Sottaku 5.5.1 improves offline flashcards: more reliable downloads, review progress that stays in sync after reconnecting, and fixes for missing cards and undo. On Android, the bug report form now stays accessible while the keyboard is open.

Sottaku 5.5.0 adds voice and video calls to direct messages, including lock-screen incoming-call controls and smoother calling in the background or a floating window. Social images now support zoom, swipe navigation, and quick actions, while uploaded GIFs stay animated. We also improved notification links, timeline replies, language switching, furigana and Korean pronunciation display, and MindGoblin controls.

Sottaku 5.4.9 improves reading with more accurate word segmentation and grammar support across study languages, plus dictionary popups in side-by-side views. MindGoblin adds a thumb joystick and better reading choices. You can now share celebration images to X. Media autoplay, Chinese language selection, profile city names, dictionary search, and interrupted challenge payments are more reliable.

Sottaku now includes Sottaku-Yomitan, a Safari extension for iPhone with iOS 16.4 or later and iPad with iPadOS 16.4 or later. With Sottaku Pro, look up words on webpages and save them to your Sottaku flashcards for review. To get started, enable Sottaku-Yomitan in Safari Extensions, allow access to sites you want to read, and link your Sottaku account in the extension settings. The reader now follows your selected study language. Reading tips respect your progress and dismissals.

Learn words from a free song with guided steps to save words and open review. Paste your own short passages into the new reader. New shortcuts make reading tools and browser extension setup easier to find.

Sottaku 5.4.5 fixes photos not loading in private messages and lets you tap to retry failed images. Challenge entry payments are more reliable, helping prevent in-app currency from being deducted twice when a connection is interrupted.

Sottaku 5.4.4 helps you stay signed in offline, adds @mention suggestions in posts and replies, and lets you manage blocked users. Dictionary previews now show noun gender and declension. Notifications, multiplayer reconnection, quiz navigation, and gift purchases are more reliable, with clearer pricing and improved translations.

Sottaku 5.4.3 adds localized grammar details to flashcards. Chinese Pinyin now keeps clearer syllable boundaries, and media lyrics display mixed left-to-right and right-to-left lines more naturally. This update also improves lyric word selection and underlines, flashcard and challenge recovery, and celebration readability.

Sottaku 5.4.2 adds guided practice shortcuts to the Chinese beginner and pronunciation guides, searches your entire flashcard collection, and adds manual Restore Purchases. Chats now deliver more reliably and support pull-to-refresh. This update also improves onboarding, home-screen loading, challenge and multiplayer safeguards, notifications, accessibility, dark-mode contrast, and error recovery.

Sottaku 5.4.1 fixes an issue that could show “Payment Failed” after a successful iOS Pro purchase. Sottak-onnect now reveals answers and handles press-and-hold reading hints more reliably. Dictionary search is more dependable, and quiz text remains readable with larger accessibility text sizes.

Sottaku 5.4.0 introduces annual Sottaku Pro plans, offering savings compared with monthly billing. The upgrade and subscription screens now make it easier to compare plans, choose annual billing, and manage your current plan. This update also improves subscription purchases and restores, iOS audio playback, and quiz display.

Sottaku 5.3.2 makes account recovery, registration, and sign-in more reliable. When extra verification is needed, the app now guides you through an email code or security check. Email verification and Google and Apple account linking are smoother, and signing out or deleting an account now clears downloaded and cached account data more thoroughly.

Sottaku 5.3.1 improves account security and sign-in reliability. Sign-in credentials are now protected by your device’s secure storage, and sessions refresh more safely. Google and Apple sign-in now guides you through linking an existing Sottaku account when needed, and account deletion details are clearer.

Sottaku 5.3.0 strengthens account protection across email, Google, and Apple sign-in. Email verification links now return you to registration more reliably, and subscription and gift purchases are matched more securely to the correct account.

Sottaku 5.2.3 makes the quiz tour fit cleanly on smaller screens and keeps New badges visible while browsing media. Vietnamese labels and Hán-Nôm character coverage have also been improved. The August challenge season introduces the Sottakushka reward emoji.

Sottaku 5.2.2 improves rank challenges for languages that practice noun forms or morphology, including typed-answer questions and the right keyboard for each language. Recent activity now shows clearer morphology prompts and the exact selected and correct answers for noun-form quizzes. This update also expands Vietnamese Hán-Nôm character coverage.

Sottaku 5.2.1 fixes navigation for morphology, noun-form, and Cyrillic practice quizzes; improves Arabic and Hebrew reading marks in media, including inflected words; and expands Vietnamese Hán-Nôm character coverage. It also prevents blank Android notification summaries and improves completed rank challenge handling.

Sottaku 5.2.0 makes all 15 study languages available to everyone, adding Russian, Latin, Vietnamese, Portuguese, Arabic, Hebrew, and Hindi. Explore new Quran and Tanakh readers, Quran flashcard packs, dictionary-linked Tanakh text, and expanded alphabet practice. This update also improves quizzes, Vietnamese tone input, Hebrew audio, handwriting, right-to-left interactions, and offline flashcard review.

Sottaku 5.1.0 brings a major mobile experience upgrade with easier access to flashcards and beginner guide practice, smoother quizzes, media, social, and messaging, plus better support for larger text, right-to-left languages, and every interface locale.

Sottaku 5.0.5 improves social replies and timeline image actions, fixes DM attachment images and photo saving, adds mobile keyboard key previews, and polishes kana, Bopomofo, pinyin, stroke order, layouts, and pagination.

Sottaku 5.0.4 adds the mobile law reader, improves profile activity and study stats, and smooths long-law loading, word peek layout, and Japanese pitch accent display.

Sottaku 5.0.3 improves reliability for study sessions, navigation, and account access.

Sottaku 5.0.2 fixes a sign-in issue and makes account access more reliable.

Sottaku 4.0.2 adds custom Pro color themes and smoother default/night palettes, resumes onboarding more reliably, makes placement quizzes and word peeks smoother, improves beginner grammar guide placement, and starts more reliably on more Android devices.

Sottaku 4.0.1 makes the 4.0.0 language expansion smoother: clearer language names and flags, richer beginner grammar guides, cleaner flashcard controls, a slimmer answer keyboard, better Latin-script reading cards, more reliable media screens, and steadier sign-in.