Comparison

Light Planner vs Star Exposure Calculator

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

Star Exposure Calculator

Features
Read full description

Star Exposure Calculator is an app that helps you calculate the right exposure settings for pin-sharp stars in astrophotography. Features: • Calculate star exposure via simple or complete NPF rule for pin-sharp stars • Calculate star exposure via 500 rule • Calculate focal ratio of your telescope • Telescope magnification calculator • Maximum telescope magnification calculator • Telescope true field of view calculator We constantly update the app to provide more features that users are looking for, so expect even more with future updates.

Screenshots

Light Planner4 screens
Star Exposure Calculator4 screens

Verdict

The call

The clearest difference is ads: Light Planner at none against Star Exposure Calculator's shown. Star Exposure Calculator's advantage is update cadence (every 2 weeks vs every 15 months) and iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· 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, Star Exposure Calculator every 2 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Light Planner versus Star Exposure Calculator: the parameters behind the verdict, then further details
ParameterLight PlannerStar Exposure Calculator
PriceFreeFree
Update frequencyEvery 15 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhoneiPhone, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size6 MB25 MB
Age rating4+4+
DeveloperCarlos Morgado AlarconDejan Boras

In-app purchases

None

Light Planner

No in-app purchases

None

Star Exposure Calculator

No in-app purchases

Questions

Is Light Planner free?
Light Planner is free to download, with no in-app purchases.
Is Star Exposure Calculator free?
Star Exposure Calculator is free to download, with no in-app purchases.
Do Light Planner or Star Exposure Calculator have ads?
Star Exposure Calculator shows ads; Light Planner does not.
Which is updated more often, Light Planner or Star Exposure Calculator?
Light Planner ships an update every 15 months, and Star Exposure Calculator every 2 weeks. Most recently, Light Planner was updated on October 24, 2026 and Star Exposure Calculator on October 27, 2026.

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