# RenderLab vs Kosbling

The clearest difference is review sentiment: Kosbling at 100% against RenderLab's 14%. Kosbling also leads on rating (5.0 vs 4.3). RenderLab's advantage is ratings volume (171 vs 1) and iOS requirement (12.4 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. RenderLab sells 2 in-app purchases, starting at $7.99 per 7 days and Kosbling sells 7 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Kosbling holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: RenderLab has 171 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 14% of RenderLab's written reviews are positive against 100% of Kosbling's.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | RenderLab | Kosbling |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (171 ratings)](https://appshunter.io/ios/app/renderlab-ai-art-generator/id6463705774/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kosbling/id6756257389/reviews)** |
| Number of ratings | **171** | 1 |
| Positive reviews | 14.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 59 MB | 25 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Frunzik Ghazaryan](https://appshunter.io/developer/1675419602) | [Kosbling](https://appshunter.io/developer/1859569939) |

## What reviewers say

### RenderLab

[App page](https://appshunter.io/ios/app/renderlab-ai-art-generator/id6463705774)

Effortlessly create unique AI-generated art from text prompts. Explore diverse artistic styles and bring your imagination to life with stunning, one-of-a-kind visuals.

**Highlights:** AI image creation from text prompts, Diverse artistic style selection, Generate distinctive and stunning art, Effortless image creation process, Unlock creative potential

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock AI Image Pro | $7.99 | per 7 days |
| Unlock AI Image Pro | $49.99 | per year |

**What reviewers like**

- ✨ Beautiful images created
- 💡 Understands user requests well
- 🤩 Fantastical creations

**What reviewers complain about**

- 🐌 Extremely slow generation times
- 🔒 Paywall/subscription required
- ❌ Unusable without payment
- 🚫 No free trial available
- 📉 Paid version worse than free

**Reported bugs**

- App locks up, buttons don't work
- App freezes after deleting/reinstalling
- App doesn't restore previous subscription
- Cannot get past introduction screens
- Generator doesn't load images after starting

**Requested features**

- Allow account login from PC
- Improve app functionality to match web version
- Add more prompts/options to the app
- Clear history option


### Kosbling

[App page](https://appshunter.io/ios/app/kosbling/id6756257389)

Create professional branding and product visuals effortlessly. Design custom logos, set atmospheric lighting, and generate realistic product try-on mockups. Visualize packaging and maintain a cohesive brand aesthetic with an intuitive interface.

**Highlights:** Instant custom logo generation, Atmospheric vibe and lighting effects, Realistic product try-on previews, Cost-effective digital packaging mockups, Unified brand aesthetic creation, Intuitive interface for non-designers

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kosbling Pro Weekly | $9.99 | per 7 days |
| Kosbling Pro Monthly | $36.99 | per month |
| Kosbling Pro Yearly | $77.99 | per year |
| 200 Credits | $4.99 | one-time |
| 500 Credits | $10.99 | one-time |
| 1200 Credits | $24.99 | one-time |
| 3000 Credits | $59.99 | one-time |


## Frequently asked questions

### Is RenderLab free?

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

### Is Kosbling free?

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

### Which has better reviews, RenderLab or Kosbling?

Kosbling is rated higher. RenderLab averages 4.3 out of 5 from 171 ratings, while Kosbling averages 5.0 from 1 ratings.

### Do RenderLab or Kosbling have ads?

Neither RenderLab nor Kosbling shows ads.

### Which is updated more often, RenderLab or Kosbling?

RenderLab ships an update weekly, and Kosbling weekly. Most recently, RenderLab was updated on October 24, 2026 and Kosbling on October 7, 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.*