calcMod vs Essential Words
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
calcMod
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What are all the digits of the factorial of 69 and how many digits ? What is the gogol number ? How many integers of the form 10^n+1 are prime ? (like 101) Want to know if a big integer is prime ? The change mod function indicates when the number is prime. Want to know the divisors of an integer ? A prime divisor has no inverse modulo this integer. This is a modulo calculator overpowering almost limitless! (only display is limited !) With modulo gogol, calculus are exact until 100 digits ! The "n!" button calculates the factorial of an integer from 0 to 2000 (v2.0). Factorial are limited to factorial of 2000! The "change mod" (change modulo) function indicates when the modulo is prime. There are no limit to the modulo except the display. The "mod gogol" button set a modulo to 10^100 (gogol number). You can stoke one number and recall it when you want. The "Mod" operation indicates the residue modulo N. The exp function allow modular exponentiation (as + - *) The "INV" function calculates the inverse of an integer modulo N. This app is intended for both mathematics teachers and/or their students, or if you are interested in the beauty of numbers. Enjoy calcMod-ProX ! Les commentaires sont disponibles en français (réglages).
Essential Words
Master 4000 essential English words through definitions, examples, and audio pronunciations. Learn vocabulary in context with engaging stories and bookmark words for review. Ideal for all English learners.
- 4000 essential English words
- Detailed definitions and examples
- Audio pronunciation
- Engaging stories for context
- Bookmark words for review
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Expand your vocabulary and improve your English language skills with 'Essential Words - 4000' - a comprehensive language learning app designed to help you master the essential words of the English language while enjoying captivating stories. Key Features: Access a comprehensive list of 4000 essential English words to expand your vocabulary. Detailed definitions, example sentences, and audio pronunciation for each word. Engaging stories incorporating the essential words, making learning more enjoyable and contextual. Bookmark and revisit words for reinforcement. Whether you're a beginner looking to build a solid English foundation or an advanced learner seeking to enhance your language skills, 'Essential Words - 4000' is the perfect companion for your language learning endeavors. Dive into our app and unlock a world of knowledge, communication, and endless possibilities. Start your language learning journey today! Download 'Essential Words - 4000' now! Keep in touch with us via: - Email: insbox.helps@gmail.com
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Verdict
The clearest difference is price: Essential Words at Free against calcMod's $0.99. Essential Words also leads on update cadence (every 2 days vs every 6 days). calcMod's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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
Essential Words is free to download; calcMod costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
calcMod ships an update every 6 days, Essential Words every 2 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | calcMod | Essential Words |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.5 (76 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 76 — better |
| Update frequency | Every 6 days | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Alain Cardinaux | Son Le |
In-app purchases
calcMod
No in-app purchases
Essential Words
No in-app purchases
Questions
Is calcMod free?
Is Essential Words free?
Do calcMod or Essential Words have ads?
Which is updated more often, calcMod or Essential Words?
Other comparisons
