# Calsy vs Zal

The clearest difference is in-app purchases: Calsy at none against Zal's 2. Calsy also leads on review sentiment (100% vs 67%). Zal's advantage is update cadence (every 9 days vs monthly) and iOS requirement (12.0 vs 15.2). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Zal sells 2 in-app purchases, starting at $0.99 per month. Calsy asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Calsy against 5.0 for Zal. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 100% of Calsy's written reviews are positive against 67% of Zal's.

Calsy ships an update monthly, Zal every 9 days. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Calsy | Zal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/calsy-smart-quick-simple/id1624719076/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/zal/id6470055238/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 86 MB |
| Requires iOS | 15.2 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Salvador Garcia Bernal](https://appshunter.io/developer/1623605487) | [karos mohammed](https://appshunter.io/developer/1678806713) |

## What reviewers say

### Calsy

[App page](https://appshunter.io/ios/app/calsy-smart-quick-simple/id1624719076)

This versatile calculator offers a minimalist interface with powerful functionality for everyday calculations. It includes features for exploring facts, calculating gas performance, mastering price increases, converting temperatures and lengths, estimating paint needs, and simplifying number conversions.

**Highlights:** Explore interesting facts, Calculate gas performance and cost, Master price increases and percentages, Convert temperatures and lengths, Calculate paint and garden volume, Simplify number system conversions, Estimate file transfer time

**Features:** macOS Compatibility

**In-app purchases:** none


### Zal

[App page](https://appshunter.io/ios/app/zal/id6470055238)

Monitor your PC's performance in real-time from your mobile device. Track CPU, GPU, RAM, and storage health, analyze game performance with FPS data, and check if your system can run specific games. Includes stress testing for stability.

**Highlights:** Real-time PC monitoring (CPU, GPU, RAM, storage), Detailed FPS analysis (FPS, 1% low, 0.1% low), Game system requirements checker, PC stress testing for stability, Mobile device access to PC stats

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Anual | $9.99 | per year |


## Frequently asked questions

### Is Calsy free?

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

### Is Zal free?

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

### Which has better reviews, Calsy or Zal?

Calsy and Zal are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Calsy or Zal have ads?

Neither Calsy nor Zal shows ads.

### Which is updated more often, Calsy or Zal?

Calsy ships an update monthly, and Zal every 9 days. Most recently, Calsy was updated on October 16, 2026 and Zal on October 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.*