Comparison

zero vs Solar Shading Survey

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

Head to head
About

zero

Features
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Anxious about climate change? Want to take action to manage your climate impact? Talk to zero. zero is an AI agent built to help you understand, reduce, and offset your climate impact. By estimating the carbon emissions associated with your activities and providing an extremely easy way to purchase vetted, high-quality carbon offsets, zero is here to be your trusted agent for climate action. Talk to zero. Protect the planet.

About

Solar Shading Survey

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Solar Shading Survey is a simple tool for solar shading surveys and horizon profile capture. Capture azimuth and elevation points, visualize the solar diagram and horizon profile, attach photos to the survey, then export your data in CSV, TXT or HOR format. The app is designed for solar shading checks, PV site surveys, photovoltaic pre-studies and horizon profile documentation. Features: • Azimuth / elevation point capture • Near and far shading documentation • Solar diagram • Horizon profile visualization • Photos linked to the survey • CSV / TXT / HOR export • Simple use, no account required Solar Shading Survey provides a straightforward way to capture, visualize and export solar shading data. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://azimutis.app/en/privacy.html

Screenshots

zero3 screens
Solar Shading Survey3 screens

Verdict

The call

The clearest difference is in-app purchases: zero at none against Solar Shading Survey's 2. zero also leads on iOS requirement (13.4 vs 17.6). Solar Shading Survey's advantage is update cadence (monthly vs every 4 months). On price, ads 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. Solar Shading Survey sells 2 in-app purchases, starting at $3.99 per month. zero asks for nothing beyond the download.

UpkeepUpdate frequency

zero ships an update every 4 months, Solar Shading Survey monthly. The most recent releases landed on September 14, 2026 and August 7, 2026 respectively.

Scorecard3 real differences Ā· 3 level
zero versus Solar Shading Survey: the parameters behind the verdict, then further details
ParameterzeroSolar Shading Survey
PriceFreeFree
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.4 — better17.6
Further details — not scored
Size34 MB40 MB
Age rating4+4+
DeveloperCole Stites-ClaytonFrederic Billon

In-app purchases

None

zero

No in-app purchases

2 purchases

Solar Shading Survey

Subscriptions2
  • Pro7 Days trial$3.991 Month
  • Pro7 Days trial$24.991 Year

Questions

Is zero free?
zero is free to download, with no in-app purchases.
Is Solar Shading Survey free?
Solar Shading Survey is free to download, with in-app purchases available.
Do zero or Solar Shading Survey have ads?
Neither zero nor Solar Shading Survey shows ads.
Which is updated more often, zero or Solar Shading Survey?
zero ships an update every 4 months, and Solar Shading Survey monthly. Most recently, zero was updated on September 14, 2026 and Solar Shading Survey on August 7, 2026.

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