# Atai vs Oilbook

The clearest difference is rating: Oilbook at 4.2 against Atai's 3.0. Oilbook also leads on update cadence (every 3 weeks vs every 2 months). Atai's advantage is iOS requirement (15.0 vs 17.6). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Atai sells 1 one-off in-app purchase and Oilbook sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Oilbook holds the better App Store score, 4.2 against 3.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews split almost evenly too, at 60% and 60% positive.

Atai ships an update every 2 months, Oilbook every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Atai | Oilbook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/atai/id1533679261/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/oilbook-liquid-painting/id6450856438/reviews)** |
| Number of ratings | 2 | **5** |
| Positive reviews | 60.0% of reviews | 60.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 74 MB | 40 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Patricio Lagos](https://appshunter.io/developer/382165112) | [晶雷 端](https://appshunter.io/developer/993482952) |

## What reviewers say

### Atai

[App page](https://appshunter.io/ios/app/atai/id1533679261)

Create precise vector drawings with an infinite canvas and advanced curve tools. Refine strokes, manage layers, and organize projects with an intuitive file manager. Unlock full export capabilities with a pro version.

**Highlights:** Vector drawing with Bézier curves, Infinite canvas, Layer management, Intuitive file manager, Grids and alignment tools, Undo/Redo functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |


### Oilbook

[App page](https://appshunter.io/ios/app/oilbook-liquid-painting/id6450856438)

This app offers a realistic oil painting simulation by focusing on fluid dynamics for authentic paint flow and diffusion. It provides extensive brush customization and color selection tools for a dynamic artistic experience.

**Highlights:** Fluid mechanics-based paint simulation, Customizable brush parameters, Color wheel and eyedropper tool, Multiple undo/redo support, Save and share artwork, Apple Pencil pressure sensitivity

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Oilbook Pro | $4.99 | one-time |


## Frequently asked questions

### Is Atai free?

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

### Is Oilbook free?

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

### Which has better reviews, Atai or Oilbook?

Oilbook is rated higher. Atai averages 3.0 out of 5 from 2 ratings, while Oilbook averages 4.2 from 5 ratings.

### Do Atai or Oilbook have ads?

Both Atai and Oilbook show ads.

### Which is updated more often, Atai or Oilbook?

Atai ships an update every 2 months, and Oilbook every 3 weeks. Most recently, Atai was updated on November 3, 2026 and Oilbook on November 3, 2026.

---

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