# Công Thức Tiếng Anh vs Verbform

The clearest difference is in-app purchases: Công Thức Tiếng Anh at none against Verbform's 2. Công Thức Tiếng Anh also leads on iOS requirement (15.0 vs 17.0). Verbform's advantage is ads (none vs shown) and update cadence (monthly vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Verbform sells 2 in-app purchases, starting at $3.99 per month. Công Thức Tiếng Anh asks for nothing beyond the download.

Công Thức Tiếng Anh ships an update every 5 months, Verbform monthly. The most recent releases landed on October 26, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Công Thức Tiếng Anh | Verbform |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/verbform-irregular-verbs/id1326005174/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | — | Freemium |
| Size | 5 MB | 17 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Khanh Nguyen](https://appshunter.io/developer/1125892853) | [Aleksey Cherepanov](https://appshunter.io/developer/1190544972) |

## What reviewers say

### Công Thức Tiếng Anh

[App page](https://appshunter.io/ios/app/cong-thuc-tieng-anh/id1125892854)

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

**In-app purchases:** none


### Verbform

[App page](https://appshunter.io/ios/app/verbform-irregular-verbs/id1326005174)

Master English irregular verbs with focused drills and spaced repetition. Track your progress and improve grammar for exams and professional use. Fits into a busy schedule with short daily sessions.

**Highlights:** Drills 200 common irregular verbs, Tests base, past simple, past participle, Spaced repetition learning, 5-minute daily sessions, Progress tracking and mastery states, Home screen widget

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |
| Yearly Premium | $24.99 | per year |


## Frequently asked questions

### Is Công Thức Tiếng Anh free?

Công Thức Tiếng Anh is free to download, with no in-app purchases.

### Is Verbform free?

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

### Do Công Thức Tiếng Anh or Verbform have ads?

Công Thức Tiếng Anh shows ads; Verbform does not.

### Which is updated more often, Công Thức Tiếng Anh or Verbform?

Công Thức Tiếng Anh ships an update every 5 months, and Verbform monthly. Most recently, Công Thức Tiếng Anh was updated on October 26, 2026 and Verbform on November 2, 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.*