# HP15C: Scientific Calculator — Classic Science Calc for you

> Emulates a classic 90s scientific calculator for iPhone and iPad. (iPhone/iPad app by FERMAVE.)

- Source: https://appshunter.io/ios/app/hp15c-scientific-calculator/id6741306693 (this page in markdown: same URL + `.md`)
- Developer: [FERMAVE](https://appshunter.io/developer/1743250649)
- Category: Utilities, Finance
- Price: $4.99
- Rating: 2.70/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 24 MB
- Languages: American English
- Released: 2025-01-31
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hp15c-scientific-calculator/id6741306693/reviews.md

## What is HP15C?

Vintage classic scientific calculator. The 90s are back baby!

A really special person asked me to build this calculator as it was his favorite calculator, here it goes my dear.

privacy policy: https://fermave.com
Terms of service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

## Key features

- Vintage scientific calculator emulation
- Classic 90s design
- Functional for scientific calculations
- Nostalgic user experience

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/hp15c-scientific-calculator/id6741306693/reviews.md

### 2/5 — Oops

*2025-03-20*

Inverse Tangent in degrees is still broken.

### 5/5 — Calculator nostalgia

*2025-03-14*

Works great! My son loves it!

### 1/5 — Tan -1 does not work

*2025-02-25*

Inverse tangent doesn’t work in degrees

**Developer response:** I fixed this bug, please try again!

## Frequently asked questions about HP15C

### What is HP15C?

HP15C is a vintage scientific calculator app that emulates a classic 90s model. It offers a functional and nostalgic computing experience for users on iPhone and iPad.

### How much does HP15C cost?

HP15C is a paid application, priced at $4.99. This one-time purchase grants you access to the full functionality of the classic scientific calculator.

### Does HP15C have ads?

No, HP15C does not contain advertisements. As a paid application, it provides an uninterrupted user experience without any in-app ads.

### What devices support HP15C?

HP15C is compatible with iPhone, iPad, and iPod devices. It is designed to run on Apple's mobile operating systems.

### What is the age rating for HP15C?

HP15C has an age rating of 4+. This indicates that the app is suitable for users of all ages, with no mature content.

### When was HP15C last updated?

The latest version of HP15C was released on January 29, 2026. The app is actively maintained by its developer, FERMAVE LLC.

### What is the user sentiment for HP15C?

Based on the available data, HP15C has a rating of 2.7 stars from 3 ratings. This suggests a mixed user reception.

## Version history (last 3 releases)

### 1.2 — 2026-01-29

fixed bugs, added sound button

### 1.1 — 2025-03-13

fixed bugs

### 1.0 — 2025-01-31

No release notes.

## Apps similar to HP15C

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [HP-35](https://appshunter.io/ios/app/hp-35/id6738010641) | 5.0 (5) | Free | Utilities |
| [RLM-10CX](https://appshunter.io/ios/app/rlm-10cx/id6466089794) | 5.0 (1) | Free | Utilities |
| [my41CX](https://appshunter.io/ios/app/my41cx/id979041950) | 5.0 (2) | Free | Utilities |
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| [HP 15c Calculator](https://appshunter.io/ios/app/hp-15c-calculator/id503720774) | 4.8 (207) | $14.99 | Utilities |
| [RLM-11CX](https://appshunter.io/ios/app/rlm-11cx/id1630739014) | 3.1 (7) | Free | Utilities |

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All apps by FERMAVE: https://appshunter.io/developer/1743250649

## Related topics

[hp 15c](https://appshunter.io/ios/topics/hp-15c) · [hp 15c calculator](https://appshunter.io/ios/topics/hp-15c-calculator)

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*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 2026-08-24.*