# kong calculator vs Image Compressor

The clearest difference is in-app purchases: kong calculator at none against Image Compressor's 3. kong calculator also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.5). Image Compressor's advantage is ads (none vs shown). On price and update cadence there is nothing between them.

Both are free to download. Image Compressor sells 3 in-app purchases, starting at $0.99 per 7 days. kong calculator asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on June 5, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | kong calculator | Image Compressor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | Every 4 days |
| Size | 20 MB | 40 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Changyeol Seo](https://appshunter.io/developer/551904752) | [Jasmin Begum](https://appshunter.io/developer/1853218070) |

## What reviewers say

### kong calculator

[App page](https://appshunter.io/ios/app/kong-calculator/id1594969449)

**Features:** macOS Compatibility

**In-app purchases:** none


### Image Compressor

[App page](https://appshunter.io/ios/app/image-compressor-imglite/id6759036618)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $0.99 | per 7 days |
| Yearly Plan | $4.99 | per year |
| Lifetime Plan | $6.99 | one-time |


## Frequently asked questions

### Is kong calculator free?

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

### Is Image Compressor free?

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

### Do kong calculator or Image Compressor have ads?

kong calculator shows ads; Image Compressor does not.

### Which is updated more often, kong calculator or Image Compressor?

kong calculator ships an update every 4 days, and Image Compressor every 4 days. Most recently, kong calculator was updated on June 5, 2026 and Image Compressor on September 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*