Sunpatch: Sun Hours & Shade
How much sun does it get?
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Every seed packet and plant label is written in hours of direct sun. Almost nobody knows what their own garden actually gets — so the tomatoes go in the shady corner and never ripen.
Sunpatch answers the question with a number.
MEASURE YOUR OWN SKYLINE
Other sun apps show you where the sun is. That is the easy half. The half that decides whether anything grows is what stands in the way: the fence, the garage, next door's lime tree. Point your phone at the top of each one, or enter its height and distance, and Sunpatch builds the skyline around that exact spot.
REAL HOURS, ANY DAY OF THE YEAR
The app walks the day minute by minute and counts only the light that actually reaches you. You get the total, the first and last sun, the longest unbroken stretch — and the same figures for every day of the year, so you can see the bed that bakes in July sit in shadow from October.
FULL SUN OR PART SHADE, SETTLED
Sunpatch classes each spot the way plant labels do: full sun, part sun, part shade, full shade. Then it matches 135 plants — vegetables, herbs, fruit, flowers, shrubs, houseplants and lawn — against the light you actually have, and tells you plainly what will not work.
WHAT IF YOU CUT THAT TREE BACK
Tap any obstruction and see exactly how many hours removing it would give you. Sometimes it is two hours. Often it is nothing at all — which is worth knowing before anyone reaches for a saw.
DECIDUOUS TREES ARE HANDLED PROPERLY
A bare lime tree in February is not the same obstruction as the same tree in July. Sunpatch drops it to a bare canopy outside the leaf season, and counts dappled light at what it is worth instead of rounding it to nothing.
THE SUN COACH
Ask what to plant, why something is struggling, or how to win back an hour. It answers from the numbers you measured, not from generic advice. The Coach is the one part of Sunpatch that runs on a server instead of your phone, so it needs Pro and a free account.
WORKS OFFLINE, AND WITHOUT SIGNING IN
Every calculation runs on your phone using the NOAA solar algorithm, so measuring, the charts, the whole year and the plant library all work in aeroplane mode with no account at all. Signing in is optional and does one thing: it backs your spots up, so a lost phone is not a lost season. No ads, no analytics, no tracking.
SUNPATCH PRO
The free app measures one spot completely. Pro adds unlimited spots, the Sun Coach, what-if on every obstruction and the full year on any date.
SUBSCRIPTION TERMS
Sunpatch Pro is offered as a monthly or a yearly auto-renewable subscription. A subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel it at any time in your App Store account settings.
Terms of Use (EULA): https://szymdzie.github.io/sunpatch/terms.html
Privacy Policy: https://szymdzie.github.io/sunpatch/privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixes a crash on launch that affected anyone who was signed in.
The developer, Szymon Dziedzic, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Szymon Dziedzic
- Size
- 69.9 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sunpatch Pro Yearly $17.99
- Sunpatch Pro Monthly $3.99
- Copyright
- © 2026 Szymon Dziedzic