# Grid Calculator. vs Arithon Calculator

The clearest difference is in-app purchases: Arithon Calculator at none against Grid Calculator.'s 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Grid Calculator. sells 2 in-app purchases, starting at $9.99 per 7 days. Arithon Calculator asks for nothing beyond the download.

Grid Calculator. ships an update every 2 weeks, Arithon Calculator weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Grid Calculator. | Arithon Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 10 MB | 31 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong BLJ Cosmetics Limited](https://appshunter.io/developer/1680645623) | [Mind Mirage Apps Ltd](https://appshunter.io/developer/1896465995) |

## What reviewers say

### Grid Calculator.

[App page](https://appshunter.io/ios/app/grid-calculator/id6757141903)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Gold | $9.99 | per 7 days |
| Yearly Gold | $39.99 | per year |


### Arithon Calculator

[App page](https://appshunter.io/ios/app/arithon-calculator/id6767340730)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grid Calculator. free?

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

### Is Arithon Calculator free?

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

### Do Grid Calculator. or Arithon Calculator have ads?

Neither Grid Calculator. nor Arithon Calculator shows ads.

### Which is updated more often, Grid Calculator. or Arithon Calculator?

Grid Calculator. ships an update every 2 weeks, and Arithon Calculator weekly. Most recently, Grid Calculator. was updated on November 5, 2026 and Arithon Calculator on October 31, 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.*