Sun n Moon vs PocketGrib
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sun n Moon
This app provides precise sunrise, sunset, moonrise, and moonset times for any location on Earth. It features a compass showing celestial body positions, moon phase animations, and detailed astronomical data. Access information for past and future dates, with offline capabilities.
- Sunrise and sunset times
- Moonrise and moonset times
- Moon phases animation
- Compass showing sun and moon positions
- Location by GPS, city list, lat/lon, or Google Maps
- Accurate times (NOAA standard) offline
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Sun n Moon accurately calculates data for any location on earth for: - Sunrise/Sunset - Moonrise/Moonset - Moon phases animation - Compass showing sun and moon positions **Now on Apple WATCH *** WATCH a VIDEO demo at our site *** http://www.catalyst4.com/sun_n_moon Key Features • Sunrise and sunset times (no network connection required) • Moonrise and moonset times • Specify location by 4 methods: 1) GPS or location services 2) Choose from a list of cities worldwide 3) Latitude and longitude 4) Google Maps • Phase of the Moon/Percentage Illumination • Compass view for navigation showing position of sun and moon (slider animates the position and elevation for different times of the day) • Save a location (startup to the saved location or automatically find current location) • Select any date. Quickly switch between dates using arrows or return to current date. • Easy to read display (in 24 hour or am/pm format) • Handles time zones and daylight savings time • Shows past/future dates for northern/southern extremes when sun is down/up all day • Accurate times (NOAA standard) calculated right on the device (network connection not required) • Details view - time of solar noon, current altitude and elevation for sun and moon
PocketGrib
Access and analyze global weather data, including wind, precipitation, and pressure, directly on your mobile device. Visualize forecasts with animated maps and detailed graphs, perfect for outdoor activities and meteorology enthusiasts.
- Download and view global weather data
- Animated weather map displays
- Meteogram and raw data views
- Configurable GRIB file downloads
- Offline weather data access
- Support for multiple weather models
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With PocketGrib you can download, view and analyse global weather data while on the go. Wind, precipitation, pressure, temperature, wave and other data extracted from GRIB files are displayed through our powerful GRIB viewer interface. Perfect for sailors (both sailing and in the pub), windsurfers, storm chasers, outdoor enthusiasts, amateur and professional meteorologists. Features - Choose your map location and have weather information overlaid - Animation of weather maps - Weather can be viewed as a meteogram (graph) or raw data - Configurable download to minimise file sizes (great for roaming) - GRIB files can be downloaded to your PC via iTunes - Displays online and offline - Support for 3rd party GRIB files PocketGrib downloads and displays the following weather types: - Wind speed and direction (10 m above ground/sea) - Precipitation (rain, snow etc) - Pressure - Air temperature - Waves (including Mediterranean and Black Sea) - Cloud cover - Relative humidity - CAPE (Convective Atmospheric Potential Energy) - Current (Atlantic only) - 500mb Height Direct download of GRIB data from NOAA's GFS (Global Forecast System) model - Forecasts up to 8 days - Data steps: 3hr, 6hr, 12hr - Worldwide coverage - Resolution: 0.25°, 0.5°, 1°, 2° - Data updated 4 times a day (every 6 hours) Also support for COAMPS (0.2° resolution), WW3, NOGAPS, RTOFS (Currents) and FNMOC WW3 (Mediterranean wave) models. GRIB forecasts are published without human intervention or review. As such, the end user requires some knowledge and awareness. Most GRIB models do NOT accurately forecast hurricanes and tropical cyclones so their use should be combined with specific hurricane and tropical cyclone forecasts.
Screenshots
Verdict
Sun n Moon and PocketGrib both sit at 5.0 stars, but that hides the real split: 93% of PocketGrib's written reviews are positive against 59% of Sun n Moon's. PocketGrib also leads on ratings volume (577 vs 8). Sun n Moon's advantage is price ($0.99 vs $5.99) and iOS requirement (8.2 vs 15.0). On rating, update cadence, ads and in-app purchases 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
Sun n Moon costs $0.99 and PocketGrib $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Sun n Moon holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: PocketGrib has 577 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 59% of Sun n Moon's written reviews are positive against 93% of PocketGrib's, so the app with the better star average is not the one people write more warmly about.
Sun n Moon ships an update every 5 weeks, PocketGrib every 2 months. Both last shipped on November 6, 2026.
| Parameter | Sun n Moon | PocketGrib |
|---|---|---|
| Price | $0.99 — better | $5.99 |
| Rating | 5.0 (8 ratings) — better | 4.8 (577 ratings) |
| Positive reviews | 59.2% of reviews | 93.2% of reviews — better |
| Number of ratings | 8 | 577 — better |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #76 — better | #82 |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 8 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Catalyst4 | Nicko Brennan |
Customer experience
Sun n Moon
PocketGrib
User reviews
Sun n Moon
From 8 App Store ratingsWhat we love
- 👍 Simple and easy to use
- 🌟 Well-designed interface
- 🎯 Accurate sun and moon information
- 📸 Great for photographers
- 📍 Automatic location detection
Room to improve
- 📉 Lack of recent updates
- 🐛 Inaccurate data reported
- ⏳ Outdated for new OS
- 🖱️ Inconvenient navigation
- 🏙️ Limited city list
PocketGrib
From 577 App Store ratingsWhat we love
- 🚀 Easy to use
- 🚀 Accurate weather forecasts
- 🚀 Comprehensive data
- 🚀 Reliable and dependable
- 🚀 Useful for planning sailing/boating trips
Room to improve
- 🐛 Occasional crashes or issues with downloads
- 🐛 Wind speed sometimes underestimated
- 🐛 Lack of wave height data for some areas
Bugs and requests
Sun n Moon
Reported bugs
9 issues- App crashes after updates
- Inaccurate time zone data
- Autolocate bug with time zone offset
- App not opening after upgrade
- Location not saving correctly
Show 4 moreShow fewer
- Crashes with iOS 4
- Black boxed text in settings
- Autolocate feature issues
- Daylight saving not saving
Requested features
10 requests- Add Apple Watch compass view
- Save multiple locations
- Add civil twilight information
- Improve interface aesthetics
- Add AM/PM display options
Show 5 moreShow fewer
- Display moon phases visually
- Add zip code entry for location
- Allow saving date ranges
- Add place names instead of coordinates
- Customizable calendar view
PocketGrib
Reported bugs
2 issues- Corrupted map display after recent update
- Inability to download GRIB files in some areas
Requested features
5 requests- Add wave height data
- Improve graphics and visuals
- Provide more weather models to compare
- Faster data updates
- Ability to plot boat position and route
In-app purchases
Sun n Moon
No in-app purchases
PocketGrib
No in-app purchases
Questions
Is Sun n Moon free?
Is PocketGrib free?
Which has better reviews, Sun n Moon or PocketGrib?
Do Sun n Moon or PocketGrib have ads?
Which is updated more often, Sun n Moon or PocketGrib?
Which is more popular, Sun n Moon or PocketGrib?
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