# NUR BILIM vs PDD Study

The clearest difference is in-app purchases: NUR BILIM at none against PDD Study's 2. PDD Study's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PDD Study sells 2 in-app purchases, starting at $5.99 per month. NUR BILIM asks for nothing beyond the download.

NUR BILIM ships an update every 2 months, PDD Study every 2 weeks. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | NUR BILIM | PDD Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 39 MB | 66 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Ruslan Ilisbekov](https://appshunter.io/developer/1581051885) | [Almaz Alekeev](https://appshunter.io/developer/1844773385) |

## What reviewers say

### NUR BILIM

[App page](https://appshunter.io/ios/app/nur-bilim/id1667516785)

**In-app purchases:** none


### PDD Study

[App page](https://appshunter.io/ios/app/pdd-study/id6753738135)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ПДД Pro | $5.99 | per month |
| ПДД Про | $9.99 | per 3 months |


## Frequently asked questions

### Is NUR BILIM free?

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

### Is PDD Study free?

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

### Do NUR BILIM or PDD Study have ads?

Neither NUR BILIM nor PDD Study shows ads.

### Which is updated more often, NUR BILIM or PDD Study?

NUR BILIM ships an update every 2 months, and PDD Study every 2 weeks. Most recently, NUR BILIM was updated on October 7, 2026 and PDD Study on October 12, 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.*