Comparison

OpenMDict vs Clean Water Radar

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

Head to head
About

OpenMDict

This free, open-source dictionary reader allows you to view definitions from multiple dictionaries simultaneously. It offers pop-up lookup from any app and syncs your dictionaries, bookmarks, and history across devices via iCloud. Includes over 65 curated dictionaries to get you started.

Highlights
  • Multiple layout modes (Columns, Grid, List)
  • Pop-up lookup via Action Extension
  • Jump search within definitions
  • iCloud sync for dictionaries and history
  • Import unlimited dictionaries and create groups
  • Includes 65+ curated open-source dictionaries
  • Dark mode enhancements with adjustable brightness
Features
Read full description

OpenMDict is a free, open-source MDict (.mdx/.mdd) dictionary reader for iPhone and iPad. ► THREE LAYOUT MODES & MULTI-WINDOW ON iPadOS - View definitions from multiple dictionaries simultaneously in Columns, Grid, or List layout — compare and cross-reference at a glance. - Desktop-class productivity with multiple windows and 30+ keyboard shortcuts. ► POP-UP LOOKUP & JUMP SEARCH - Look up words from any app via the Action Extension pop-up. - Keep jump-searching unfamiliar terms within definitions until every word is clear. ► iCLOUD SYNC & UNLIMITED GROUPS - Dictionaries, bookmarks, history, and lookup counts sync across all your devices. - Import unlimited dictionaries and create unlimited groups — no subscriptions, no ads, no paid tiers. ► PRESET DICTIONARIES INCLUDED & DARK MODE ENHANCEMENTS - Choose from 64 curated open-source dictionaries (WordNet, JMdict, CC-CEDICT, and more) — download and start using them right away. - Enhance third-party dictionaries' readability in dark mode, with 7 levels of adjustable brightness per dictionary. ► AI COACH & VOCABULARY GAMES - Turn the English words you bookmark into four quick games, generated on your device by Apple Intelligence, with definitions from your own dictionaries. - Swipe to sort synonyms, antonyms, and look-alikes. - Spot the impostor words hiding among a word's true relatives. - Settle a daytime-TV-style paternity dispute: is this word really in the family? - Answer a game-show survey: name the words that share a category. - Requires iOS 26 or later and a supported device with Apple Intelligence turned on and set to a language it supports. ► MORE FEATURES • Full MDict format support: V1 (LZO), V2 (zlib), MDD resources, obfuscated dictionaries • Lemma-aware search — finds base forms and inflected variants automatically • Siri Shortcuts, Spotlight search, Quick Actions, Share Extension, Drag & Drop • Available in 13 languages: English, 简体中文, 繁體中文, 日本語, 한국어, Español, Deutsch, Français, Português (BR), Русский, Українська, العربية, हिन्दी

About

Clean Water Radar

Features
Read full description

Check beaches, rivers and bathing spots before you go. Clean Water Radar helps you understand the latest available official public water-quality information for places where people swim, paddle, surf, walk or spend time by the water. Use it to look up beaches, rivers and bathing waters, then read a plain-English place card with the public data currently available for that location. Where supported, Clean Water Radar combines bathing-water classifications, public warnings, rain or flood context, source freshness, confidence level and clear status wording. It is built for beach days, wild swimmers, families, surfers, paddlers, holiday planning and anyone who wants a calmer way to check public water-quality information before heading out. Clean Water Radar is expanding beyond the UK. The app now supports or is being prepared to support official public beach and bathing-water data for the USA, Taiwan, Mexico, France, Germany, Italy, Portugal, Spain, Sweden, Finland, Czech Republic and Türkiye. Key features: Search beaches, rivers and bathing spots View official public monitoring data where available See public warnings, advisories or closures where supported Understand source freshness and confidence level Read conservative, plain-English water-quality summaries Save favourite swim spots Use regional refresh and shared public cache behaviour designed to avoid exact-location tracking language Get clearer international coverage and search wording Clean Water Radar Plus, where offered, adds more convenient saved-place and alert features for people who regularly check the same locations. Important: Clean Water Radar does not guarantee that water is safe. Conditions can change quickly, and public source data may be delayed, incomplete, seasonal or based on annual classifications rather than current conditions. Always follow local signs, lifeguards, closures and official advice at the location. Clean Water Radar is not affiliated with, endorsed by or partnered with any public authority. It presents official public data as guidance only. Terms of Use (EULA): https://learn.lanchesterresearchanddesign.com/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

OpenMDict4 screens
Clean Water Radar4 screens

Verdict

The call

The clearest difference is in-app purchases: OpenMDict at none against Clean Water Radar's 10. OpenMDict also leads on iOS requirement (15.6 vs 18.6). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Clean Water Radar sells 10 one-off in-app purchases. OpenMDict asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 9, 2026 and November 12, 2026 respectively.

Scorecard2 real differences · 8 level
OpenMDict versus Clean Water Radar: the parameters behind the verdict, then further details
ParameterOpenMDictClean Water Radar
PriceFreeFree
Rating4.6 (5 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings5 — better—
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.6
Further details — not scored
Size78 MB4 MB
Age rating4+4+
DeveloperHan YinThomas Richardson

In-app purchases

None

OpenMDict

No in-app purchases

10 purchases

Clean Water Radar

One-time10
  • Türkiye Data$3.99
  • France Data$3.99
  • Germany Data$3.99
Show 7 more
  • Italy Data$3.99
  • Portugal Data$3.99
  • Spain Data$3.99
  • Czech Republic Data$3.99
  • Finland Data$3.99
  • Sweden Data$3.99
  • Lifetime$29.99

Questions

Is OpenMDict free?
OpenMDict is free to download, with no in-app purchases.
Is Clean Water Radar free?
Clean Water Radar is free to download, with in-app purchases available.
Do OpenMDict or Clean Water Radar have ads?
Neither OpenMDict nor Clean Water Radar shows ads.
Which is updated more often, OpenMDict or Clean Water Radar?
OpenMDict ships an update fortnightly, and Clean Water Radar fortnightly. Most recently, OpenMDict was updated on November 9, 2026 and Clean Water Radar on November 12, 2026.

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