Comparison

Kujun vs Shut Up?!

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

Head to head
About

Kujun

Features
Read full description

See your consistency at a glance — and keep it completely to yourself. Kujun is a private, fully native habit tracker. No account. No subscription. No cloud. Everything lives on your device, and the app collects zero data. Named after the Korean word 꾸준 (kkujun) — "steady, consistent" — Kujun is built around one idea: show up daily, and watch that consistency build. PRIVATE BY DESIGN • No account or sign-up — open the app and start • No subscription required • All your data stays in a local database on your device • No analytics, no tracking, no third-party SDKs YOUR CONSISTENCY AT A GLANCE • A GitHub-style heat map for every habit • Current streak, best streak, and completion rate • The longer you show up, the better it looks CHECK OFF WITHOUT OPENING THE APP • Home Screen widgets (small and medium) show your last 7–14 days and streaks • Complete habits straight from reminder notifications • Tap the widget to jump right into the app MADE FOR DAILY USE • Create habits with a name, icon, color, and weekly schedule — daily or any set of weekdays • Sort, reorder, and edit habits any time • Gentle reminders at the time you choose • Haptics and a small celebration when your day is complete FAST AND NATIVE • Built with native iOS components, SF Symbols, and modern iOS design • Light and dark mode, at home on your iPhone YOUR DATA IS YOURS • Export a backup file any time and restore it on any device • Delete the app and nothing lingers on a server — because there is no server Start small. Stay steady. Watch the heat build.

About

Shut Up?!

This app helps you monitor and balance speaking time in conversations. It provides real-time feedback on your talk time, interruptions, and word count, with discreet alerts to encourage more balanced dialogue. It also offers readability scores for your own speech.

Highlights
  • Real-time talk-balance monitoring
  • Timed word count analysis (1, 5, 30 min)
  • Longest monologue and interruption tracking
  • Readability scores for your speech
  • Discreet Apple Watch haptics
  • Shareable session summaries
  • Privacy-focused local processing
Features
Read full description

Shut Up?! counts your share of a conversation while it happens. Your iPhone tells your voice from everyone else's and shows how the talking is split over the last minute, the last five, the last thirty, and the whole session. When your share drifts too far, your Apple Watch taps you. Nobody else at the table notices. It works for meetings, sales calls, interviews, dinners, dates, family debates, and every story that somehow became a keynote. Solo mode measures a practice talk with nobody else in the room. WHAT IT COUNTS Talk time, yours against everyone else's, as a live tug of war Turns taken, interruptions, and your longest monologue Speaking pace, pauses, and filler words Reading scores on your own words (Gunning Fog, Flesch-Kincaid, LIX), so you know when you have drifted into jargon Tonight against your own past sessions, learned on the phone, so a loud room where everyone talked reads differently from a room with a lot of you in it A reading for every number: which way is high, where the line worth acting on sits, and one worked example WHEN YOU RUN ON A tap on the wrist first. If the streak continues, a Live Activity, then a notification, then one of six dryly funny alarm voices, from The Butler to The Terminal. Snooze, mute, pause, and one-tap stop are always there. When the session ends you get a receipt. Share it as an image, or print it on a receipt printer. PRIVACY IS THE PRODUCT No audio file is ever created. None. No transcript is ever saved. A word turns into a few numbers inside the speech callback and is gone in the same line of code. Speech recognition and voice matching run on your iPhone. If the on-device model is missing, the session refuses to start rather than send anything out. Other people are one anonymous group. Never named, never read, never profiled. Sync is off by default. Turn it on and it carries numeric totals and dates. Nothing else. Your words stay in the room. Only the numbers survive. WHERE THE MATH COMES FROM I built Shut Up?! as a Wharton MBA student, mostly because I kept hearing myself talk. The personal baseline comes from a marketing course, and uses the model that learns how often one customer buys and flags the weeks that sit far from it. The reading scores follow the textual analysis material Professor Brian Bushee teaches in Financial Disclosure Analytics. Any mistakes in them are mine, and neither he nor Wharton had any hand in the app. THE FINE PRINT Shut Up?! jokes about your numbers, never your character. It is a mirror, not a recorder, not a surveillance tool, and not a substitute for professional advice. Everyone in the conversation should know a session is running. That is what opt-in means. COMMON QUESTIONS Does it record me? No. No audio file is ever created and no transcript is kept. Does it need the internet? Not to count. Speech recognition and voice matching run on your iPhone. The one download is Apple's speech model, offered before your first session. Does it work without an Apple Watch? Yes. The Watch adds the wrist tap. The iPhone shows everything else. Does it name the other people? No. Everyone who is not you is one anonymous group. Can I practise a speech alone? Yes. Solo mode measures pace, pauses, filler words and reading level with nobody else in the room. Does it work in other languages? Counting and timing do. The reading scores and some filler words are written for English and are held back in other languages. Does it start by itself? Never. You start every session by hand, and everyone at the table should know. Start a session tonight. Find out who the keynote speaker really was.

Screenshots

Kujun4 screens
Shut Up?!4 screens

Verdict

The call

The clearest difference is price: Kujun at Free against Shut Up?!'s $2.99. Kujun also leads on iOS requirement (16.4 vs 26.0). Shut Up?!'s advantage is update cadence (every 4 days vs every 3 months). On ads, in-app purchases 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

Kujun is free to download; Shut Up?! costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Kujun ships an update every 3 months, Shut Up?! every 4 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Kujun versus Shut Up?!: the parameters behind the verdict, then further details
ParameterKujunShut Up?!
PriceFree — better$2.99
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS16.4 — better26.0
Further details — not scored
Size49 MB18 MB
Age rating4+12+
DeveloperCode with BetoPraesto Logica LLC

In-app purchases

None

Kujun

No in-app purchases

None

Shut Up?!

No in-app purchases

Questions

Is Kujun free?
Kujun is free to download, with no in-app purchases.
Is Shut Up?! free?
Shut Up?! costs $2.99, with no in-app purchases.
Do Kujun or Shut Up?! have ads?
Neither Kujun nor Shut Up?! shows ads.
Which is updated more often, Kujun or Shut Up?!?
Kujun ships an update every 3 months, and Shut Up?! every 4 days. Most recently, Kujun was updated on October 28, 2026 and Shut Up?! on October 31, 2026.

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