Comparison

Light Planner vs Astrian Light

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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!

About

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.

Highlights
  • Eclipse shadow mapping
  • Real horizon calculations
  • Golden and Blue Hour timing
  • Sky object identification
  • Trip planning tools
  • Photography calculators
  • Camera and lens gear saving
Features
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Other apps tell you when the sun rises. This one tells you whether you'll see it. Astrian Light knows the real terrain where you're going to shoot —the ridge, the building, the hill in front of you— and tells you when the sun actually clears it. Not when it rises on a flat horizon that doesn't exist. WHAT IT ANSWERS · When the good light starts at your spot, and when the terrain takes it away. · Where the sun rises and sets, right on the map. · How many hours of dark sky the Moon leaves you tonight, measured against your horizon. · When the Milky Way core rises, and which is the next moonless night. · What the eclipse will look like from where you'll be, when, and how long totality lasts. ECLIPSES, ALWAYS FREE On August 2, 2027, a total solar eclipse crosses Spain. The map of every eclipse, how much of the sun is covered from any point, the timeline to the second, and whether your horizon lets you see it. No subscription, now or ever. YOUR GEAR, BUILT IN Over 600 lenses and 230 cameras in the catalog; if yours isn't there, type it in. From then on, the ten calculators speak your gear: exposure without star trails, hyperfocal, depth of field, field of view, filters, timelapse. And "Your frame" shows how the shot will look in your camera before you go. THE SKY, RIGHT NOW Point your iPhone at the sky and augmented reality tells you what you're looking at: planets, constellations, the space station, deep sky. PLAN BEFORE YOU LEAVE Compare several destinations and several nights at once. Save plans with their place, their date and the gear you're taking. And bring the verdict with you: the calculations work without signal. YOUR WAY Buttons with symbol and name, or name only. Light and dark themes. Times in your iPhone's format. In English, Spanish and Portuguese, on iPhone and iPad. WHAT IT WON'T DO It doesn't make data up. When it doesn't know, it says so: if there's no measured terrain for your point, it tells you the figure is for a flat horizon. If the forecast doesn't reach, it won't invent one. SUBSCRIPTION Astrian Light is free for eclipses and for today's sky where you are. Everything else —any date, any place, the whole sky, all your gear— needs the yearly subscription. It renews until you cancel, and you cancel from your Apple account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Light Planner4 screens
Astrian Light4 screens

Verdict

The call

The clearest difference is update cadence: Astrian Light at daily against Light Planner's every 15 months. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Light Planner ships an update every 15 months, Astrian Light daily. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Light Planner versus Astrian Light: the parameters behind the verdict, then further details
ParameterLight PlannerAstrian Light
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 15 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPad — better
Requires iOS17.017.0
Further details — not scored
Size6 MB60 MB
Age rating4+4+
DeveloperCarlos Morgado AlarconJavier Linero

In-app purchases

None

Light Planner

No in-app purchases

None

Astrian Light

No in-app purchases

Questions

Is Light Planner free?
Light Planner is free to download, with no in-app purchases.
Is Astrian Light free?
Astrian Light is free to download, with no in-app purchases.
Do Light Planner or Astrian Light have ads?
Neither Light Planner nor Astrian Light shows ads.
Which is updated more often, Light Planner or Astrian Light?
Light Planner ships an update every 15 months, and Astrian Light daily. Most recently, Light Planner was updated on November 4, 2026 and Astrian Light on October 31, 2026.

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