CertAI vs Lingui
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
CertAI
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CertAI is the multi-certification AI study platform built for serious IT professionals. Prepare for AWS Solutions Architect, AWS Developer, Azure AZ-900, and CompTIA Security+ โ all in one app. WHY CERTAI WORKS AI Socratic Tutor Don't just memorize โ understand. Our AI tutor uses the Socratic method to guide you to answers through questions, building deep comprehension that sticks on exam day. Pass Probability Prediction Know exactly where you stand. CertAI analyzes your study data in real time and predicts your pass probability with domain-by-domain breakdowns. No more guessing. SM-2 Spaced Repetition Study smarter, not harder. Our scientifically-proven algorithm schedules reviews right before you forget, converting short-term memory into long-term mastery. Realistic Mock Exams Practice under real exam conditions โ 65 questions, 130-minute timer, scored to the same standard as the actual test. Domain-level performance analysis included. CERTIFICATIONS SUPPORTED - AWS Solutions Architect Associate (SAA-C03) - AWS Developer Associate (DVA-C02) - Microsoft Azure Fundamentals (AZ-900) - CompTIA Security+ (SY0-701) More certifications coming soon. FREE FEATURES - Quiz practice with spaced repetition - 3 AI tutor questions per day - Progress tracking and study streaks - Pass probability prediction PRO FEATURES - Unlimited AI tutor conversations - Full question bank access (450+ questions) - Unlimited mock exams with detailed reports - AI Wrong Answer Analysis - Personalized AI Study Plan - Custom study reminders - Pass Guarantee PASS GUARANTEE Study with CertAI Pro for 30 days and don't pass? We'll extend your subscription free until you do. That's how confident we are in our system. PRICING - Monthly: $14.99/month - Yearly: $79.99/year (save 55%) - 3-day free trial on all plans Download CertAI today and start your certification journey with AI. Privacy Policy: https://www.junsoft.org Terms of Use: https://www.junsoft.org
Lingui
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Lingui transforms language learning into a simple, fast and natural habit. Thanks to its widget, you discover new words every day, their translation and small quizzes directly from your screen. In a few seconds, you progress without having to launch the application. Lingui is based on a simple idea: learn a little every day, effortlessly. Instead of long lessons, the app relies on micro-learning to help you enrich your vocabulary in a regular and sustainable way. With Lingui, you can: learn new words every day see their translation instantly test your knowledge with quick quizzes track your progress maintain your daily streak customize your languages and learning themes The widget is at the heart of the experience. It allows you to learn directly from your home screen or locked screen, to integrate languages into your daily life in a simple and effective way. Lingui is ideal for: the beginners the people employed those who want to learn without constraint users who like short and efficient formats The application also allows you to customize your learning according to your preferences. Choose your languages, adapt the number of words per day and explore different themes such as travel, work or everyday conversations. To go further, Lingui also offers premium features to enjoy an enriched experience. Install Lingui, add the widget and start learning a language a little every day. Terms of Use (EULA): https://www.notion.so/Terms-of-Use-EULA-Lingui-32d334609259807894d4d65c155d7f53 Privacy Policy: https://www.notion.so/Privacy-Policy-Lingui-32d3346092598006bd00fbde9eb0586b?source=copy_link
Screenshots
Verdict
The clearest difference is in-app purchases: Lingui at none against CertAI's 2. Lingui also leads on update cadence (every 2 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. CertAI sells 2 in-app purchases, starting at $19.99 per month. Lingui asks for nothing beyond the download.
CertAI ships an update every 3 weeks, Lingui every 2 days. The most recent releases landed on October 28, 2026 and October 7, 2026 respectively.
| Parameter | CertAI | Lingui |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 days โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone | iPhone, iPad โ better |
| Requires iOS | 17.0 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 8 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | JunSoft Mobile Inc. | Maxime Boschert |
In-app purchases
CertAI
- CertAI Pro Monthly3 Days trial$19.991 Month
- CertAI Pro Yearly3 Days trial$140.991 Year
Lingui
No in-app purchases









