Comparison

Kak vs Digit Whisper

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

Head to head
About

Kak

Features
Read full description

Kak is your ultimate verb-based guide to mastering Russian—verbs, grammar, vocabulary. Unlock the power of Russian language mastery with Kak, your ultimate verb-based guide. Dive into a world of over 5,000 fully conjugated Russian verbs, explore essential grammar and vocabulary lessons, and practice tasks. Key Features: - Comprehensive Verb Learning:  Kak offers a vast collection of fully conjugated Russian verbs. Learn how to use them and understand their grammatical cases. - Grammar & Vocabulary Lessons:  Enhance your language skills with detailed grammar and vocabulary lessons. Practice tasks ensure you grasp the concepts effectively. - Vocabulary Collections:  Access over 500 phrases organized into useful collections for everyday conversations. - Grammar Case Tables:   Navigate the complexities of Russian grammar cases effortlessly with our detailed tables. - Verb Search: Easily find verbs, their infinitive forms, conjugations, participles and learn their usage in sentences. - Audio Pronunciation: Listen to correct pronunciations for improved speaking skills. - AI-Powered Grammar Check (Beta): Benefit from advanced grammar checking to enhance your writing skills. Why Choose Kak: Kak is designed for learners at all levels, whether you're a beginner or looking to perfect your Russian skills. Our app is built on educational excellence and user-friendly design, making it your ideal language companion. Master the Russian language, verbs, grammar, and vocabulary effortlessly with Kak. Download today and embark on a rewarding journey to learn Russian!

About

Digit Whisper

Master number recognition in multiple languages through engaging, bite-sized gameplay. See a number word and tap the correct digits on a custom keypad. Track your progress and build streaks in a distraction-free environment.

Highlights
  • Multilingual number recognition
  • Custom number pad input
  • Progressive difficulty levels
  • Streak and accuracy tracking
  • Distraction-free interface
  • Offline play
Features
Read full description

Learn to recognize numbers in multiple languages — the fun way! DigitWhisper helps you master number recognition in German, Russian, and English through addictive, bite-sized gameplay. See a number word, tap the correct digits. It's that simple — but surprisingly challenging! HOW IT WORKS A random number appears as a word (e.g., "siebenundvierzig") Use the custom keypad to enter the digits (47) Get instant feedback and build your streak Progress through increasingly difficult levels FEATURES Three languages: German, Russian, English Custom number pad optimized for quick input Progressive difficulty levels from 0-100+ Track your streaks and accuracy Clean, distraction-free interface No ads, no subscriptions—just pure learning Works offline—practice anywhere, anytime Light and dark mode support PERFECT FOR Language learners building vocabulary Students practicing number recognition Travelers preparing for trips abroad Anyone wanting to sharpen their multilingual skills Parents teaching children numbers in different languages WHY DIGITWHISPER? Numbers are the foundation of any language, but they're often overlooked in traditional learning apps. DigitWhisper makes number recognition second nature through spaced repetition and active recall—proven learning techniques wrapped in engaging gameplay. Whether you're ordering coffee in Berlin, shopping in Moscow, or just expanding your mind, DigitWhisper gives you the confidence to understand numbers instantly in any language. Start your journey to multilingual number fluency today! Download DigitWhisper and transform those confusing number words into instant recognition.

Screenshots

Kak4 screens
Digit Whisper4 screens

Verdict

The call

The clearest difference is iOS requirement: Kak at 13.0 against Digit Whisper's 18.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Kak ships an update every 3 days, Digit Whisper every 2 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 8 level
Kak versus Digit Whisper: the parameters behind the verdict, then further details
ParameterKakDigit Whisper
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 daysEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better18.0
Further details — not scored
Size86 MB5 MB
Age rating4+4+
DeveloperINVALCRE (PRIVATE) LIMITEDFarkhod Yuldashev

In-app purchases

None

Kak

No in-app purchases

None

Digit Whisper

No in-app purchases

Questions

Is Kak free?
Kak is free to download, with no in-app purchases.
Is Digit Whisper free?
Digit Whisper is free to download, with no in-app purchases.
Do Kak or Digit Whisper have ads?
Neither Kak nor Digit Whisper shows ads.
Which is updated more often, Kak or Digit Whisper?
Kak ships an update every 3 days, and Digit Whisper every 2 days. Most recently, Kak was updated on October 27, 2026 and Digit Whisper on October 31, 2026.

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