# KS Calculator vs CILLS

The clearest difference is iOS requirement: KS Calculator at 10.0 against CILLS's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KS Calculator ships an update every 3 months, CILLS every 2 months. The most recent releases landed on October 26, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | KS Calculator | CILLS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 85 MB | 30 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arresto Solutions Private Limited](https://appshunter.io/developer/1444831394) | [CILLS](https://appshunter.io/developer/1852869221) |

## What reviewers say

### KS Calculator

[App page](https://appshunter.io/ios/app/ks-calculator/id1476246867)

**Features:** macOS Compatibility

**In-app purchases:** none


### CILLS

[App page](https://appshunter.io/ios/app/cills/id6755255125)

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

**In-app purchases:** none


## Frequently asked questions

### Is KS Calculator free?

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

### Is CILLS free?

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

### Do KS Calculator or CILLS have ads?

Neither KS Calculator nor CILLS shows ads.

### Which is updated more often, KS Calculator or CILLS?

KS Calculator ships an update every 3 months, and CILLS every 2 months. Most recently, KS Calculator was updated on October 26, 2026 and CILLS 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.*