# Vinbar vs Duo ABC

The clearest difference is in-app purchases: Vinbar at none against Duo ABC's 8. Vinbar also leads on iOS requirement (9.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Duo ABC sells 8 in-app purchases, starting at $1.49 per 3 months. Vinbar asks for nothing beyond the download.

Vinbar ships an update every 10 days, Duo ABC every 3 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Vinbar | Duo ABC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (21 ratings)](https://appshunter.io/ios/app/duo-abc/id1594001123/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 114 MB | 158 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [VIET TECHNOLOGY ELECTRONIC TRADING JOINT STOCK COMPANY](https://appshunter.io/developer/1455451981) | [nguyen thanh](https://appshunter.io/developer/1481436893) |

## What reviewers say

### Vinbar

[App page](https://appshunter.io/ios/app/vinbar/id1489272998)

This app provides comprehensive guides for making various beverages, including bubble tea and coffee. It also offers insights into business planning for beverage ventures, helping users launch effectively with minimal investment.

**Highlights:** Beverage preparation guides, Bubble tea recipes, Coffee drink recipes, Business planning for beverage sales, Cost-effective business strategies

**Features:** macOS Compatibility

**In-app purchases:** none


### Duo ABC

[App page](https://appshunter.io/ios/app/duo-abc/id1594001123)

This app helps 10th-grade students master English with interactive tests and lessons. It offers offline access and allows for self-paced learning, making it a convenient tool for academic success.

**Highlights:** Offline Access, Interactive Tests, Self-paced Learning, Teacher-Friendly Interface, Grade 10 English Mastery

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Months VIP | $1.49 | per 3 months |
| Learning Premium Monthly Plan | $1.99 | per month |
| One Month VIP | $4.99 | per month |
| Learning Premium HalfYear Plan | $5.99 | per 6 months |
| Learning Premium Annual Plan | $9.99 | per year |
| 1 Year VIP | $24.99 | per year |
| Six Months VIP | $24.99 | per 6 months |
| No ads Pack | $14.99 | one-time |


## Frequently asked questions

### Is Vinbar free?

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

### Is Duo ABC free?

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

### Do Vinbar or Duo ABC have ads?

Neither Vinbar nor Duo ABC shows ads.

### Which is updated more often, Vinbar or Duo ABC?

Vinbar ships an update every 10 days, and Duo ABC every 3 weeks. Most recently, Vinbar was updated on October 29, 2026 and Duo ABC on October 27, 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.*