iGearbox vs Learn Russian
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iGearbox
This app provides interactive tools to calculate gearbox ratios for regular and planetary gearboxes. It features a drag-and-drop design environment for gear trains and a dynamic graphic simulation for planetary gear sets, aiding in understanding and calculation.
- Interactive gear train design
- Planetary gear set simulation
- Ratio and speed calculations
- Multiple gear train configurations
- Dynamic component motion animations
- Symbolic ratio equations
- Dropbox data upload
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iGearbox is an ideal educational App to interactively calculate the gearbox ratio for regular and planetary gearboxes. It offers two main tools: 1) Gear Train Tool A touch drag & drop-based design area that you can select the gears from the library, assemble, and calculate the ratio and speeds of each gear and the whole gear train. 2) Planetary Gear Set Tool An interactive and dynamic graphic based environment to learn about the planetary gear sets with different configurations and calculate ratios and the gearbox output. User selects the stationary, the input and the output parts, and observes the motion of gear set components in action. Entering the number of ring and sun teeth, the app calculates the ratio and the gearbox output for each configuration. Also, the symbolic ratio relation of the gearbox will be shown for each configuration. ******** Features ********* Gear Train Tool: - Touch/ drag & drop-based design environment - Multiple gear train configuration (up to 8 gears in train) - Ratio and speed calculations for each gear and the whole gear train Planetary Tool: - 6 different configurations. i.e., each component (ring, sun, planets arm) can be selected as stationary, input, or output components - Dynamic interactive motion of the components for each configuration (Animations) - Symbolic ratio equation for each configuration - Ratio calculation for each case based on the sun and ring # of teeth - Output calculations based on the gear configuration and specification - Planetary gear set formulations as a help document - Adjustable rotating speed for the animations of the gearset - Dropbox upload of screenshot and data ******************************* iGearbox is a perfect tool for instructors to teach and show the basics and fundamental concepts of regular and planetary gearboxes. Connecting the device to the monitor or projector, instructors can present the animations of the gearbox for different configurations. ******************************* iGearbox is a universal App that works on iPad, iPhone, and iPod Touch. You will be able to install the App on all these devices when you buy one copy. Disclaimer: iGearbox is developed to be used for educational purposes. Although the calculations done by this App were made with great care, it may contain errors or inaccuracies. Using the results of the calculations is the sole responsibility of the user.
Learn Russian
This app helps Arabic speakers learn Russian offline through structured lessons, realistic conversations, and interactive quizzes. It covers reading, listening, speaking, and writing skills with features like flashcards and short stories to build vocabulary and confidence.
- Structured lessons from basic to advanced
- Realistic audio and text conversations
- Short stories for vocabulary expansion
- Interactive quizzes for assessment
- Flashcards for memorization
- Listening practice with Arabic translations
- Night mode for comfortable study
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Master the Russian language from Cyrillic script to confident everyday conversations! Learn Russian Offline is the complete, structured self-study course designed for beginners and intermediate learners who want to speak, read, and understand Russian fluently without internet. Overcome the myth that Russian is impossibly difficult! Our proven step-by-step curriculum breaks down the Cyrillic alphabet, demystifies the 6 Russian grammar cases, explains verb aspects clearly, and builds an active vocabulary of thousands of high-frequency words. COMPLETE RUSSIAN CURRICULUM: - Cyrillic Alphabet Masterclass: Learn to recognize, read, and write all 33 Russian letters with phonetic guides, audio examples, and stroke instructions. - 6 Russian Grammar Cases Made Easy: Clear, logical explanations with visual tables for Nominative, Accusative, Genitive, Dative, Instrumental, and Prepositional cases. - Verb Conjugations & Aspects: Master the crucial difference between Perfective and Imperfective verbs across past, present, and future tenses. - 3,000+ Core Vocabulary Words: Essential words and idioms grouped by everyday topics like dining, shopping, transportation, housing, and social life. - Realistic Native Dialogues: Natural conversational audio clips with synchronized bilingual text to train your ear and speaking rhythm. - Engaging Short Stories: Graded bilingual reading passages with comprehension checks to learn vocabulary in authentic cultural context. SPEAK CONFIDENTLY WITH NATIVE AUDIO: - Studio-Recorded Native Pronunciation: Master Russian vowel reduction, soft and hard consonants, and natural sentence intonation. - Audio Playback Speed Control: Slow down audio recordings to distinguish tricky consonant clusters and case endings. - Active Speaking Practice: Repeat practical phrases aloud to build muscle memory and conversational confidence. SCIENTIFIC RETENTION & INTERACTIVE TESTS: - Gamified Quizzes & Drills: Test your recall with multiple-choice exercises, case ending fill-ins, and dialogue comprehension. - Spaced Repetition (SRS) Flashcards: Scientifically timed review intervals lock Russian vocabulary into your long-term memory. - Streak & Milestone Tracking: Stay motivated with daily learning streaks, achievement stats, and personal goals. 100% OFFLINE MASTERY & PRIVACY GUARANTEE: - Zero Cellular Data Usage: Download lessons once and practice anywhere—on flights, trains, or daily commutes without Wi-Fi. - Privacy-First Architecture: No registration or personal data collection; all your study progress stays strictly on your device. Download Learn Russian Offline today and speak Russian with genuine confidence wherever you go!
Screenshots
Verdict
The clearest difference is price: Learn Russian at Free against iGearbox's $4.99. Learn Russian also leads on rating (4.5 vs 3.0) and update cadence (every 6 weeks vs every 55 months). iGearbox's advantage is ads (none vs shown) and ratings volume (6 vs 2). On 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
Learn Russian is free to download; iGearbox costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Learn Russian holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively.
iGearbox ships an update every 55 months, Learn Russian every 6 weeks. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.
| Parameter | iGearbox | Learn Russian |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 3.0 (6 ratings) | 4.5 (2 ratings) — better |
| Positive reviews | 16.7% of reviews | — |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 55 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 12 MB | 107 MB |
| Age rating | +4 | 4+ |
| Developer | Motionics LLC | Nagy Solaiman |
Customer experience
iGearbox
Learn Russian
In-app purchases
iGearbox
No in-app purchases
Learn Russian
No in-app purchases
Questions
Is iGearbox free?
Is Learn Russian free?
Which has better reviews, iGearbox or Learn Russian?
Do iGearbox or Learn Russian have ads?
Which is updated more often, iGearbox or Learn Russian?
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