# Classicalc calculator vs Mars Legacy

The clearest difference is review sentiment: Classicalc calculator at 63% against Mars Legacy's 12%. Classicalc calculator also leads on rating (3.8 vs 1.3) and device support (5 vs 2). Mars Legacy's advantage is price (Free vs $0.99) and update cadence (monthly vs every 20 months). On ads, in-app purchases and iOS requirement there is nothing between them.

Mars Legacy is free to download; Classicalc calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Classicalc calculator holds the better App Store score, 3.8 against 1.3. That said, the two scores are not equally well evidenced: Mars Legacy has 71 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 63% of Classicalc calculator's written reviews are positive against 12% of Mars Legacy's.

Classicalc calculator ships an update every 20 months, Mars Legacy monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Classicalc calculator | Mars Legacy |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.8 (13 ratings)](https://appshunter.io/ios/app/classicalc-calculator/id989434780/reviews)** | [1.3 (71 ratings)](https://appshunter.io/ios/app/mars-legacy/id1612237275/reviews) |
| Number of ratings | 13 | **71** |
| Positive reviews | **62.5% of reviews** | 12.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 14 MB | 59 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lukasz Kowalski](https://appshunter.io/developer/792954012) | [MARS TRADING RCC, INC.](https://appshunter.io/developer/1726858942) |

## What reviewers say

### Classicalc calculator

[App page](https://appshunter.io/ios/app/classicalc-calculator/id989434780)

This calculator app offers instant calculations as you type, following the mathematical order of operations. It features unique piano sound themes and allows seamless continuation of calculations across iPhone and Apple Watch. Your equations are automatically saved for convenience.

**Highlights:** Instant calculation as you type, Mathematical order of operators, Cross-device continuity (iPhone/Watch), Automatic equation saving, 14 piano sound themes, Copy result to clipboard

**In-app purchases:** none


### Mars Legacy

[App page](https://appshunter.io/ios/app/mars-legacy/id1612237275)

Control and configure your indoor grow lights remotely. Automate growth cycles with custom timers, simulate sunrise and sunset, and manage multiple lights independently from a single device. Compatible with the Mars Hydro Smart Grow System.

**Highlights:** Remote LED light control, Adjustable light intensity, Automatic growth cycle programming, Sunrise/sunset simulation, Wireless multi-light control, Independent lighting group management

**In-app purchases:** none

**What reviewers like**

- ✅ Fan control works reliably
- ⚙️ Basic on/off functionality operational
- 🎯 Good hardware quality (lights and fans)
- 💰 Reasonable price-to-quality ratio
- 📱 App concept is innovative

**What reviewers complain about**

- 🐛 Frequent disconnections (WiFi and Bluetooth)
- ⏱️ Timer functionality completely broken
- 🌅 Sunrise/sunset mode non-functional
- 🎬 Scene/automation features unreliable
- 🔄 App randomly resets or crashes

**Reported bugs**

- App cannot detect Bluetooth despite phone detecting it
- Timer settings do not execute at scheduled times
- Scenes and automation groups fail to work
- WiFi connection drops frequently and reconnection fails
- Light brightness changes unexpectedly without user input

**Requested features**

- Multiple on/off cycles per day for automation
- Daylight saving time adjustment option
- Sunrise/sunset mode with adjustable brightness levels
- Better WiFi stability and range
- Improved app interface and user experience


## Frequently asked questions

### Is Classicalc calculator free?

Classicalc calculator costs $0.99, with no in-app purchases.

### Is Mars Legacy free?

Mars Legacy is free to download, with no in-app purchases.

### Which has better reviews, Classicalc calculator or Mars Legacy?

Classicalc calculator is rated higher. Classicalc calculator averages 3.8 out of 5 from 13 ratings, while Mars Legacy averages 1.3 from 71 ratings.

### Do Classicalc calculator or Mars Legacy have ads?

Neither Classicalc calculator nor Mars Legacy shows ads.

### Which is updated more often, Classicalc calculator or Mars Legacy?

Classicalc calculator ships an update every 20 months, and Mars Legacy monthly. Most recently, Classicalc calculator was updated on November 6, 2026 and Mars Legacy on November 3, 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.*