LingoTok vs Calculus AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LingoTok
This app offers personalized language tutoring with interactive voice calls. It adapts to your learning pace, allowing you to ask questions and explore detailed lessons. Unlock smarter learning with a private AI tutor.
- AI-powered language tutoring
- Interactive voice calls
- Personalized learning pace
- Unlimited tutoring options
- Full premium support
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Learn a new language with the world’s fastest language learning app! Get a private language tutor that goes through all your language lessons with you. Ask Anything. Learn Everything. Whether it’s a tough concept, a detailed lesson, or a quick clarification, LingoTok adapts to your pace. Interactive Voice Calls! • $29.99/week – UNLIMITED per week or • $49.99/quarter - UNLIMITED per week Enjoy real‑time, voice‑based tutoring and full premium support. Contact us: support@zerobillion.ai Learn more: Privacy Policy and Terms of Service (EULA) – https://zerobillion.notion.site/Terms-Of-Service-14d353ad884580e7baadf9694d2c1a06 Unlock smarter learning today!
Calculus AI
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Calculus AI - Math Solver turns any calculus problem into a step-by-step solution. Snap a photo of your homework, type a question, or paste an equation - the AI solves it in seconds and shows every step, so you learn the method instead of copying an answer. SOLVE ANY CALCULUS PROBLEM - Limits, continuity, derivatives, integrals, differential equations and their applications - Photo, gallery, typed text, or multi-page crop - works with handwritten homework and textbook pages - Every solution includes the method, the working steps, the final answer, key concepts and an answer check - Charts rendered automatically for every applicable solution LEARN, DON'T JUST COPY - AI Tutor - a Socratic tutor that guides you to the answer instead of blurting it out - Flashcards - AI-generated study cards with mastery tracking - Quiz - generate practice tests by topic and difficulty, with an explanation for every answer - Cheat Sheet - AI-generated formula reference for each topic - Searchable solution history, favourites, and PDF export for revision BUILT FOR STUDENTS - 32 languages - study calculus in your own language - Dark and light themes - Export to PDF or share with your study group START SOLVING - No account, no ads. Three full solutions are included, then Calculus AI Pro unlocks unlimited solutions, the AI Tutor, Flashcards, Quiz and Cheat Sheets. Privacy: your photos and questions are sent to Google Gemini (Firebase AI Logic) to generate solutions. See our Privacy Policy for details. Calculus AI Pro is an auto-renewable subscription. Payment is charged to your Apple ID at confirmation of purchase. It renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/calcai-privacy/home
Screenshots
Verdict
The clearest difference is update cadence: LingoTok at every 8 days against Calculus AI's every 4 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
Both are free to download. LingoTok sells 10 in-app purchases, starting at $6.99 per 7 days and Calculus AI sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
LingoTok ships an update every 8 days, Calculus AI every 4 weeks. The most recent releases landed on November 12, 2026 and November 6, 2026 respectively.
| Parameter | LingoTok | Calculus AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (10K ratings) — better | — |
| Positive reviews | 19.0% of reviews | — |
| Number of ratings | 10K — better | — |
| Update frequency | Every 8 days — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 16 | 15.0 — better |
| Further details — not scored | ||
| Size | 84 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Zero Billion, Inc. | Tat Wah Chan |
Bugs and requests
LingoTok
Reported bugs
2 issues- Lack of certain language options
- Unclear pricing structure
Requested features
2 requests- Add more language options
- Offer free trial period
Calculus AI
Not enough reviews yet to summarise bugs or requests.
In-app purchases
LingoTok
- Gauth AI Pro$6.997 Days
- LingoTok Premium7 Days trial$9.997 Days
- Gauth AI Unlimited$12.997 Days
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- Unlimited (Monthly)3 Days trial$19.991 Month
- LingoTok Pro Monthly7 Days trial$29.991 Month
- LingoTok Premium$29.993 Months
- LingoTok Premium (Monthly)$49.991 Month
- LingoTok Premium$49.993 Months
- LingoTok Pro Yearly7 Days trial$199.991 Year
- LingoTok Pro Yearly 30-Day1 Month trial$199.991 Year
Calculus AI
- Calculus AI - Smart Solver Weekly3 Days trial$4.997 Days
- Calculus AI - Smart Solver Yearly3 Days trial$29.991 Year









