KotoBird vs Okiru
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KotoBird
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Listen and answer! Kotoba Bird is a fun quiz app to learn Japanese words through listening. Hear a word and choose the correct answer from 3 options! [This version categories] ・Hiragana (A to N) ・Greetings [Full version "ことバード" includes all categories!] ・Hiragana・Greetings・Numbers・Food・Transport・Places・Katakana・Anime [Features] ・Learn words by ear ・No internet needed, fully offline ・Simple enough for anyone ・Perfect for learners of Japanese
Okiru
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Okiru is an alarm clock flashcard app built to make studying automatic. Set it for any moment, waking up, a study break, a reminder mid-afternoon, and the instant it rings, a flashcard session is one tap away. AN ALARM THAT ACTUALLY HOLDS YOU TO IT No digging through menus, no excuses. Whatever time you set, Okiru turns that moment into guaranteed practice, building the kind of consistency that's nearly impossible to fake your way through. PRACTICE ANYTIME, ALARM OR NOT Don't want to wait for an alarm? Jump into a practice session whenever you feel like it. The alarm is there for accountability, not a requirement. SMART REVIEW Spaced repetition shows the words you're about to forget, right before you forget them, so every session actually moves the needle. EVERY JLPT LEVEL, ORGANIZED N5 through N1 vocabulary, sorted by level, so you're always studying at the right difficulty for where you actually are. TRACK REAL PROGRESS See your streak build day by day, watch which words you've actually mastered, and spot the ones still giving you trouble before they slow you down. MAKE IT YOURS Add your own words and categories alongside the built-in vocabulary. STUDY ANYWHERE Your vocabulary and progress live on your device. There is no connection required to study. Set as many alarms as you want, whenever you want them. Okiru makes sure each one actually gets you studying, not just awake. Subscription Details: Okiru Pro is available as a monthly or yearly auto-renewing subscription. • Okiru Pro Monthly – $4.99/month (USD; price varies by region) • Okiru Pro Yearly – $39.99/year (USD; price varies by region) Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.playfuljapanese.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: KotoBird at none against Okiru's 2. On price, ads, device support and iOS requirement 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
Both are free to download. Okiru sells 2 in-app purchases, starting at $4.99 per month. KotoBird asks for nothing beyond the download.
| Parameter | KotoBird | Okiru |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 3 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 15 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Yoichiro Mitsui | Langston Culpepper Hill |
In-app purchases
KotoBird
No in-app purchases
Okiru
- Okiru Pro Monthly7 Days trial$4.991 Month
- Okiru Pro Yearly7 Days trial$39.991 Year









