Comparison

Vimi vs CogAT Test Prep

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Vimi

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
Currently charting
Read full description

Master math with Vimi, your personal AI tutor that makes learning simple, fast, and fun. Vimi figures out your level and designs a personalized path that fits you. You’ll get quick, adaptive lessons that fill in your knowledge gaps and help you feel in control again. Vimi helps you finally feel confident in class with short, engaging lessons built around your school’s curriculum, so every topic you practice matches what you’re learning in school. It’s like having a friendly local tutor who explains things clearly, no confusing terms, just simple explanations that actually make sense. With Vimi, math feels approachable and fun, thanks to a game-like experience that keeps you motivated. Each session includes short exercises that focus on what you need most, instant feedback with helpful hints and full solutions, plus a progress tracker so you can see how far you’ve come. Learn key topics including: Fractions, percentages, equations, inequalities, geometry, functions, probability, statistics, logic, and more. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

CogAT Test Prep

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
Read full description

Build your child's CogAT reasoning skills with thousands of practice questions for kindergarten through grade 5. Practice all nine CogAT reasoning skills with curiosity and confidence. CogAT Test Prep brings picture puzzles, word relationships and number challenges together in one easy-to-use app. No account needed: choose a grade, tap a category and start. THREE WAYS TO THINK Explore Verbal, Quantitative and Nonverbal reasoning. Work with picture analogies, sentence completion, classification, number patterns, figure matrices and paper folding. Practice follows your child's grade, with clear pictures for early learners and more involved reasoning for older children. A CLEARER START FOR YOUNG LEARNERS Bright new illustrations make familiar objects easier to recognize. Read prompts together, listen to English questions and take a closer look at figures. Choose a grade, tap a category and start thinking—without a complicated setup. MAKE EVERY ANSWER A LEARNING MOMENT Check the explanation after a practice question. Revisit completed sessions with the original questions and answers, and return to mistakes for another attempt. Clear diagrams and stable answer labels help children focus on the reasoning. BUILD TEST-DAY CONFIDENCE Full mock test brings all three reasoning categories into a focused session. Screening-length practice for grades 2–5 matches the length of a screening test: 54 questions across Verbal, Quantitative and Nonverbal reasoning in one sitting, with an optional 30-minute timer. Move back, skip a question or mark it for review. See answers after finishing, then explore how you approached each problem. Save unfinished sessions and continue when you're ready. SEE WHAT TO PRACTICE NEXT The parent report organizes practice results by nine reasoning skills at the selected grade. Choose a time period, notice strengths and find useful next steps. Results describe practice in this app, not an official CogAT score. MADE FOR YOUR FAMILY'S ROUTINE • Kindergarten through grade 5 • Phone and tablet • No account needed to start practicing • Most practice works offline • English practice questions • English and Spanish app interface • Optional parent-managed sign-in for synced progress • Earlier questions and answers preserved for history review Start with a picture. Discover a pattern. Build confidence for the next challenge. CogAT Test Prep is an independent practice resource and is not affiliated with or endorsed by Riverside Insights, the publisher of CogAT. CogAT is a registered trademark of its owner. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Vimi4 screens
CogAT Test Prep4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 6 level
Vimi versus CogAT Test Prep: the parameters behind the verdict, then further details
ParameterVimiCogAT Test Prep
PriceFreeFree
Rating4.5 (1.1K ratings) — better4.5 (13 ratings)
Positive reviews57.1% of reviews—
Number of ratings1.1K — better13
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree — betterFreemium
Best chart rank#129 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.616.6 — better
Further details — not scored
Size123 MB11 MB
Age rating4+4+
DeveloperVIMI ADAPTIVE LEARNING LTDNeobile LLC

Customer experience

Vimi

All ratings1,005 ratings
Positive88.0%
Neutral2.7%
Negative9.4%
Written reviews119 reviews
Positive57.1%
Neutral10.1%
Negative32.8%

CogAT Test Prep

All ratings10 ratings
Positive90.0%
Neutral10.0%
Negative0.0%

In-app purchases

10 purchases

Vimi

Subscriptions10
  • Vimi Monthly Premium1 Month trial$19.991 Month
  • summer_promotion1 Month trial$19.991 Month
  • Vimi Monthly Premium3 Days trial$19.991 Month
Show 7 more
  • Vimi Monthly Premium7 Days trial$19.991 Month
  • Vimi monthly Premium$19.991 Month
  • Vimi Monthly Premium1 Month trial$24.991 Month
  • Vimi Quarterly Premium3 Days trial$44.993 Months
  • Vimi 3 months subscription3 Days trial$44.993 Months
  • Vimi Annual Premium3 Days trial$94.901 Year
  • Vimi Premium Annual7 Days trial$154.991 Year
2 purchases

CogAT Test Prep

Subscriptions2
  • Pro Membership Monthly$5.991 Month
  • Pro Membership Yearly$19.991 Year

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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