Day & Night Map vs C
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Day & Night Map
Visualize the Earth's day and night cycles on an interactive world map. Select any date and time to see current illumination, or create animated GIFs of changing light patterns.
- Real-time day/night map
- Selectable date and time
- Animated GIF creation
- Minute-by-minute updates
- Global illumination visualization
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Day & Night Map shows you exactly which parts of Earth are in daylight and which are in darkness — right now, or at any date and time you choose. Watch the terminator move across the globe as hours and days pass. Explore sunrise, sunset, and twilight around the world. Perfect for travellers, astronomers, photographers, teachers, and anyone curious about time on our planet. KEY FEATURES • Live world map of day and night • Move through time with intuitive date and time controls • Jump back to the current moment with one tap • Pinch to zoom and pan across the map • Full-screen map view • Home Screen widgets in multiple sizes (including Extra Large on iPad) • Configurable widgets: sun, moon, moon phase, twilight, icon size, and more • Show sun and moon positions on the map • Display the current moon phase • Twilight zones: smooth shading or separate civil, nautical, and astronomical twilight • Equator and tropics lines • Show your current location on the map (optional) • Display time in local time or UTC • Light, dark, or system appearance • Share a map image by email, message, and more • Create animations over a chosen time range • Export animations as animated GIFs ANIMATIONS Pick a start and end date, set the step interval and speed, and watch the day/night line move over hours or days. Play the animation in the app or create an animated GIF to share. HOME SCREEN WIDGET Add the widget to your Home Screen and keep the current day/night map at a glance. Customize what is shown and how it looks directly when adding or editing the widget.
C
This app provides Canadian boaters with 24-hour marine towing and assistance. It offers real-time weather updates, tide predictions, and helps locate nearby marine facilities. Members receive free services, while non-members can access assistance at an hourly rate.
- 24-hour marine towing and assistance
- Environment Canada marine weather updates
- Fisheries and Oceans Canada tide predictions
- Buoy observations
- GPS location pinpointing
- Locate nearby marine facilities
- Membership management
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A Canadian Marine Assistance App is now available, helping to provide a stress-free boating experience for you and your family. C-Tow Marine Assistance Ltd has been providing "Peace of Mind Boating" for Canadian boaters since 1984. Now with 30+ tow boats serving Ontario and BC, we're on 24 hr standby ready to assist. C-Tow App Features: iPhone & iPad Version available. - Fast effective way to contact C-Tow for 24hr marine towing and assistance services. C-Tow can also be contacted by phone at 1 888 354 5554 - Check current Environment Canada Marine Weather, including weather alerts - Check report weather from members or submit reported weather - Fisheries and Oceans Canada Tide predictions for coastal areas - Buoy observations from nearby stations within Canada and the United States - Pinpoint your location through your phones GPS and provide C-Tow Dispatch your Latitude and Longitude for a fast response to your vessel* - See your speed and compass heading - Locate nearby marinas, fuel docks, and marine facilities. - Join, view or update your C-Tow membership C-Tow service is available for members free of charge and non-members on an hourly rate. For detailed information on C-Tow and our services please see our website at www.C-Tow.ca or contact us at 1 888 354 5554 In the event of a life-threatening situation, your first call should be to Coast Guard. C-TOW membership allows for stress free-boating. Four great package options to choose from Member benefits include: • Free boat tows • Fuel delivery • Soft ungroundings • Fog shepherding • Jump starts • Minor on-scene repairs • Over 30 C-Tow service boats • C-Tow member discounts • Trip planning/registry • Marine concierge service • 24-hour assistance *The accuracy of our data is based solely on the accuracy of your phone’s internal GPS.
Screenshots
Verdict
The clearest difference is rating: Day & Night Map at 4.8 against C's 1.0. Day & Night Map also leads on ratings volume (1.4K vs 2) and review sentiment (76% vs 55%). C's advantage is update cadence (every 5 weeks vs every 7 months) and iOS requirement (11.0 vs 17.6). On price, ads, in-app purchases and monetization model 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.
Day & Night Map holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Day & Night Map has 1.4K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 76% of Day & Night Map's written reviews are positive against 55% of C's.
Day & Night Map ships an update every 7 months, C every 5 weeks. The most recent releases landed on October 19, 2026 and September 21, 2026 respectively.
| Parameter | Day & Night Map | C |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (1.4K ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 76.3% of reviews — better | 55.0% of reviews |
| Number of ratings | 1.4K — better | 2 |
| Update frequency | Every 7 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 48 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Volker Voecking Software Engineering | C-Tow Marine Assistance Ltd |
Customer experience
Day & Night Map
C
Bugs and requests
Day & Night Map
Reported bugs
2 issues- Moon position not displayed on iPad
- Daylight savings time not working properly
Requested features
4 requests- Option to keep noon at center and have map move
- Show analemma and sun position on it
- 24-hour clock setting for widget
- Improve moon position display on iPad
C
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Day & Night Map
No in-app purchases
C
No in-app purchases









