Comparison

Tutor Lily vs Kalkulus

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

Head to head
About

Tutor Lily

Engage in natural conversations to build real language fluency. This AI tutor remembers your progress and interests, adapting sessions to your goals and mistakes. Practice real-world scenarios and receive gentle corrections for effective learning.

Highlights
  • Natural conversation practice
  • Personalized learning based on goals
  • Real-time, gentle corrections
  • Smart vocabulary building
  • Adaptive difficulty levels
  • Practice real-world scenarios
  • Pronunciation coaching
Features
Read full description

How long have you been telling yourself you'll learn English? Spanish? French? Let's make this the year it actually happens. Not from 400 owl reminders. Not from tapping pictures of fruits and animals. From real conversations — from your very first day. You'll be speaking with confidence in weeks, not years. Just 10 minutes a day with me. You speak or type. I match your level in real time. Use your target language, your native language, or a mix of both as you get more comfortable. MISTAKES ARE WELCOME It's actually how we learn. Make all your mistakes with me first. Then you won't have to make them with real people. When you slip up, I don't shame you. No red Xs. No buzzers. I give you real-time feedback on grammar, pronunciation, and word choice. I use a three-step method I call the Lily Method: I nudge, then I hint, and only then do I give you the answer. Learners fix their own mistakes 46% of the time with this method (Lyster & Ranta research). Other apps just feed you the correct answer — so you learn nothing. With me, you learn it because YOU found the answer. The biggest mistake you can make is being afraid to make one. Duolingo punishes you for mistakes — I reward you for making them. LET'S TALK ABOUT WHAT YOU LIKE Whatever you want to talk about — I'm like a friend who happens to speak 50+ languages. The movie you watched last weekend. Your day at work. The trip you're planning. Your favorite K-drama. The book you can't put down. The song stuck in your head. Personal conversations stick. Generic lessons don't. Pack me for the trip. I'll be your travel buddy who already speaks the language. Want to practice a specific moment — ordering at a Parisian café, checking into a Tokyo hotel, meeting your partner's parents? Just ask me to roleplay it. I REMEMBER YOU Other apps forget you the moment you close them. I don't. I remember the word you stumbled on last Tuesday. I remember your sister's wedding next month. I remember you work in marketing and your dog's name is Bean. Session 100 with me is smarter than session 1 — because I've been paying attention. You told me in onboarding you have a trip to Italy? Today let's talk about what you're packing. You mentioned you're nervous about a presentation? Walk me through it — I'll help you fix the rough spots. EARN STREAKS FOR REAL PRACTICE Streaks earned by real messages, not by tapping a button to keep a number alive. All the motivation. None of the guilt trips. No hearts. No leaderboards. No "you broke your streak!" notifications. 50+ LANGUAGES, NATIVE ACCENTS English, Spanish, French, German, Japanese, Korean, Chinese, Italian, Portuguese, Arabic, Russian, Hindi, Turkish, Dutch, Swedish, Polish, Thai, Vietnamese, Indonesian, Greek — and 40+ more. Each with native accent variants (British or American English, Latin American or European Spanish, etc.) — so you sound like you actually live there, not like a textbook. STOP STUDYING. START SPEAKING. Babbel scripts you. ChatGPT forgets you. A human tutor costs $30-60 an hour and needs scheduling. I'm available 24/7. I'm 50× cheaper than a private tutor. I remember every word you've ever said to me. And I'll never make you feel stupid for not knowing something — that's the whole reason you're here. Five minutes on your coffee break. Thirty on the train home. I fit your day, not the other way around. Open the app. Say hi. I'll take it from there. — Lily Privacy Policy: https://tutorlily.com/privacy License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

Kalkulus

Features
Read full description

Kalkulus, c'est le calcul mental qui devient un jeu. Guidé par Kalkulou le panda, chaque joueur progresse à son rythme, de 7 à 77 ans. Additions, soustractions, multiplications, divisions : on s'entraîne sans même s'en rendre compte, en gagnant de l'expérience à chaque partie. DES JEUX VARIÉS ET RAPIDES . Rapido : un maximum de bonnes réponses en 60 secondes . Mathzone : 3 vies, chaque erreur compte . Mathorite : pulvérise les astéroïdes avec la bonne réponse . Trouvix et Croizix : complète les grilles et les mots croisés de calculs . Memora : associe chaque chiffre à son opération POUR TOUS LES NIVEAUX Du mode Débutant au mode Expert, la difficulté s'adapte. Les plus jeunes s'amusent avec de petits nombres, les adultes se creusent la tête sur des calculs plus costauds. Un seul jeu pour toute la famille. UN DÉFI CHAQUE JOUR Un nouveau défi quotidien pour garder le rythme et progresser sans se lasser. Reviens chaque jour pour entretenir ta série et gagner plus d'expérience. PROGRESSE ET COMPARE-TOI Gagne de l'XP partout, monte de niveau, débloque des badges et grimpe dans le classement. RESPECTUEUX DES ENFANTS . Fonctionne sans création de compte . Aucune donnée personnelle identifiante demandée . Publicités non personnalisées uniquement, au contenu tout public . Aucun pistage publicitaire Kalkulus est gratuit. Bon calcul !

Screenshots

Tutor Lily4 screens
Kalkulus4 screens

Verdict

The call

The clearest difference is in-app purchases: Kalkulus at none against Tutor Lily's 15. Tutor Lily's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement 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. Tutor Lily sells 15 in-app purchases, starting at $0.99 per 7 days. Kalkulus asks for nothing beyond the download.

UpkeepUpdate frequency

Tutor Lily ships an update fortnightly, Kalkulus every 9 days. The most recent releases landed on October 23, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Tutor Lily versus Kalkulus: the parameters behind the verdict, then further details
ParameterTutor LilyKalkulus
PriceFreeFree
Rating4.7 (242 ratings) — better—
Positive reviews45.9% of reviews—
Number of ratings242 — better—
Update frequencyFortnightlyEvery 9 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size60 MB107 MB
Age rating4+4+
DeveloperTutor Lily Inc.cornelius vincent

Bugs and requests

Tutor Lily

Reported bugs

27 issues
  • App settings change and can't contact support
  • Recent update removed roleplay/topics
  • App is buggy
  • Makes users answer same questions each time
  • App locked behind paywall without notice
Show 22 more
  • Had to give payment info for free trial
  • Stopped working after paying for pro
  • No way to restore purchases
  • Automatic recording function is very poor
  • Correct statements understood and written incorrectly
  • App has loading dots without allowing use
  • Hands-free mode isn't useful
  • Translations are incorrect at times
  • Speak option only works best with built-in phone voice to text
  • Cancelled subscription but still got charged
  • No customer support reply
  • Voices are very robotic
  • Questions asked are very artificial
  • Hands-free mode is glitchy and poor
  • Message disappears/gets deleted when clicking to see mistakes
  • Freezes on 'evaluating sentence…'
  • Loading dots forever
  • Resetting conversation is only fix
  • Doesn't change input language to German for voice
  • Fails to record first response or delay in submitting
  • Doesn't know how to use formal 'You'
  • No sound on iPhone 13

Requested features

18 requests
  • Option to watch ads for more messages
  • Ability to see pre-corrected version of messages
  • Add Icelandic language
  • Improve hands-free mode
  • More natural sounding voices
Show 13 more
  • Fix slow audio for German and French
  • Provide more phrases for repetition
  • Better support for absolute beginners
  • Allow users to restore purchases
  • Improve automatic recording function
  • Fix formal 'You' usage
  • Fix delay in recording submissions
  • Allow viewing of original message before correction
  • Offer a cheaper alternative
  • Fix sound issues on iPhone 13
  • Improve input language switching
  • Make it easier to use while driving
  • Increase chat limit or offer unlimited option

Kalkulus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

15 purchases

Tutor Lily

Subscriptions15
  • Weekly PRO $1$0.997 Days
  • Weekly PRO Membership$4.997 Days
  • Monthly PRO Membership$9.991 Month
Show 12 more
  • Monthly PRO Membership$11.991 Month
  • Monthly PRO Membership$19.991 Month
  • Monthly PRO Membership$29.991 Month
  • Annual PRO Discount3 Days trial$29.991 Year
  • Annual PRO Discount3 Days trial$49.991 Year
  • 6-Month PRO Membership$56.996 Months
  • Annual PRO Membership3 Days trial$69.991 Year
  • Annual PRO Discount3 Days trial$71.991 Year
  • Annual PRO Membership$83.991 Year
  • Annual PRO Membership3 Days trial$83.991 Year
  • Annual PRO Membership3 Days trial$89.991 Year
  • Annual PRO Membership7 Days trial$169.991 Year
None

Kalkulus

No in-app purchases

Questions

Is Tutor Lily free?
Tutor Lily is free to download, with in-app purchases available.
Is Kalkulus free?
Kalkulus is free to download, with no in-app purchases.
Do Tutor Lily or Kalkulus have ads?
Kalkulus shows ads; Tutor Lily does not.
Which is updated more often, Tutor Lily or Kalkulus?
Tutor Lily ships an update fortnightly, and Kalkulus every 9 days. Most recently, Tutor Lily was updated on October 23, 2026 and Kalkulus on October 7, 2026.

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