HoriSol vs Daily Angle
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
HoriSol
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No hype. Real numbers. HoriSol calculates whether a balcony solar kit actually makes sense at your specific location β using real photo-based shading measurements and conservative assumptions you can actually understand. 6 STEPS TO YOUR YIELD ESTIMATE 1. Location β GPS or address search 2. Panel β power, orientation, tilt, multiple arrays (East/West) 3. Shading β three photos per orientation, real horizon analysis 4. Consumption β household profile with heat pump, EV, hot water 5. Economics β investment cost, electricity price, feed-in tariff 6. Result β annual yield (kWh), payback period, self-consumption rate, COβ savings WHY OTHER APPS ARE TOO OPTIMISTIC Vendor calculators use idealized data. HoriSol measures your actual shading from photos, corrects known bias in hourly aggregations, and pulls solar data from the best available source for your location: β’ PVGIS for Europe and Africa β’ PVWatts for the USA β’ NASA POWER as global fallback Results carry a Β±10% confidence range β no black box, no magic numbers. NO COMPROMISES β’ Fully offline β no cloud required, no tracking β’ No account, no sign-up, no email β’ All model assumptions openly documented β’ Country-specific defaults: electricity prices, load profiles, feed-in rates PREMIUM β ONE-TIME, NO SUBSCRIPTION A single purchase unlocks: β’ 3-page professional PDF report (vs. 1 page free) β’ Up to 20 saved configurations (vs. 1 free) β’ Multiple arrays with separate shading analysis β’ Detailed load profile upload (custom consumption data) WHO IS HORISOL FOR? HoriSol is for renters and homeowners who want an honest answer β not for people already convinced who just want confirmation. If the numbers don't add up, the app will tell you that too.
Daily Angle
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More solar yield through the right angle β recalculated every day. Adjusting your solar panel tilt angle regularly can increase your annual yield by up to 5%, depending on location and season. Tilt calculates the optimal tilt angle for today and tomorrow based on your location, sun position, and weather forecast β simply read it off and align your panels accordingly. CAMPING MODE Designed specifically for mobile solar setups: Camping Mode shows you the best tilt angle separately for morning, midday, and afternoon. Perfect if you're on the road and want to readjust several times a day to get the most out of your mobile solar system. FEATURES - Daily angle recommendation based on weather data and sun position - Next-day preview for advance planning - Uses GPS location for precise calculations WHO IS THIS APP FOR? - Owners of solar systems with adjustable mounts - Campers and van-life users with mobile solar panels - Anyone who wants to understand how sun position and weather affect the optimal angle
Screenshots
Verdict
The clearest difference is in-app purchases: Daily Angle at none against HoriSol's 1. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. HoriSol sells 1 one-off in-app purchase. Daily Angle asks for nothing beyond the download.
| Parameter | HoriSol | Daily Angle |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 β better |
| Further details β not scored | ||
| Size | 33 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Malte SchlΓΌter | Sebastian Kuehner |
In-app purchases
HoriSol
- HoriSol Premium (Lifetime)$5.99
Daily Angle
No in-app purchases





