Comparison

Wocably vs StoichioAI

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

Head to head
About

Wocably

Features
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Most vocabulary apps show you a word, you nod, and it's gone by dinner. Wocably is built on the opposite idea: you know a word when you can produce it from memory, in a real sentence, days later. 41,065 English words. 90,026 definitions. 180,054 example sentences. Every entry is graded A1 to C2, so you always study just past the edge of what you already know. Definitions and examples are all in English: you learn English through English. FIVE WAYS TO MEET A WORD Seeing a word is not learning it. Wocably rotates how it asks, and the format gets harder as the word settles in: • Flashcard: reveal, flip, listen • Definition to word: pick the word that fits • Word to definition: find the right meaning • Fill in the blank: choose the missing word in a real sentence • Type it: the sentence appears without the word, and you spell it from memory That last one is the heart of Wocably. No options to guess from, no hints. Just context and your memory. REVIEWS THAT ADAPT TO YOU Every word moves at its own pace: New, Learning, Reviewing, Mastered. Pick the simple, steady Leitner system, or turn on Smart Reviews: intervals stretch for words you know and shrink for the ones you miss. A forgotten word comes back sooner. That's spaced repetition, and it works. A REAL DICTIONARY, NOT A WORD LIST Every word has a full entry: meanings, part of speech, synonyms and antonyms (91,259 in total), phonetic transcription, syllables, audio pronunciation, CEFR level, difficulty, and frequency. Look up a word, read the entry, and add it to a deck with one tap. DECKS THAT ARE ACTUALLY YOURS Start with ready-made decks from A1 to C2. Build your own from the words you look up. In Discover, copy decks other learners have shared. Import a whole list from CSV, Excel, ODS, or plain text, and Wocably matches every line to its dictionary. STORIES WRITTEN FROM YOUR WORDS Every day, Wocably can generate a short story from the words you're learning, with each one highlighted in the text. Recognizing a word on a card is one thing; understanding it in a paragraph is another. A REASON TO COME BACK TOMORROW Earn XP, level up, and keep your daily streak. Four quests a day, including No Hesitation: a run of correct answers without a single mistake. Each mistake costs a life, and lives refill over time. Nine achievements, an activity map, and an accuracy rate that doesn't flatter you. START AT YOUR REAL LEVEL Setup takes a minute: your native language, your level from A1 to C2, your interests from 29 topics, and a goal of 10, 20, 30, or 50 words a day. Wocably handles the rest. STUDYING FOR A TEST? SAT, GRE, TOEFL, or IELTS: vocabulary makes the difference. Wocably has 17,842 words at C1 and C2, each with definitions, example sentences, and audio. Already have a word list for your exam? Import it and review it with the same system. FREE, AND WHAT PRO ADDS The free version includes 200 active words, 10 new words and two review sessions a day, two decks, and five lives a day. A genuinely usable app, not a trial. Wocably Pro removes every limit: unlimited words, sessions, decks, and lives, plus Smart Reviews, stories from your words, all premium decks, unlimited bulk import, two streak freezes a month, and full review history. Wocably Pro is an auto-renewing subscription. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews unless canceled at least 24 hours before the end of the current period. Manage or cancel it anytime in your Apple Account settings. Terms of Use: https://wocably.com/terms Privacy Policy: https://wocably.com/privacy

About

StoichioAI

Features
Read full description

StoichioAI is for Hong Kong secondary chemistry. Students write calculation steps on a whiteboard. The AI reads the working and asks questions, instead of handing over the answer. It is for students preparing for HKDSE Chemistry and for teachers who need to see how their own groups are doing. The interface, topics and AI replies can be switched between Traditional Chinese and English. English uses Hong Kong DSE chemistry wording and British spelling. Students can: Read an interactive lesson, then try the follow-up calculations Write with Apple Pencil or a finger, or submit a photo from the camera or the photo library Ask for a Socratic hint after a wrong attempt. Spoken feedback is Cantonese in Chinese and English in English Review feedback, past attempts, points, and a learning suggestion based on their own weak spots Teachers can: Create a teaching group and invite students with a join code or a school email See weak topics, common mistakes, and each student’s progress Refresh an AI suggestion for the group or for one student Preview questions and reference answers Topics include reacting masses, concentration, pH, volumetric analysis, standard enthalpy changes, Hess's law, rate of reaction, molar volume of gases, equilibrium constant, shifts in equilibrium, organic synthesis calculations, rate equation, activation energy, atom economy, separation and purification, quantitative analysis, instrumental analysis, and analytical chemistry applications. Sign in with an authorised school email. Points are awarded only the first time an exercise is answered correctly.

Screenshots

Wocably4 screens
StoichioAI4 screens

Verdict

The call

The clearest difference is in-app purchases: StoichioAI at none against Wocably's 2. StoichioAI also leads on update cadence (weekly vs fortnightly). Wocably's advantage is iOS requirement (15.0 vs 17.1). On price, 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. Wocably sells 2 in-app purchases, starting at $4.99 per month. StoichioAI asks for nothing beyond the download.

UpkeepUpdate frequency

Wocably ships an update fortnightly, StoichioAI weekly. The most recent releases landed on November 12, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 3 level
Wocably versus StoichioAI: the parameters behind the verdict, then further details
ParameterWocablyStoichioAI
PriceFreeFree
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.1
Further details — not scored
Size56 MB27 MB
Age rating12+4+
DeveloperLimundPang Ka Wai

In-app purchases

2 purchases

Wocably

Subscriptions2
  • Wocably Pro$4.991 Month
  • Wocably Pro$34.991 Year
None

StoichioAI

No in-app purchases

Questions

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

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