Light Planner vs Astrian Light
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Light Planner
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Do you want to calculate an exposure time based on the shutter speed and ND filters you have on your camera? LightPlanner will do it for you and you won't have any more headaches in the middle of a photo shoot! It is an exposure value configurator that influences how light enters your camera. This app will help you calculate equivalent values based on the law of reciprocity, with which you can configure different settings to get the right exposure. It helps you to organize your next photo escapades and take pictures with different settings. 1. Select the step scale you need. 2. Set the shutter speed. 3. Select from 1 to 3 ND filters. 4. Get the final exposure time directly calculated. 5. Time it!
Astrian Light
Plan your celestial photography with precise calculations for eclipses, golden hour, and astrophotography. Visualize the sky's events with your real horizon and location data. Includes tools for hyperfocal distance and exposure.
- Eclipse shadow mapping
- Real horizon calculations
- Golden and Blue Hour timing
- Sky object identification
- Trip planning tools
- Photography calculators
- Camera and lens gear saving
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Astrian Light Other apps tell you when the Sun rises. This one tells you whether you’ll actually see it. Astrian Light takes into account the real terrain at the place where you’re going to shoot — a mountain, a ridge, the horizon in front of you — and calculates when you’ll actually see the Sun appear. Not when it should rise over a flat horizon. When you’ll see it from where you’ll be. WHAT IT TELLS YOU · When the best light starts at your location and how long it lasts. · Whether the terrain will block the sunrise, and until when. · How many hours of dark sky you’ll have tonight based on the Moon. · When the Milky Way core will be visible and where it will appear. · What an eclipse will look like from your location and when each phase will happen. YOUR GEAR, INSIDE ASTRIAN Add your cameras and lenses once. From then on, the calculators work with your actual gear: pinpoint-star exposure, hyperfocal distance, depth of field, field of view, filters, and timelapse. If you use an adapter, Astrian automatically calculates the effective focal length. PLAN BEFORE YOU GO Compare locations and nights before deciding where to set up your tripod. Save each plan with its location, date, and the gear you’re taking. Once you’re there, your calculations will still be available even without a signal. ECLIPSES, FREE FOREVER Explore the map of every eclipse, see how much of the Sun will be covered from any location, check the complete timeline, and find out whether the terrain on your horizon will let you see it. Everything related to eclipses is free. Now and always. REAL DATA, EVEN WHEN DATA IS MISSING Astrian doesn’t fill in the gaps with estimates without telling you. If terrain data isn’t available for a location, Astrian will tell you that the calculation is using a flat horizon. If a weather forecast isn’t available, you’ll know that too. If Astrian can’t know something, it tells you. SUBSCRIPTION Astrian Light is free for planning eclipses and checking the sky from your current location. The annual subscription unlocks planning for any date and location, along with your gear and the rest of the advanced tools. The subscription renews automatically until cancelled and can be managed at any time from your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
Light Planner and Astrian Light are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly daily. The most recent releases landed on September 23, 2026 and October 5, 2026 respectively.
| Parameter | Light Planner | Astrian Light |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Daily | Daily |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Carlos Morgado Alarcon | Javier Linero |
In-app purchases
Light Planner
No in-app purchases
Astrian Light
No in-app purchases
Questions
Is Light Planner free?
Is Astrian Light free?
Do Light Planner or Astrian Light have ads?
Which is updated more often, Light Planner or Astrian Light?
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