Comparison

KEES Maths vs 990prep

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

Head to head
About

KEES Maths

This app acts as a virtual math tutor, available 24/7 to help with exercises. It provides clear explanations, step-by-step guidance, and detailed solutions using powerful algorithms to build confidence in mathematics.

Highlights
  • Virtual math professor
  • 24/7 availability
  • Step-by-step problem solving
  • Clear explanations with diagrams
  • Algorithmic solutions ('Kees')
  • Builds math confidence
Features
Read full description

KEES…Facilitez-vous la vie avec cette appli ! ● Elle joue le rôle d’un professeur virtuel de mathématiques…disponible 7 /7j et H24…toujours à portée de main dans votre poche ou votre cartable ! Et ce pour un prix dérisoire : 9,99€/mois représente environ 12 minutes de cours individuel avec un professeur particulier de soutien scolaire ! ● Vous avez une difficulté dans un exercice de mathématiques ? Lancez l’appli, et laissez vous guider : A l’aide de questions-réponses ce professeur virtuel reconnaitra le type d’exercice et vous aidera sous plusieurs formes : - Décryptage du cours et des théorèmes avec un langage simple et des schémas… - Guide de résolution avec des méthodes, astuces et exemples…vous n’aurez alors plus qu’à adapter la méthode donnée par l’appli à votre exercice … - Il vous proposera souvent des « Kees » : ce sont des algorithmes puissants qui vous détailleront toutes les étapes de la rédaction et vous afficheront les solutions détaillées, tout en vous expliquant pourquoi on a utilisé telle ou telle méthode ou astuce… Il n'y aura alors plus qu'à recopier l'écran ! - Vous ne bloquerez plus en maths, vous apprendrez en reprenant confiance… ● Les mathématiques ne sont pas compliquées quand on possède : - une explication claire détaillant tous les cas possibles… - Un professeur virtuel toujours disponible pour nous aider quand on en a besoin… - Une bonne méthode de révision… ● Application sans publicité ! Conditions d’utilisation (CLUF) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

990prep

Prepare for the TOEIC® exam with a comprehensive training app. It offers numerous practice exercises, vocabulary flashcards, and grammar lessons designed to improve your score. Instant feedback helps you learn from mistakes.

Highlights
  • 240 Practice Exercises
  • 1,000+ Vocabulary Flashcards
  • 100+ Grammar Lessons
  • Instant Corrections
  • Progress Tracking
Features
Read full description

Prepare for the TOEIC® with 990prep — the simplest way to reach your target score. 240 Practice Exercises Train with 240 exercises. Get instant corrections and learn from every mistake. 1,000+ TOEIC® Vocabulary Flashcards Learn the words that show up on the TOEIC®. Our flashcard system helps you remember them fast. 100+ Grammar Lessons Short, clear lessons built for the TOEIC®. No fluff, just what you need. Premium is an auto-renewable subscription. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://990prep.com/en/privacy

Screenshots

KEES Maths4 screens
990prep4 screens

Verdict

The call

The clearest difference is monetization model: KEES Maths at free against 990prep's freemium. 990prep's advantage is update cadence (every 9 days vs every 6 weeks). On price, ads, 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. KEES Maths sells 4 in-app purchases, starting at $8.99 per month and 990prep sells 2 in-app purchases, starting at $44.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

KEES Maths ships an update every 6 weeks, 990prep every 9 days. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

Scorecard2 real differences · 8 level
KEES Maths versus 990prep: the parameters behind the verdict, then further details
ParameterKEES Maths990prep
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 6 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size67 MB85 MB
Age rating4+4+
Developerjulien deversJustin De Sio

Customer experience

KEES Maths

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%

990prep

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

KEES Maths

Subscriptions4
  • Mensuel$8.991 Month
  • Trimestriel$22.993 Months
  • Semestriel$44.996 Months
Show 1 more
  • Annuel$79.991 Year
2 purchases

990prep

Subscriptions2
  • Monthly Premium3 Days trial$44.991 Month
  • Annual Premium3 Days trial$179.001 Year

Questions

Is KEES Maths free?
KEES Maths is free to download, with in-app purchases available.
Is 990prep free?
990prep is free to download, with in-app purchases available.
Do KEES Maths or 990prep have ads?
Neither KEES Maths nor 990prep shows ads.
Which is updated more often, KEES Maths or 990prep?
KEES Maths ships an update every 6 weeks, and 990prep every 9 days. Most recently, KEES Maths was updated on November 2, 2026 and 990prep on November 9, 2026.

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