Shush vs Calypso Ballistics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shush
This app uses precise haptic feedback on your wrist to track time silently. Customize vibration intervals to stay aware of time passing without audible alerts, perfect for presentations, focus sessions, or workouts.
- Silent haptic feedback
- Customizable vibration intervals
- Background timer execution
- Focus-friendly for various activities
- Optimized for battery life
- Native SwiftUI performance
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Let's face it: audible alarms are rude. They interrupt your flow, startle your cat, and ruin that dramatic pause in your speech. Enter Shush, the timer that keeps its mouth shut and does its job. Designed exclusively for Apple Watch, Shush uses precision haptic feedback to "tap" your wrist as time passes. It is the perfect companion for anyone who needs to keep time without alerting the entire room. WHY YOU WILL LOVE IT: Silent But Deadly Accurate: No beeps, no chimes, no awkward ringtones. Just a subtle, distinct vibration on your wrist. It is between you and your watch. Smart Intervals: Customize your feedback loop. Get nudged every second (for the metronome maniacs), or set milestones at 5, 10, or 60 seconds. Know exactly how much time is left without even looking at your screen. Presentation Saver: delivering a keynote? Shush lets you know when your 5 minutes are up so you do not get played off the stage. Focus Friendly: Perfect for meditation, planks, or brewing the perfect pour-over coffee while pretending to listen to your boss on Zoom. Background Intelligence: We have optimized for watchOS background execution, so you can drop your wrist and keep the timer running. TECHNICAL CHOICES: Built with native SwiftUI for buttery smooth performance. Optimized for battery life (because dead watches tell no time). Respects your wrist: Haptics are designed to be felt, not painful. Stop looking at the clock. Start feeling the time. Download Shush and get your vibe check today.
Calypso Ballistics
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Calypso Ballistics turns your Calypso ultrasonic anemometer into a wind instrument for precision shooting: it measures the real wind at your position and breaks it down against your line of fire, ready to take to your ballistic calculator. THE WIND, FROM THE LINE OF FIRE Set the anemometer pointing downrange. The app splits the wind into its crosswind component — with the side it comes from — and its head or tail component, and gives you the wind value and the clock hour it blows from. SHOOTER'S CLOCK AND MAGNETIC ROSE A dial with the shooter's clock — 12 o'clock is the line of fire — inside a magnetic rose turned to your bearing to target. At a glance: which hour the wind is from, what that wind is worth, and how strong. LULL, NOW AND GUST The crosswind bracket over a window you choose, so you see the band the wind moves in instead of chasing the instant reading. AIR DENSITY AND DENSITY ALTITUDE With a WeatherDot paired, or with temperature, pressure and humidity entered by hand, it computes humid-air density and density altitude, with the whole calculation in view. It tells station pressure from barometric, the mistake that hurts a ballistic solution most. NO BLACK BOXES Every formula the app uses is explained inside it. LOGBOOK AND CHARTS Every connection is recorded as a session, with wind, direction, temperature, pressure and humidity. Live charts and CSV export. Data stays on your device. ALSO · Three modes: simple, standard and pro · Long-press configurable readouts · Guide to placing the anemometer pointing at the target · Demo mode to try the app without a sensor · Configurable wind, temperature and pressure units · Screen kept awake while in use · English and Spanish Calypso Ballistics does not compute trajectories or firing corrections: it measures the wind and the atmosphere so your ballistic calculator works with real data. It is a measurement instrument for sport shooting. Requires a Calypso Instruments Bluetooth anemometer. The WeatherDot is optional.
Screenshots
Verdict
The clearest difference is price: Calypso Ballistics at Free against Shush's $0.99. Calypso Ballistics also leads on update cadence (every 5 days vs every 8 months) and iOS requirement (15.0 vs 18.6). 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
Calypso Ballistics is free to download; Shush costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Shush ships an update every 8 months, Calypso Ballistics every 5 days. The most recent releases landed on November 12, 2026 and November 6, 2026 respectively.
| Parameter | Shush | Calypso Ballistics |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 8 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | IBMobile Software | Calypso Instruments |
In-app purchases
Shush
No in-app purchases
Calypso Ballistics
No in-app purchases
Questions
Is Shush free?
Is Calypso Ballistics free?
Do Shush or Calypso Ballistics have ads?
Which is updated more often, Shush or Calypso Ballistics?
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