Comparison

Learn Words Lite vs Sonic

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

Head to head
About

Learn Words Lite

Features
Read full description

LearnWords is a small app designed to improve your vocabulary. You get to decide which words to learn. Along with animated word cards LearnWords offers dictation and speech recognition exercises to help memorizing the words. Each word has its progress indicator. Study your way: you may manually mark the word as known or unknown, skip words. Whenever you might want to look up the word in an extended dictionary you can. Just download it beforehand — for free. You can make your own word sets for lessons, books and more. There is export/import capability which lets you share and exchange word sets. You can add words one by one or import them from text files or as text from any other app via share action. This will add several words at once to the current word set. The text for the import should consist of rows of type "foreign word : native word, native synonym". If you stumble upon an interesting word you can share this single word to LearnWords — it will offer to add it to the current set. Speech recognition requires internet connection. Other features work offline. The app itself gathers no data, contains no advertisement.

About

Sonic

Features
Read full description

Sonic turns the words you want to learn into flashcards and helps you remember them for good. MAKE A SET IN SECONDS • Import by link: paste a link to a public card set and Sonic brings in every term and definition. • Paste text: a list of words with their translations becomes cards, one pair per line, split by a dash, colon, comma or tab. • Check everything in the preview, fix or remove cards, then save. • Or type words yourself, one card at a time. FIVE WAYS TO STUDY • Flashcards: flip each card and mark it Know or Still learning. The next round brings back only the cards you are still learning. • Practice: short rounds that start with multiple choice or true or false and move on to written answers as you improve. • Test: choose how many questions and which kinds, and check yourself before an exam. • Match: pair each term with its definition to clear the board, and race your best time. • Review: spaced repetition brings each card back just before you would forget it. LEARN EVERY DAY The Learn tab gathers the cards due today from all your sets, plus the number of new cards per day you choose. Answer them, and Sonic schedules the next review for you. HEAR EVERY WORD Tap a word to hear it spoken. Sonic recognizes the language of each side and reads it aloud with the voices on your iPhone, in many languages. YOUR DATA STAYS YOURS • No account and no sign-up. • No ads, no tracking, no analytics. • Your sets, progress and settings sync through your own iCloud to your other devices. • Share any set as plain text.

Screenshots

Learn Words Lite4 screens
Sonic4 screens

Verdict

The call

The clearest difference is update cadence: Sonic at daily against Learn Words Lite's every 2 months. Learn Words Lite's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Learn Words Lite ships an update every 2 months, Sonic daily. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Learn Words Lite versus Sonic: the parameters behind the verdict, then further details
ParameterLearn Words LiteSonic
PriceFreeFree
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size6 MB12 MB
Age rating4+4+
DeveloperPaul BuktabNikita Kasatkin

In-app purchases

None

Learn Words Lite

No in-app purchases

None

Sonic

No in-app purchases

Questions

Is Learn Words Lite free?
Learn Words Lite is free to download, with no in-app purchases.
Is Sonic free?
Sonic is free to download, with no in-app purchases.
Do Learn Words Lite or Sonic have ads?
Neither Learn Words Lite nor Sonic shows ads.
Which is updated more often, Learn Words Lite or Sonic?
Learn Words Lite ships an update every 2 months, and Sonic daily. Most recently, Learn Words Lite was updated on November 7, 2026 and Sonic on October 31, 2026.

Other comparisons