SunGraph vs AstroNav SkyDial
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SunGraph
Calculate sunrise and sunset times for any location globally and any day of the year. Explore earliest/latest times, the equation of time, and sun inclination. Visualize the sun's position on Earth.
- Sunrise and sunset times worldwide
- Earliest and latest sunrise/sunset
- Equation of time display
- Sun inclination at transit
- World view of sun's position
- User location database
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SunGraph is a sunrise and sunset calculator showing sunrise and sunset times for anywhere in the world and for any day of the year. For any latitude the earliest and latest sunrise and sunset times will be displayed. The analemma screen displays the equation of time along with the inclination of the sun above the horizon at transit. A world view shows the location of the sun on the Earth for the current time, or any day of the year. A data base can store user locations.
AstroNav SkyDial
Visualize celestial movements in real-time with a dynamic dial showing the sun, moon, and planets. Explore upcoming astronomical events and plan your stargazing sessions.
- Real-time sun and moon tracking
- Planetary movement visualization
- Interactive sky dial
- Event feed for stargazing opportunities
- 48-hour forecast slider
- Zodiac constellation identification
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Track the sun, moon moving above you in real time with solar and moon rise / set. AstroNav keeps track of planetary movement as the day progresses, highlighting the sun, moon, planets, and zodiac constellations. Drawn as a single living dial, AstroNav shows that "now" is always a moment under the stars. PLAY THROUGH THE DAY Tap play and watch your day unfold — the sun climbs and sets, the moon rises, the light shifts hour by hour, each event lighting up as it passes. Or slide through a 48-hour window and jump to any date to see where the sun, moon, and planets will be. The dial, the light, and the sky move with you. WHEN TO LOOK UP The events feed knows when the sky is worth stepping outside for — the clear, dark, moonless windows best for stargazing, alongside full moons, meteor showers, conjunctions, equinoxes, and more. No alerts, no nagging; it's simply there when you open it. INTERACTIVE SKY DIAL Quickly identify celestial bodies overhead based on your current time and estimated position. Prepare your star sights before twilight. Privacy Policy: https://timespaceatlas.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: AstroNav SkyDial at 100% against SunGraph's 57%. AstroNav SkyDial also leads on rating (5.0 vs 3.1) and update cadence (every 2 weeks vs every 4 months). SunGraph's advantage is in-app purchases (none vs 2) and ratings volume (12 vs 2). On price, ads, monetization model 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
Both are free to download. AstroNav SkyDial sells 2 in-app purchases, starting at $1.99 per year. SunGraph asks for nothing beyond the download.
AstroNav SkyDial holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: SunGraph has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 57% of SunGraph's written reviews are positive against 100% of AstroNav SkyDial's.
SunGraph ships an update every 4 months, AstroNav SkyDial every 2 weeks. The most recent releases landed on September 28, 2026 and October 12, 2026 respectively.
| Parameter | SunGraph | AstroNav SkyDial |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (12 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 56.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 12 — better | 2 |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, Apple Watch |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 11 MB | 106 MB |
| Age rating | 4+ | 4+ |
| Developer | Tremont Air, LLC | Timespace Atlas, LLC |
Customer experience
SunGraph
AstroNav SkyDial
In-app purchases
SunGraph
No in-app purchases
AstroNav SkyDial
- AstroNav Pro Annual$1.991 Year
- AstroNav Pro (Lifetime)$9.99







