# synchroCalc vs HiPER Scientific Calculator

The clearest difference is ads: synchroCalc at none against HiPER Scientific Calculator's shown. synchroCalc also leads on rating (5.0 vs 4.7) and iOS requirement (8.0 vs 15.0). HiPER Scientific Calculator's advantage is update cadence (every 3 weeks vs every 4 months) and ratings volume (279 vs 3). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. synchroCalc sells 1 one-off in-app purchase and HiPER Scientific Calculator sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

synchroCalc holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: HiPER Scientific Calculator has 279 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 71% of synchroCalc's written reviews are positive against 83% of HiPER Scientific Calculator's, so the app with the better star average is not the one people write more warmly about.

synchroCalc ships an update every 4 months, HiPER Scientific Calculator every 3 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | synchroCalc | HiPER Scientific Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/synchrocalc/id1073411743/reviews)** | [4.7 (279 ratings)](https://appshunter.io/ios/app/hiper-scientific-calculator/id1645513530/reviews) |
| Number of ratings | 3 | **279** |
| Positive reviews | 70.6% of reviews | **82.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 27 MB | 35 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Akeome Studio](https://appshunter.io/developer/1044573722) | [Jindrich Houska](https://appshunter.io/developer/1645513532) |

## What reviewers say

### synchroCalc

[App page](https://appshunter.io/ios/app/synchrocalc/id1073411743)

This utility converts numbers between binary, decimal, and hexadecimal formats. It offers adjustable bit sizes and supports various arithmetic and bitwise operations, ideal for developers and engineers.

**Highlights:** Binary, decimal, hexadecimal display, Adjustable bit sizes (64/32/16/8-bit), Signed/unsigned number switching, 12 arithmetic and bitwise operations, Copy/paste functionality, Supports iPhone, iPad, and iPod touch

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & display expression | $1.99 | one-time |


### HiPER Scientific Calculator

[App page](https://appshunter.io/ios/app/hiper-scientific-calculator/id1645513530)

This app offers advanced scientific calculation capabilities, including symbolic algebra, equation solving, and calculus functions. It supports high precision, natural expression input, and various display formats. Users can also visualize functions and equations with 2D and 3D graphing.

**Highlights:** Symbolic algebra, Integrals and derivatives, High precision calculations, Natural expression input, 2D and 3D graphing, Matrices and vectors, Unit conversions

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version | $0.99 | per month |
| Pro Forever | $7.99 | one-time |

**What reviewers like**

- 👍 Excellent functionality for technical users
- 💡 Custom functions for non-trivial calculations
- 👍 Great expression screen, easy to navigate
- 👍 Accurate and intuitive UI
- 👍 Remains the best after years of use

**What reviewers complain about**

- 🐛 Keyboard unresponsive at times
- 🐛 Ads in paid version
- 🐛 iOS version lacks RPN mode
- 🐛 iOS version lacks themes
- 🐛 iOS version lacks custom functions

**Reported bugs**

- Keyboard unresponsive in multiple occasions
- App freezes when entering numbers
- Failed upgrade workflow message
- App offers paid upgrade after purchase
- White text unreadable on dark background in iOS settings

**Requested features**

- Allow custom infix operations
- Add widget support
- Add RPN mode to iOS version
- Add themes to iOS version
- Add custom functions to iOS version


## Frequently asked questions

### Is synchroCalc free?

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

### Is HiPER Scientific Calculator free?

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

### Which has better reviews, synchroCalc or HiPER Scientific Calculator?

synchroCalc is rated higher. synchroCalc averages 5.0 out of 5 from 3 ratings, while HiPER Scientific Calculator averages 4.7 from 279 ratings.

### Do synchroCalc or HiPER Scientific Calculator have ads?

HiPER Scientific Calculator shows ads; synchroCalc does not.

### Which is updated more often, synchroCalc or HiPER Scientific Calculator?

synchroCalc ships an update every 4 months, and HiPER Scientific Calculator every 3 weeks. Most recently, synchroCalc was updated on November 2, 2026 and HiPER Scientific Calculator on November 7, 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.*