# ONKO vs Shrink

The clearest difference is in-app purchases: ONKO at none against Shrink's 7. ONKO also leads on iOS requirement (14.2 vs 16.0). Shrink's advantage is update cadence (weekly vs every 17 months). On price, ads and device support there is nothing between them.

Both are free to download. Shrink sells 7 in-app purchases, starting at $14.99 per month. ONKO asks for nothing beyond the download.

ONKO ships an update every 17 months, Shrink weekly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ONKO | Shrink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Weekly** |
| Size | 155 MB | 67 MB |
| Requires iOS | **14.2** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Institut Za Onkologiju i Radiologiju Srbije](https://appshunter.io/developer/1497027337) | [Smart Way Games](https://appshunter.io/developer/440148951) |

## What reviewers say

### ONKO

[App page](https://appshunter.io/ios/app/onko/id1497027338)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shrink

[App page](https://appshunter.io/ios/app/shrink-go-deeper-ai-chat/id6747477318)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shrink Insight – Monthly | $14.99 | per month |
| Shrink Growth – Monthly | $29.99 | per month |
| Shrink Insight – Yearly | $99.99 | per year |
| Shrink Growth – Yearly | $199.99 | per year |
| Voice Top-up | $3.99 | one-time |
| Small top-up | $8.99 | one-time |
| Large top-up | $14.99 | one-time |


## Frequently asked questions

### Is ONKO free?

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

### Is Shrink free?

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

### Do ONKO or Shrink have ads?

Neither ONKO nor Shrink shows ads.

### Which is updated more often, ONKO or Shrink?

ONKO ships an update every 17 months, and Shrink weekly. Most recently, ONKO was updated on November 3, 2026 and Shrink on October 30, 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.*