Words vs mpolyco
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Words
Master English and German with engaging exercises and personalized training. Learn new words in just 20 minutes a day, track your progress, and study offline or on the go.
- 10 unique exercises
- Ready-made & custom lessons
- Built-in dictionary
- Accurate pronunciations
- Smart learning algorithm
- Offline mode
- Hands-free mode
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Words - Your Ultimate Language Learning Companion! TOP App of 2014 and Best New App (April 2014) With over 10 years of experience, we've created an app that is motivational, easy to use, and built for your success. Do you want to master a new language quickly and confidently? Trusted by over 3.000.000 users, Words is your best choice for learning English and German. Why Words is the best app: - 10 Unique Exercises: Master specific skills with short and fun lessons. - Ready-made & Custom Lessons: Learn with expert-created lessons or make your own. - Built-In Dictionary & Examples: Get instant translations and see word usage. - Accurate Pronunciations for all words and examples. - Smart Learning Algorithm: Personalised training for faster learning. - Achievements & Statistics: Track progress, earn rewards and stay motivated. - Hands-Free Mode: Learn on the go while shopping, walking, or commuting. - Offline Mode: Study anywhere, even without the internet. - iCloud Sync: Learn across all your devices. - Unlock Your Potential in Just 20 Minutes a Day. Make the most of your free time with Words. Learn new words only 20 minutes a day and boost your language fluency. Improve your language skills. Engaging exercises make learning feel like play. Each session targets skills like listening, spelling, and speaking, while our smart algorithm helps you practice tricky words until you master them. Earn points, win rewards, and see your progress grow! Thematic Blocks. Tailor your learning to what's most relevant right now, from people, food, and health to nature, clothing, and money and many more. Superfood for Your Brain. Join millions of users who are improving their language skills and building strong learning habits. Words is your fastest path to a language fluency. Subscription Information The subscription renews automatically unless auto-renewal is turned off 24 hours before the end of the current period. Manage your subscription or turn off auto-renewal in your iTunes account settings. Any unused portion of a free trial period is forfeited upon purchasing a subscription. Support: support@ulilab.com Site: https://ulilab.com Privacy policy: https://ulilab.com/privacy Terms of use: https://ulilab.com/terms
mpolyco
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mpolyco is a complete, offline engineering toolkit for polymers, composites and mechanical engineering — materials data, calculators, simulations and a full reference library, all running on your device. No account. No internet. Nothing collected. Built for students learning the field and engineers who need a trustworthy answer fast: every model is validated against textbook and literature reference values, and every material property ships with its provenance. WHAT'S INSIDE • Calculators — classical laminate theory (ABD stiffness, engineering constants, per-ply stresses, first-ply failure), micromechanics (rule of mixtures, Halpin–Tsai), beams & pressure vessels, Mohr's circle, and a unit converter. • Simulations — viscoelastic creep & relaxation (Maxwell, Kelvin–Voigt, SLS), failure envelopes, cure kinetics, stress–strain, fatigue, DMA, WLF shift, step-growth polymerisation, Fickian diffusion, and pipe flow & drag. Analytic curves, computed live as you type. • Materials database — polymers, fibres and composite systems, each property sourced and citable. • Periodic table — every element's electron shells and the part it plays in polymers and composites. • Engineer's Handbook — the formulas that run mechanical engineering: beams, vessels, gears, springs, heat transfer, vibrations, torsion, columns, tolerances, fasteners and constants. • Basics & glossary — physics, chemistry and maths explained in plain language, with every symbol defined. New to the field? Start here. PRIVATE BY DESIGN mpolyco has no server and collects nothing — no tracking, no analytics, no account. An optional profile stays only on your device and is never uploaded. Everything works with Airplane Mode on. WORKS EVERYWHERE Native on iPhone, iPad and Mac, with a home-screen widget, Spotlight and Siri search, and an on-device "Explain simply" helper on the latest devices. Export any calculation as a report and email it to yourself or a colleague. Free — no ads, no in-app purchases. Privacy Policy: https://mpolyco.com/privacy Support & questions: hello@mpolyco.com
Screenshots
Verdict
The clearest difference is in-app purchases: mpolyco at none against Words's 14. On price, update cadence, ads 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. Words sells 12 in-app purchases, starting at $5.99 per 7 days. mpolyco asks for nothing beyond the download.
Words ships an update every 2 months, mpolyco monthly. The most recent releases landed on September 28, 2026 and September 15, 2026 respectively.
| Parameter | Words | mpolyco |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (1.1K ratings) — better | — |
| Positive reviews | 49.8% of reviews | — |
| Number of ratings | 1.1K — better | — |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 103 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrey Lebedev | Mustafa Mohammad |
Bugs and requests
Words
Reported bugs
2 issues- Premium features disappear during offline use
- Inability to restore purchases after updates
Requested features
4 requests- Add image generation for all words
- Improve offline mode functionality
- Expand dictionary with more modern vocabulary
- Enhance customization and personalization options
mpolyco
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Words
- Premium Plus3 Days trial$5.997 Days
- Premium (English)$13.991 Month
- Premium (English)$19.991 Year
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- Premium Plus2 variants$24.991 Year
- Premium (German)$39.991 Year
- Premium (English)2 variants$39.993 Months
- Premium Plus$47.991 Year
- Premium (German)7 Days trial$79.991 Year
- Premium (English)$79.991 Year
- Premium (English)7 Days trial$79.991 Year
- Premium Plus7 Days trial$95.991 Year
- Premium Plus$129.99
mpolyco
No in-app purchases









