# SKYEMS vs Grid Calculator.

The clearest difference is in-app purchases: SKYEMS at none against Grid Calculator.'s 2. Grid Calculator.'s advantage is update cadence (every 2 weeks vs every 4 months) and iOS requirement (16.0 vs 18.6). On price, 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. SKYEMS asks for nothing beyond the download.

SKYEMS ships an update every 4 months, Grid Calculator. every 2 weeks. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | SKYEMS | Grid Calculator. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 22 MB | 10 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Beijing chunzuomunian Technology Co., Ltd](https://appshunter.io/developer/1509386932) | [Hong Kong BLJ Cosmetics Limited](https://appshunter.io/developer/1680645623) |

## What reviewers say

### SKYEMS

[App page](https://appshunter.io/ios/app/skyems/id1503282837)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is SKYEMS free?

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

### Is Grid Calculator. free?

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

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

Neither SKYEMS nor Grid Calculator. shows ads.

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

SKYEMS ships an update every 4 months, and Grid Calculator. every 2 weeks. Most recently, SKYEMS was updated on November 3, 2026 and Grid Calculator. on November 9, 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.*