Companion Synonyms vs E.J.C Science&Tech Dictionary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Companion Synonyms
Access a vast thesaurus with over 2.5 million synonyms and related terms. Enjoy advanced search features, offline functionality, and seamless integration with other compatible dictionaries.
- 2.5 million synonyms and related terms
- Real-time progressive look-up
- Wildcard and partial searches
- Inter-application linking with other UniDict dictionaries
- Complete offline use
- AI boosted anagram generator
- Bookmarks with notations
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"Moby Thesaurus II" by Grady Ward 30,260 root words, with 2,520,264 synonyms and related terms. The largest synonym resource around... Powered by Enfour's acclaimed "UniDict® Engine", this is the only iOS/macOS dictionary platform with inter-application linking. Meaning "Companion Synonyms" works directly with all other UniDict dictionaries like "American Heritage®", "LDOCE" and "Oxford Dictionaries". Main features: ● real-time progressive look-up ● wildcard searches for unknown spellings and quizzes ● Scrolling index overview ● partial and wildcard searches ● Hyperlinks from all entries ● Round-trip links out to supported dictionaries * ● bookmarks with notations ● automatic history ● AI boosted anagram generator ● 3D Touch support ● DarkMode support ● iPhone 18 & iOS27 support ● iPad "Fast App Switching" (Multitasking) ● iPad Pro multi-screen and Drag & Drop ● Support for iPhones, iPads, iPods and macOS ● complete offline use - no internet connection is required ________________________________________ * Tapping on the headwords will start a search in any "Unidict® Engine" dictionary title you have installed. These searches are 'round-trip', allowing you to return to "Companion Synonyms" through the "Back" button. If you have just a dictionary and don't have a thesaurus installed, "Companion Synonyms" will act as a replacement for searching out from dictionaries. This works with: American Heritage® Dictionary Australian Oxford Dictionary Longman Dictionary of Contemporary English Longman English-Japanese Dictionary and many more...
E.J.C Science&Tech Dictionary
This application provides a quick reference for scientific and technical terms in English, Japanese, and Chinese. It offers offline access to a large database of words, allowing for fast lookups and easy navigation through search history and bookmarks.
- Offline dictionary access
- English, Japanese, Chinese terms
- Search by prefix or partial match
- Bookmark and history functions
- Quick word lookups
- Large word database
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If your job involves Japanese/Chinese words in the field of Science & Technology, maybe this application can help you to finish your work quickly and correctly, because it is an application running on iPhone/iPod Touch, not a heavy book, you can take it out, and look up your words quickly as long as you want to do. This application collected 552,707 well-used words (English/Japanese/Chinese(s)) in the field of Science & Technology from various aspects, such as Machinery, Computer, Electronics, Engineering, Telecommunication, Chemistry, Energy, Biology and so on. we hope this application can give you a big help. Features: 1, Easy to use and offline. Just input the word(English/Japanese/Chinese) in the searching field and the searching result will be displayed. User can set searching mode to prefix or partial. Drag the screen up and new words in the searching result will be showed automatically. 2, Bookmark & history function. You can put the important word to bookmark by touching the '+' button on detail screen. Every word you referenced will be add to history automatically. 3, English, Japanese, Chinese are supported on the detail screen. If a word has meaning in English, Japanese, Chinese at the same time, all the word will be showed on the detail screen. Tapping the word on detail screen, it will be inputed into searching field, so you can perform a new searching. 4, Large volume. There are 552,722 well-used words(English/Japanese/Chinese(s)) in this application, it can fulfill your needs in most case. Supported language: English, Japanese, Chinese Notice: 1, Partial searching mode is faster than prefix mode in searching word of Chinese/Japanese. 2, This application only give a quick reference for a word in English and corresponding Japanese and Chinese, NOT the explanation of the word. 3, It is NOT TRUE that a word in English is always followed by the corresponding Japanese and Chinese. 4, It takes more time in searching word of Japanese/Chinese than in English, and the latest device(3GS) always has a very faster response than the old one in searching operation.
Screenshots
Verdict
The clearest difference is review sentiment: Companion Synonyms at 64% against E.J.C Science&Tech Dictionary's 0%. Companion Synonyms also leads on update cadence (every 3 months vs every 13 months) and price ($1.99 vs $3.99). On ads, in-app purchases, monetization model 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
Companion Synonyms costs $1.99 and E.J.C Science&Tech Dictionary $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Companion Synonyms ships an update every 3 months, E.J.C Science&Tech Dictionary every 13 months. The most recent releases landed on October 23, 2026 and October 12, 2026 respectively.
| Parameter | Companion Synonyms | E.J.C Science&Tech Dictionary |
|---|---|---|
| Price | $1.99 — better | $3.99 |
| Rating | 5.0 (10 ratings) — better | — |
| Positive reviews | 63.6% of reviews — better | 0.0% of reviews |
| Number of ratings | 10 — better | — |
| Update frequency | Every 3 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 62 MB | 67 MB |
| Age rating | 9+ | 4+ |
| Developer | Enfour, Inc. | AOBO Co.,Ltd |
Customer experience
Companion Synonyms
E.J.C Science&Tech Dictionary
In-app purchases
Companion Synonyms
No in-app purchases
E.J.C Science&Tech Dictionary
No in-app purchases
Questions
Is Companion Synonyms free?
Is E.J.C Science&Tech Dictionary free?
Do Companion Synonyms or E.J.C Science&Tech Dictionary have ads?
Which is updated more often, Companion Synonyms or E.J.C Science&Tech Dictionary?
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