Comparison

Ultralingua vs SkyDict

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

Head to head
About

Ultralingua

This app offers a comprehensive bilingual dictionary and verb conjugator with advanced search capabilities. Access a vast library of dictionaries from renowned publishers, with offline functionality and customizable display options. Perfect for language learners, travelers, and professionals needing quick and accurate translations.

Highlights
  • Advanced search with misspelling correction
  • Built-in verb conjugations for all tenses
  • Offline dictionary access
  • Favorites and history tracking
  • Customizable font and interface settings
  • Search across multiple dictionaries simultaneously
Features
Read full description

The best dictionary app on the App Store. 35+ titles to choose from in a dozen languages. Includes world-class titles from Collins, Le Robert, and Vox. English Dictionary and Thesaurus are now FREE with download. Advanced search: • Catches misspellings, irregular verb conjugations, entries in either language, related words, and more. • Example phrases, idioms, and other usage notes are suggested as well • Search in all your dictionaries at once • Type numbers into the search box to see them returned as text in your languages Verb conjugations built in: • All tenses and forms for every verb • Accessible right within the definition or translation - no navigating to a separate tool to conjugate verbs Favorites and history: • Star any entry or conjugation to add it to your favorites • All expanded entries added to your history list for quick reference • Share your favorite words on Twitter and Facebook Make it yours: • Control your font style and size. • Use it anywhere! No internet connection required. • Change your interface settings to view the display in English, Spanish, French, Italian, Portuguese, or German. Choose your dictionary: • Hundreds of thousands of entries: every word you could possibly need. • Noun genders and parts of speech. • Slang, technical language, and regional differences in spelling and usage. • Hundreds of usage notes about troublesome constructions. • Search-as-you-go displays words and narrows your selection as you type. • Unlock as many as you want from the in-app store. REVIEWS "Ultralingua has been an invaluable tool for me! I travel outside of the United States with some regularity. Ultralingua Spanish has helped me expand my vocabulary and help with conversations and written correspondence. It's also helped me understand a lot of the signs and informational placards that are posted. It has really boosted my confidence when traveling abroad!" "I have your Spanish/English and have been using it for many many years. I love this app so much that I tell everyone I possibly can about it. Every time one of my friends gets a new iPhone and asks me what apps they should get this is at the top of my list." "I'm an undergrad linguistics major, and you're apps have helped immensely so far with learning foreign languages!" "With an Italian father-in-law, a German mother-in-law, and Mexican parents, the languages fly fast and loose in my family! I am in need of help with my German, and your dictionary is a Great help!" "Ive been learning Italian with the Ultralingua App and my study group have been impressed with the ability of quick searching whereas the traditional dictionaries take ages. The Conjugation has been an excellent way for a very quick verification." "This app simply works. Its not filled with gimmicks, its intuitive, its the best!" "Working in translation, your apps offer me immediate access to a wealth of information whenever I am on the go. Keep up the good work!" "As a notary, I use languages each day and in all kinds of settings (legal, personal or commercial). I love your apps (I have French and Spanish) and think they are one of the most useful apps I actually use every day! Keep up the good work!"

About

SkyDict

This app allows users to simultaneously search for word definitions across numerous online English dictionaries. It offers a seamless browsing experience with swipe gestures and includes a dark theme. Users can also look up words directly from other applications.

Highlights
  • Simultaneous multi-dictionary lookups
  • Swipe to switch dictionaries
  • Dark theme support
  • In-app word lookup via share menu
  • No ads or account required
Features
Read full description

SkyDict is an english dictionary that lets you look up words in multiple online english dictionaries at a time. Swipe left or right to switch different dictionaries. These online free dictionaries are included: Dictionary.com, Longman, Webster's, Collins, Urban Dictionary, Vocabulary.com, Oxford Learner's Dictionaries, Bing Dictionary, etc. Designed exclusively for iOS, SkyDict takes full advantage of the latest iOS features and technologies, giving you innovative, fast, and powerful tools. Features: - Look up words in multiple sources at a time. - Swipe left or right to switch dictionaries. - Dark theme for any dictionary. - Look up words within any app (Select the text, choose Share from the context menu, then select SkyDict to get its definition). - No Ads. No account needed. No in-app tracking. Designed for iOS 26 SkyDict is meticulously thought through and created from the ground up for iOS 26. Designed to take full advantage of powerful iOS features and technologies. SkyDict requires Internet Connectivity to search for a word.

Screenshots

Ultralingua4 screens
SkyDict4 screens

Verdict

The call

Ultralingua and SkyDict both sit at 4.7 stars, but that hides the real split: 90% of SkyDict's written reviews are positive against 54% of Ultralingua's. SkyDict also leads on in-app purchases (none vs 10) and update cadence (weekly vs every 4 months). Ultralingua's advantage is ratings volume (393 vs 35). On price, rating, 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. Ultralingua sells 10 one-off in-app purchases. SkyDict asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Ultralingua against 4.7 for SkyDict. That said, the two scores are not equally well evidenced: Ultralingua has 393 ratings behind it against 35, so its average is the more settled of the two. Written reviews are what separate them: 54% of Ultralingua's written reviews are positive against 90% of SkyDict's.

UpkeepUpdate frequency

Ultralingua ships an update every 4 months, SkyDict weekly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Ultralingua versus SkyDict: the parameters behind the verdict, then further details
ParameterUltralinguaSkyDict
PriceFreeFree
Rating4.7 (393 ratings)4.7 (35 ratings) — better
Positive reviews54.1% of reviews90.2% of reviews — better
Number of ratings393 — better35
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.614.0 — better
Further details — not scored
Size27 MB4 MB
Age rating4+4+
DeveloperUltralingua, Inc.Chunxia Li

Customer experience

Ultralingua

All ratings392 ratings
Positive92.6%
Neutral3.3%
Negative4.1%
Written reviews259 reviews
Positive54.1%
Neutral8.9%
Negative37.1%

SkyDict

All ratings35 ratings
Positive94.3%
Neutral2.9%
Negative2.9%
Written reviews41 reviews
Positive90.2%
Neutral9.8%
Negative0.0%

Bugs and requests

Ultralingua

Reported bugs

4 issues
  • Crashes on launch for some users
  • Inability to restore previously purchased dictionaries
  • Slow performance and lagging issues
  • Incomplete or missing translations for some words

Requested features

5 requests
  • Add voice pronunciation for words
  • Improve search to handle partial word inputs
  • Integrate with language learning apps and services
  • Offer more languages and dictionary options
  • Provide better syncing between devices

SkyDict

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Ultralingua

One-time10
  • French Thesaurus$2.99
  • French Dictionary$4.99
  • Latin-English Dictionary$5.99
Show 7 more
  • French-English Dictionary$12.99
  • Spanish-English Dictionary$12.99
  • German-English Dictionary$12.99
  • Italian-English Dictionary$12.99
  • Portuguese-English Dictionary$12.99
  • Vox Comprehensive Spanish Dictionary$14.99
  • Collins Spanish-English Dictionary$17.99
None

SkyDict

No in-app purchases

Questions

Is Ultralingua free?
Ultralingua is free to download, with in-app purchases available.
Is SkyDict free?
SkyDict is free to download, with no in-app purchases.
Which has better reviews, Ultralingua or SkyDict?
SkyDict is rated higher. Ultralingua averages 4.7 out of 5 from 393 ratings, while SkyDict averages 4.7 from 35 ratings.
Do Ultralingua or SkyDict have ads?
Neither Ultralingua nor SkyDict shows ads.
Which is updated more often, Ultralingua or SkyDict?
Ultralingua ships an update every 4 months, and SkyDict weekly. Most recently, Ultralingua was updated on November 1, 2026 and SkyDict on November 3, 2026.

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