# Doo Nok vs LongLenAI

The clearest difference is in-app purchases: Doo Nok at none against LongLenAI's 10. Doo Nok also leads on ads (none vs shown) and iOS requirement (10.0 vs 16.4). LongLenAI's advantage is update cadence (every 2 weeks vs every 11 months). On price and device support there is nothing between them.

Both are free to download. LongLenAI sells 10 one-off in-app purchases. Doo Nok asks for nothing beyond the download.

Doo Nok ships an update every 11 months, LongLenAI every 2 weeks. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Doo Nok | LongLenAI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Size | 18 MB | 172 MB |
| Requires iOS | **10.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [True Digital Group Co., Ltd.](https://appshunter.io/developer/1376509229) | [LONGLEN AI COMPANY LIMITED](https://appshunter.io/developer/6776233951) |

## What reviewers say

### Doo Nok

[App page](https://appshunter.io/ios/app/doo-nok/id1336825929)

**In-app purchases:** none


### LongLenAI

[App page](https://appshunter.io/ios/app/longlenai/id6776233949)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Coupon | $6.29 | one-time |
| Monthly Pass 0 | $8.19 | one-time |
| Monthly Pass 1 | $11.49 | one-time |
| Monthly Pass 2 | $16.49 | one-time |
| 15,000 Tokens | $21.99 | one-time |
| Monthly Pass 3 | $25.99 | one-time |
| 28,500 Tokens | $40.99 | one-time |
| Monthly Pass 4 | $48.49 | one-time |
| 58,000 Tokens | $81.99 | one-time |
| Monthly Pass 5 | $91.99 | one-time |


## Frequently asked questions

### Is Doo Nok free?

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

### Is LongLenAI free?

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

### Do Doo Nok or LongLenAI have ads?

LongLenAI shows ads; Doo Nok does not.

### Which is updated more often, Doo Nok or LongLenAI?

Doo Nok ships an update every 11 months, and LongLenAI every 2 weeks. Most recently, Doo Nok was updated on October 7, 2026 and LongLenAI on October 15, 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.*