# Vimi vs CogAT Test Prep

The clearest difference is ads: CogAT Test Prep at none against Vimi's shown. Vimi's advantage is monetization model (free vs freemium) and ratings volume (1.1K vs 13). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. Vimi sells 10 in-app purchases, starting at $19.99 per month and CogAT Test Prep sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for Vimi against 4.5 for CogAT Test Prep. That said, the two scores are not equally well evidenced: Vimi has 1.1K ratings behind it against 13, so its average is the more settled of the two.

Vimi ships an update every 9 days, CogAT Test Prep every 3 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Vimi | CogAT Test Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.1K ratings)](https://appshunter.io/ios/app/vimi-my-math-tutor/id6748574236/reviews)** | [4.5 (13 ratings)](https://appshunter.io/ios/app/cogat-test-prep/id6783229942/reviews) |
| Number of ratings | **1.1K** | 13 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Best chart rank | **#128** | — |
| Size | 123 MB | 11 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [VIMI ADAPTIVE LEARNING LTD](https://appshunter.io/developer/1826373818) | [Neobile LLC](https://appshunter.io/developer/1080490647) |

## What reviewers say

### Vimi

[App page](https://appshunter.io/ios/app/vimi-my-math-tutor/id6748574236)

**Currently charting:** #128 Top Free · Education (US App Store)

This AI-powered math tutor creates personalized learning paths to help users master math concepts. It offers adaptive lessons, clear explanations, and engaging exercises tailored to school curricula, making learning approachable and fun.

**Highlights:** Personalized learning paths, Adaptive lessons, Curriculum-aligned content, Clear explanations, Engaging exercises, Instant feedback and solutions, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vimi Monthly Premium | $19.99 | per month |
| summer_promotion | $19.99 | per month |
| Vimi Monthly Premium | $19.99 | per month |
| Vimi Monthly Premium | $19.99 | per month |
| Vimi monthly Premium | $19.99 | per month |
| Vimi Monthly Premium | $24.99 | per month |
| Vimi Quarterly Premium | $44.99 | per 3 months |
| Vimi 3 months subscription | $44.99 | per 3 months |
| Vimi Annual Premium | $94.90 | per year |
| Vimi Premium Annual | $154.99 | per year |


### CogAT Test Prep

[App page](https://appshunter.io/ios/app/cogat-test-prep/id6783229942)

Prepare children in grades K-5 for cognitive ability tests with engaging practice sessions. Covers verbal, quantitative, and nonverbal reasoning with instant feedback and explanations. Offers free daily practice and a premium subscription for unlimited access.

**Highlights:** Verbal, quantitative, and nonverbal reasoning practice, Step-by-step question explanations, Grade-level specific practice, Progress tracking, Unlimited practice with premium, Full-length mock tests, Parent reports

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Membership Monthly | $5.99 | per month |
| Pro Membership Yearly | $19.99 | per year |


## Frequently asked questions

### Is Vimi free?

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

### Is CogAT Test Prep free?

CogAT Test Prep is free to download, with in-app purchases available.

### Which has better reviews, Vimi or CogAT Test Prep?

Vimi is rated higher. Vimi averages 4.5 out of 5 from 1.1K ratings, while CogAT Test Prep averages 4.5 from 13 ratings.

### Do Vimi or CogAT Test Prep have ads?

Vimi shows ads; CogAT Test Prep does not.

### Which is updated more often, Vimi or CogAT Test Prep?

Vimi ships an update every 9 days, and CogAT Test Prep every 3 weeks. Most recently, Vimi was updated on November 8, 2026 and CogAT Test Prep on November 5, 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.*