Comparison

Topical Dictionary vs Mechanical Engineering Lab

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

Head to head
About

Topical Dictionary

Easily create custom dictionaries with over 400,000 words, descriptions, and examples. Ideal for expanding vocabulary while reading, researching, or watching media in English. Offers a dedicated tool for word study, superior to generic note-taking apps.

Highlights
  • Create custom dictionaries
  • Over 400,000 words
  • Word descriptions and examples
  • Vocabulary expansion tool
  • Dedicated word study
Features
Read full description

Start with vocabulary chosen for youβ€”or create collections around the subjects that matter to you. Topical Dictionary combines ready-made English vocabulary, personal topic dictionaries, and focused word-card games. Explore a collection, copy it to make it your own, then practice every word without losing its meaning or context. EXPLORE CURATED DICTIONARIES Discover carefully selected English vocabulary organized from A1 to C1. Build everyday foundations, strengthen communication, explore advanced language, or practice practical phrasal verbs. COPY AND CUSTOMIZE Copy any curated dictionary to your personal library. Its original version stays unchanged while your copy becomes fully editableβ€”add words, rewrite definitions, update examples, or adapt the collection to your goals. LEARN WITH WORD CARDS Turn one dictionary or several collections into a focused practice session. Reveal definitions and examples one card at a time, revisit previous games, and continue building familiarity with the words you saved. BUILD VOCABULARY BY TOPIC Create personal dictionaries for travel, school, technology, work, books, films, exams, or any subject you choose. Add a title and description so every collection has a clear purpose. SAVE WORDS IN CONTEXT Keep each word with its definition, part of speech, and an example sentence. Enter every detail yourself or use online lookup to fill the fields faster, then edit the result whenever you want. FIND AND ORGANIZE Search your personal dictionaries or browse curated collections by title, description, and matching words. Sort your library and mark important dictionaries as favorites. YOUR VOCABULARY, AVAILABLE TO YOU Sign in with Apple, Google, or email. Your personal dictionaries stay linked to your account. Manage your profile, password, and account directly from the app. DESIGNED FOR iOS Enjoy a modern SwiftUI interface with English and Turkish localization, accessibility support, and system, light, and dark appearance options.

About

Mechanical Engineering Lab

Features
Read full description

Mechanical Engineering Visual Learning Studio is the ultimate interactive reference and study companion for mechanical engineering students, working engineers, and educators. Whether you're preparing for exams, refreshing your fundamentals, or exploring how real machines work, this app delivers clear visual explanations across every core discipline β€” all in one place. WHAT'S INSIDE Illustrated Gallery Browse 30+ hand-crafted engineering diagrams spanning: - Statics and structural analysis (trusses, free-body diagrams) - Strength of materials (Mohr's circle, column buckling) - Thermodynamics (Rankine cycle, steam turbines) - Fluid mechanics (boundary layers, Venturi meters) - Machine design (gears, V-belts, disc brakes) - Mechanisms (cam-follower systems, linkages) - Control systems (Bode plots, PID) - Real-world systems (4-stroke engines, robotic arms, differentials, HVAC, planetary gears, wind turbines, and more) Each illustration is interactive. Tap any diagram for a full-screen view with a detailed explanation and key concepts. Structured Curriculum Follow a guided learning path through core mechanical engineering topics. Each module breaks complex subjects into digestible lessons with clear explanations and worked examples. Simulation Lab Step into the Lab and run interactive simulations. Visualize how parameters change system behavior in real time, ideal for building engineering intuition beyond the textbook. Sample Design Cases Explore 8 complete engineering use cases, from hydraulic circuit design to PID-controlled pump systems, showing how real problems are scoped, analyzed, and solved from start to finish. Reference Library Quick-access formulas, tables, and material property data across all major mechanical engineering disciplines. Learning Guide New to the app? The Guide tab walks you through every feature so you can hit the ground running. PERFECT FOR - Undergraduate and graduate mechanical engineering students - Engineers reviewing fundamentals for the FE or PE exam - Professors and instructors looking for visual teaching aids - Curious learners who want to understand how machines work TOPICS COVERED Statics, Dynamics, Strength of Materials, Thermodynamics, Fluid Mechanics, Heat Transfer, Machine Design, Mechanisms, Control Systems, Manufacturing Processes, Engineering Materials Download today and start seeing mechanical engineering, not just reading it.

Screenshots

Topical Dictionary4 screens
Mechanical Engineering Lab4 screens

Verdict

The call

The clearest difference is price: Topical Dictionary at Free against Mechanical Engineering Lab's $2.99. Mechanical Engineering Lab's advantage is iOS requirement (17.0 vs 26.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Topical Dictionary is free to download; Mechanical Engineering Lab costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Topical Dictionary ships an update fortnightly, Mechanical Engineering Lab monthly. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

Scorecard2 real differences Β· 6 level
Topical Dictionary versus Mechanical Engineering Lab: the parameters behind the verdict, then further details
ParameterTopical DictionaryMechanical Engineering Lab
PriceFree β€” better$2.99
Positive reviews100.0% of reviewsβ€”
Update frequencyFortnightly β€” betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supportedβ€”
DevicesiPhoneiPhone, iPad β€” better
Requires iOS26.017.0 β€” better
Further details β€” not scored
Size19 MB5 MB
Age rating4+4+
DeveloperIbrahim Ethem KaraliYuhsiu Lai

In-app purchases

None

Topical Dictionary

No in-app purchases

None

Mechanical Engineering Lab

No in-app purchases

Questions

Is Topical Dictionary free?
Topical Dictionary is free to download, with no in-app purchases.
Is Mechanical Engineering Lab free?
Mechanical Engineering Lab costs $2.99, with no in-app purchases.
Do Topical Dictionary or Mechanical Engineering Lab have ads?
Neither Topical Dictionary nor Mechanical Engineering Lab shows ads.
Which is updated more often, Topical Dictionary or Mechanical Engineering Lab?
Topical Dictionary ships an update fortnightly, and Mechanical Engineering Lab monthly. Most recently, Topical Dictionary was updated on September 9, 2026 and Mechanical Engineering Lab on September 17, 2026.

Other comparisons