days | $0.99 | one-time |
| HiEdu Pro Lifetime | $14.99 | one-time |

**What reviewers like**

- 👍 Very helpful for classes
- 💰 Free to use
- 👍 Useful without physical calculator
- 👍 Good for engineering students
- 👍 Handles imaginary numbers

**What reviewers complain about**

- 🐛 Latest update inconvenient
- 🐛 Update overrides calculations
- 🐛 Mistake in challenge section
- 🐛 Removed important buttons
- 🐛 Cannot find pi button

**Reported bugs**

- App crashes on loading screen
- App closes immediately on opening
- App crashes on iOS 18
- App closes after update
- Cannot upgrade to paid version

**Requested features**

- Fix update issue with calculation display
- Fix duplicate log key in Fx-350 layout
- Add CW layout for Casio fx991 cw
- Change ☐² to X² and ☐⁻¹ to X⁻¹


## Frequently asked questions

### Is Gurú Pucp free?

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

### Is Scientific Calculator fx free?

Scientific Calculator fx is free to download, with in-app purchases available.

### Do Gurú Pucp or Scientific Calculator fx have ads?

Scientific Calculator fx shows ads; Gurú Pucp does not.

### Which is updated more often, Gurú Pucp or Scientific Calculator fx?

Gurú Pucp ships an update every 3 months, and Scientific Calculator fx every 2 weeks. Most recently, Gurú Pucp was updated on October 9, 2026 and Scientific Calculator fx on October 25, 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.*