Comparison

Kiki vs Nerd Dojo

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

Head to head
About

Kiki

Features
Read full description

Save any word you meet β€” type it, scan it with your camera, or import a list you already have. Kiki keeps it and brings it back right before you forget. No account, no ads, no feed. ADD A WORD IN SECONDS, HOWEVER YOU MEET IT You meet a word once. If saving it takes more than a few seconds, it's gone. So Kiki gives you a way in from wherever you already are. Press and hold the Kiki icon on your Home Screen and land straight on a new word β€” no launch screen, no tapping through. Two fields and you're done. Or scan it with your camera instead. Or import a list you already keep somewhere else. On Mac, a keyboard shortcut. However you catch the word, it lands in the same place. You can also share selected text from another app to Kiki and open it in Translate, ready to save. TRANSLATE WITH YOUR CAMERA Point at any text: a book, a menu, a street sign. Kiki recognizes the words and gives you the translation, the transcription and four real usage examples. One tap adds it to your dictionary. Select a whole block, a single sentence or one word β€” and fix the recognized text before translating if the light was bad. Already have a photo or screenshot? Choose it from your library and translate the text inside. KEEP WORDS IN FRONT OF YOU A Home Screen widget shows a word from your own dictionary and quietly changes through the day β€” small, medium or large. Tap it to open the word. Nothing to check, nothing to dismiss. A new Lock Screen widget keeps words from your dictionary in view and changes them through the day. Tap a word to open it. BUILD A DICTIONARY THAT STAYS YOURS Add words with translations, transcriptions, notes and tags. Search across everything instantly. Organize by language, project, or however you learn. Bring in lists you already have from CSV or TXT, and export to PDF, CSV, JSON or Markdown any time. Your vocabulary is yours to take with you. LEARN WITH SPACED REPETITION Kiki uses the SM-2 algorithm to bring each word back right before you forget it. Five review modes that change as you improve: flashcards, multiple choice, typing, listening and matching. Streaks, XP and a learning calendar if you like watching the numbers move. HEAR EVERY WORD Download a natural voice once and it works offline, forever. Speech is generated on your device β€” no streaming, no account. Once you have downloaded a voice, tap the speaker on a flashcard or study question to hear its pronunciation. SYNC EVERYWHERE iCloud sync across iPhone, iPad and Mac. Works offline. No sign-up, no tracking, no ads. WHY KIKI Powerful flashcard apps make you configure them for an evening before you learn a single word. Study apps want an account and a feed. Camera translators forget the word the second you close them. Kiki is one quiet place where every word you meet lands, stays, and comes back. PERFECT FOR - English, Spanish, French, German, Japanese, Korean learners β€” any language - Students preparing for SAT, GRE, TOEFL, IELTS, JLPT, HSK - Polyglots maintaining several word lists at once - Travelers building a personal phrasebook - Anyone collecting words they meet while reading or living abroad Terms of Use (EULA): https://kiki-voc.web.app/pages/terms.html

About

Nerd Dojo

Features
Read full description

Make your own practice paper: choice and fill-in questions are graded right on this device, and calculations and proofs can be written out in full with Apple Pencil. Questions you miss go to your mistake book, and a correction counts only once you pass it. Built-in practice for calculus, business calculus and linear algebra. Nerd Dojo is an iPad-first universal iPhone/iPad practice app for individual learners. It brings learning modules, generated practice papers, answers, grading, correction, mistake review, and progress tracking into one clear learning loop. Start from learning modules, then generate practice papers by subject, unit, question type, difficulty, and points. Choice and fill-in questions can be answered and checked locally. Calculation, proof, and written questions can capture the full solution process, not just the final answer. Each question can include scratch paper. Use Apple Pencil or your finger to write derivations, calculations, and ideas before returning to the answer flow. For math and STEM practice, this keeps the workflow closer to real problem solving. After practice, Nerd Dojo helps organize correction tasks, mistake-book entries, learning history, and local progress signals from recent checked attempts so you can choose what to correct, review, or practice next. AI-assisted grading is optional. If you configure your own AI model or service, the app may send submitted questions, answers, grading criteria, handwriting, or image content to the service you select for grading or feedback. Without an AI service, practice, mistake review, progress, local data, and export tools remain available. Nerd Dojo is designed for individual learning. Learning data is local-first, API keys are stored using iOS secure storage, and API keys are not included in local backup exports. iPhone can be used for lighter review, settings, progress, and practice flows. For the best writing and full-page practice experience, iPad with Apple Pencil is recommended. Subscription details Nerd Dojo Pro is an auto-renewable subscription, offered monthly and yearly. It removes Nerd Dojo's daily limit of 10 graded submissions; generating papers, the mistake book, learning history and local data stay available on the free plan. The App Store shows the price for your region. Third-party AI usage is paid by you directly to the provider you choose, and is not included in a Nerd Dojo subscription. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period; the account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel subscriptions in your App Store account settings after purchase. Privacy Policy: https://bridgeaiworks.com/privacy/#nerd-dojo Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Kiki4 screens
Nerd Dojo4 screens

Verdict

The call

Kiki and Nerd Dojo are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

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

Both are free to download. Kiki sells 4 in-app purchases, starting at $0.99 per month and Nerd Dojo sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Kiki ships an update every 3 weeks, Nerd Dojo every 2 weeks. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

ScorecardNo meaningful differences
Kiki versus Nerd Dojo: the parameters behind the verdict, then further details
ParameterKikiNerd Dojo
PriceFreeFree
Update frequencyEvery 3 weeksEvery 2 weeks β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.018.0
Further details β€” not scored
Size54 MB83 MB
Age rating9+4+
DeveloperVadym MarchenkoYung-Hsin Shieh

In-app purchases

4 purchases

Kiki

Subscriptions3
  • Kiki Premium$0.991 Month
  • Kiki Premium3 Days trial$2.991 Month
  • Kiki Premium3 Days trial$24.991 Year
One-time1
  • Lifetime Access$39.99
2 purchases

Nerd Dojo

Subscriptions2
  • Nerd Dojo Pro Monthly1 Month trial$4.991 Month
  • Nerd Dojo Pro Yearly1 Year trial$49.991 Year

Questions

Is Kiki free?
Kiki is free to download, with in-app purchases available.
Is Nerd Dojo free?
Nerd Dojo is free to download, with in-app purchases available.
Do Kiki or Nerd Dojo have ads?
Neither Kiki nor Nerd Dojo shows ads.
Which is updated more often, Kiki or Nerd Dojo?
Kiki ships an update every 3 weeks, and Nerd Dojo every 2 weeks. Most recently, Kiki was updated on November 8, 2026 and Nerd Dojo on November 10, 2026.

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