TinyCelsius vs Hygrometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TinyCelsius
This app displays current weather conditions with both Celsius and Fahrenheit side-by-side for easy reading. It offers a menu bar item on Mac and widgets for iPhone's Home and Lock Screens, allowing quick access to local weather data.
- Celsius and Fahrenheit side-by-side
- Current location or pinned city
- Mac menu bar weather item
- iPhone Home Screen and Lock Screen widgets
- Weather condition symbol and update time
- Unit order and decimal controls
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TinyCelsius keeps current weather small, readable, and always nearby. See Celsius and Fahrenheit together without mental conversion. On Mac, TinyCelsius lives in the menu bar near the clock. On iPhone, it gives you a simple weather view and widgets for the Home Screen and Lock Screen. Use your current location or set a city. TinyCelsius loads live weather, shows the current condition, and lets you choose whether Celsius or Fahrenheit appears first. On Mac, you can keep the menu bar item compact, show or hide the condition icon, and refresh from the panel. On iOS, widgets can show the latest temperature pair and optional refresh time. Features: * Celsius and Fahrenheit side by side * Current location or pinned city * Mac menu bar weather item * iPhone Home Screen and Lock Screen widgets * Weather condition symbol and update time * Unit order, decimal, and compact menu bar controls * Local weather powered by WeatherKit TinyCelsius is intentionally focused: current conditions, quick reading, and no account to manage. All data is on device and using Apple Weather for realtime weather information – we don't have access to your location at any time.
Hygrometer
This app helps you monitor and prevent mold and condensation by calculating surface humidity, not just room humidity. It provides real-time alerts based on surface temperature and outdoor weather forecasts, and advises on optimal times to ventilate your home.
- Surface humidity calculation
- Mold and condensation risk alerts
- Dynamic humidity limits based on forecast
- Ventilation advice (driest hour)
- HomeKit sensor integration
- Manual data input
- Outdoor weather data display
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Mold does not grow because a room is humid. It grows on the one surface that is colder than the rest — a corner, a window reveal, the wall behind a wardrobe. The air touching that surface can sit at 97% while the middle of the room reads a comfortable 55%. Hygrometer works out what is happening on that surface, and tells you the humidity to keep the room under. WATCH A ROOM • Add the cold surface you are worried about: a corner, a window reveal, an uninsulated wall, single or double glazing • See the humidity at that surface, not just in the room • Get the limit for the room, worked out from the surface temperature and the weather outside • That limit moves with the forecast — the same wall tolerates 73% on a mild day and 41% in a cold snap THREE WAYS TO GET THE NUMBERS • A HomeKit humidity sensor, read automatically — Eve Room, Aqara, SwitchBot, Netatmo and others • Typed in from your own hygrometer, whenever you check it • Or neither: Hygrometer estimates the likely range from the outdoor conditions and how the room is used, using the EN ISO 13788 humidity classes. Shown as a range, never as a measurement of your room WARNINGS THAT ARRIVE IN TIME • Mold risk when the surface reaches 80% humidity, which is long before anything looks wet • Condensation when the surface falls below the dew point • And before either: a colder forecast tonight pulls the limit down, so the warning comes before the surface turns, not after SHOULD YOU OPEN THE WINDOW? The answer relative humidity gets backwards. Airing out only dries a room when the outdoor air carries less water in absolute terms. In winter it nearly always does, even at 90% outside. On a warm humid day it often does not, and opening a cool room makes it damper. Hygrometer compares both sides in g/m³ and names the driest hour of the day. THE OUTDOOR INSTRUMENT • Outdoor relative humidity on a 0–100% analog dial with comfort bands • Dew point, absolute humidity in g/m³, mixing ratio, pressure and conditions • 24-hour humidity chart • Home Screen and Lock Screen widgets, which fetch their own reading rather than waiting for you to open the app ALSO • Follow your location, or search any city worldwide • °C / °F throughout • Eight languages • No account, no tracking, no ads Outdoor readings come from Apple Weather. Indoor readings come from your own sensor or from you — iPhone has no humidity sensor, and this app never pretends otherwise. Weather data provided by Apple Weather.
Screenshots
Verdict
The clearest difference is device support: TinyCelsius at 3 against Hygrometer's 1. Hygrometer's advantage is iOS requirement (17.0 vs 26.0). On price, rating, ratings volume and ads 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for TinyCelsius against 5.0 for Hygrometer. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
| Parameter | TinyCelsius | Hygrometer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Dion Software, LLC | Pixelated Development |
Customer experience
TinyCelsius
Hygrometer
In-app purchases
TinyCelsius
No in-app purchases
Hygrometer
No in-app purchases
Questions
Is TinyCelsius free?
Is Hygrometer free?
Which has better reviews, TinyCelsius or Hygrometer?
Do TinyCelsius or Hygrometer have ads?
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