# Halcyon Calc Lite vs CompSci Calculator

The clearest difference is in-app purchases: CompSci Calculator at none against Halcyon Calc Lite's 3. CompSci Calculator also leads on update cadence (every 3 days vs every 3 months) and iOS requirement (10.0 vs 16.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Halcyon Calc Lite sells 3 one-off in-app purchases. CompSci Calculator asks for nothing beyond the download.

Halcyon Calc Lite holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 15 and 42 respectively. Written reviews point the same way: 67% of Halcyon Calc Lite's written reviews are positive against 63% of CompSci Calculator's.

Halcyon Calc Lite ships an update every 3 months, CompSci Calculator every 3 days. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Halcyon Calc Lite | CompSci Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (15 ratings)](https://appshunter.io/ios/app/halcyon-calc-lite/id408004888/reviews)** | [4.4 (42 ratings)](https://appshunter.io/ios/app/compsci-calculator/id1111878012/reviews) |
| Number of ratings | 15 | **42** |
| Positive reviews | **66.7% of reviews** | 62.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 13 MB | 55 MB |
| Requires iOS | 16.6 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Halcyon Touch Software](https://appshunter.io/developer/327064662) | [Corey Smith](https://appshunter.io/developer/1070099434) |

## What reviewers say

### Halcyon Calc Lite

[App page](https://appshunter.io/ios/app/halcyon-calc-lite/id408004888)

This app is a powerful calculator for students and professionals, offering advanced features like symbolic expression manipulation, graphing, and statistical analysis. It supports real, complex, and integer numbers, matrices, and vectors, making it versatile for various mathematical tasks.

**Highlights:** Symbolic expression manipulation, Graphing of expressions, Matrix and vector calculations, Statistical analysis, Multiple number formats (decimal, hex, octal, binary), Over 225 built-in operations

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Directory And Unit Conversion Support | $0.99 | one-time |
| Programming Support | $1.99 | one-time |
| Larger Display Upgrade | $1.99 | one-time |


### CompSci Calculator

[App page](https://appshunter.io/ios/app/compsci-calculator/id1111878012)

Perform calculations and conversions between decimal, hexadecimal, and binary bases in real-time. Ideal for programmers and computer scientists, it offers simultaneous display of values across all three modes and supports bitwise operations and complements.

**Highlights:** Decimal, hexadecimal, and binary base calculations, Real-time simultaneous conversion, Basic algebra between bases, Selectable bit size (8, 16, 24, 32), Bitwise functions, 1's and 2's complements

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

**In-app purchases:** none


## Frequently asked questions

### Is Halcyon Calc Lite free?

Halcyon Calc Lite is free to download, with in-app purchases available.

### Is CompSci Calculator free?

CompSci Calculator is free to download, with no in-app purchases.

### Which has better reviews, Halcyon Calc Lite or CompSci Calculator?

Halcyon Calc Lite is rated higher. Halcyon Calc Lite averages 4.6 out of 5 from 15 ratings, while CompSci Calculator averages 4.4 from 42 ratings.

### Do Halcyon Calc Lite or CompSci Calculator have ads?

Both Halcyon Calc Lite and CompSci Calculator show ads.

### Which is updated more often, Halcyon Calc Lite or CompSci Calculator?

Halcyon Calc Lite ships an update every 3 months, and CompSci Calculator every 3 days. Most recently, Halcyon Calc Lite was updated on November 1, 2026 and CompSci Calculator on November 2, 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.*