# Scientific Calculator FX-991CW — Equation, Matrix & Math Solver

> Equation, Matrix & Math Solver (iPhone/iPad app by Murad Yaghi.)

- Source: https://appshunter.io/ios/app/scientific-calculator-fx-991cw/id6777380822 (this page in markdown: same URL + `.md`)
- Developer: [Murad Yaghi](https://appshunter.io/developer/1740110475)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English
- Released: 2026-06-11
- Data updated: 2026-08-13
- User reviews in markdown: https://appshunter.io/ios/app/scientific-calculator-fx-991cw/id6777380822/reviews.md

## What is Scientific Calculator FX?

Scientific Calculator FX-991CW is a capable scientific calculator for students, engineers, and technical work. It combines fast everyday calculation with structured advanced modes for complex numbers, statistics, distributions, spreadsheets, tables, equations, inequalities, base conversions, matrices, vectors, ratios, and math practice tools. Calculate and Complex modes are free. Scientific Calculator Pro unlocks the advanced modes with monthly, yearly, or lifetime access. The app is designed for direct input, readable results, local history, and quick switching between calculator workflows. It has no ads, no tracking, no accounts, and no analytics SDKs. This independently developed app is not affiliated with or endorsed by any calculator manufacturer. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://earthsensing.org/privacy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Yearly Pro | $4.99 | per year |
| Monthly Pro | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Pro | $7.99 | one-time |



## Version history (last 5 releases)

### 2.0.1 — 2026-08-10

Calculation history now correctly restores previous expressions and results with the Up and Down replay controls, including after clearing the screen. Recalled calculations can now be edited naturally in Calculate, Complex, and Base-N modes. History navigation is also faster and more responsive.

### 2.0 — 2026-07-21

Version 2.0 refreshes the calculator with a larger, more consistent keypad, clearer symbols and labels, refined display spacing, improved exact radical and fraction rendering, portrait-only iPhone operation, and more accurate cursor navigation after calculations.

### 1.0.3 — 2026-07-14

Adds a new app icon and calculator-style HOME app glyphs. Fixes decimal digit grouping, improves FORMAT responsiveness and conversions, renders exact surd fractions with fully stretching radical bars, restores iOS 17 page arrows, keeps equation results visible above the keypad, and makes zero coefficient fields easier to replace.

### 1.0.2 — 2026-06-18

Fixes FORMAT result conversions and improves FORMAT menu responsiveness. Improves equation result visibility when the keypad is open and makes zero coefficient fields behave as placeholders for easier equation entry.

### 1.0.1 — 2026-06-16

Fixes FORMAT result conversions so fraction, decimal, mixed fraction, and quick format toggles update correctly.

## Apps similar to Scientific Calculator FX

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Nepal Lipi Keyboard](https://appshunter.io/ios/app/nepal-lipi-keyboard/id1539281394) | — | Free | Utilities |
| [Mechanical Keyboard: SwitchKey](https://appshunter.io/ios/app/mechanical-keyboard-switchkey/id6748695904) | 3.9 (42) | Free | Utilities |
| [YTool](https://appshunter.io/ios/app/ytool/id6478134322) | — | Free | Utilities |
| [Vocal Remover - AI extractor](https://appshunter.io/ios/app/vocal-remover-ai-extractor/id6755193236) | 4.4 (22) | Free | Utilities |
| [Remax Music](https://appshunter.io/ios/app/remax-music/id6472699675) | — | Free | Utilities |
| [Nepali Calendar Pro](https://appshunter.io/ios/app/nepali-calendar-pro/id923834424) | 4.0 (4) | Free | Utilities |

## More apps by Murad Yaghi

- [Advanced Magnetometer](https://appshunter.io/ios/app/advanced-magnetometer/id6483363931)
- [Advanced Level](https://appshunter.io/ios/app/advanced-level/id6503284282)
- [Taybah Qibla](https://appshunter.io/ios/app/taybah-qibla/id6503632440)
- [Islam Pro: Prayer Times](https://appshunter.io/ios/app/islam-pro-prayer-times/id6773538624)

All apps by Murad Yaghi: https://appshunter.io/developer/1740110475

## Related topics

[scientific calculator plus 991](https://appshunter.io/ios/topics/scientific-calculator-plus-991) · [scientific calc](https://appshunter.io/ios/topics/scientific-calc) · [scientific calculator casio](https://appshunter.io/ios/topics/scientific-calculator-casio) · [scientific math calculator](https://appshunter.io/ios/topics/scientific-math-calculator)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-13.*