Solspot: Plant Light Meter
Lux Meter · What Grows Here
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Every light reading free, including direct sunlight. No diffuser to buy, no subscription, no ads.
Solspot measures how much light a spot in your home actually gets — then tells you which plants will live there.
Lay your phone flat where the plant will sit, screen toward the light. Solspot reads your camera's light meter and gives you an honest answer: a category, a number, and the real range around it.
MEASURE THE SPOT, NEVER THE PLANT
Light is a property of a place, not a leaf. Solspot measures the light arriving where a plant would sit, the same way a leaf receives it.
AN HONEST ANSWER, NOT FAKE PRECISION
Every reading comes with the range it could really be. When your device hasn't been calibrated, the range widens and Solspot says so. If a spot is brighter than the camera can measure, Solspot tells you that instead of inventing a number.
PLANTS THAT WILL ACTUALLY LIVE THERE
Matched against your measured light — with the caveats included. A plant that will survive but sulk is shown as exactly that, not hidden behind a percentage.
CARE THAT STARTS FROM THE LIGHT
Add the plants you own and Solspot works out how often to check each one — from the light it measured where the plant stands, the pot it is in and the season, not from a calendar. It asks you to check the soil rather than telling you to water, learns from what you find, and sends one reminder a day that names every plant due. Your care history and notes stay on your phone, and you can export all of it. The daily reminder is part of Solspot Pro for anyone who installs from version 1.7.
SEE IT IN YOUR ROOM
Stand a plant on your own floor at the size its species actually reaches, across its published size range. 22 of the 200 species have a 3D model. Part of Solspot Pro for anyone who installs from version 1.7.
PET SAFETY, SOURCED NOT GUESSED
Pet toxicity comes from the ASPCA's lists and nowhere else. When ASPCA doesn't list a species, Solspot says "unverified" rather than guessing. "We don't know" is never presented as "safe".
SAVED SPOTS AND SEASONAL RE-CHECKS
Save a windowsill and watch its light change through the year. Light in January is not light in July, and Solspot reminds you to re-check.
FULLY OFFLINE
No account and no server. Your plants, spots and photos stay on your phone. While measuring, the camera is a light sensor and no image is captured at all. In "See it in your room" and the sun's path it is a viewfinder, and the only picture that exists is one you take yourself — saved to your own Photos, and going nowhere else unless you share it. If you let Solspot use your location for the sun, it is rounded to about 10 km and stays on your phone.
FREE, WITH AN OPTIONAL ONE-TIME PRO
Every light reading including direct sunlight, the category and its honest range, plant matches with their caveats, every filter, buy links, the Learn stories, unlimited saved spots, care for every plant you own and a full export of your data: free. Nothing you can use today will ever be locked.
Solspot Pro is one purchase, never a subscription, and adds:
• This spot through the year: when sun reaches the window and how the light changes month by month with your local weather, with the sun's path drawn over the view
• Compare spots: which of your spots gets the most light
• Grow-light planner: how close to hang a white lamp, checked with the camera, and how long to run it
• What's wrong with my plant? Likely causes from what you see, pests and false alarms included
• Light through the day: morning, midday and evening readings show how a spot's light moves
• See it in 3D: turn a plant around before you buy one
• Photo journal, with then and now side by side
• Growth time-lapse: a plant's photos as a short video
• Repot dates, and rhythms for turning, cleaning leaves, pest checks and pruning
• Alternate app icons
• The daily care reminder and "See it in your room", which stay free for everyone who installed Solspot before version 1.7
No ads, ever.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Solspot Pro is here: one optional purchase, never a subscription. Everything you can use today stays free, including every light reading.
Pro adds:
• This spot through the year: when direct sun reaches the window, how the light changes month by month with your local weather, and the sun's path drawn over the view
• Compare spots: which of your spots gets the most light
• Grow-light planner: how close to hang a white lamp, checked with the camera, and how long to run it
• What's wrong with my plant? Likely causes from what you see, pests and false alarms included
• Light through the day, See it in 3D, a photo journal with a growth time-lapse, repot dates and care rhythms, and alternate app icons
Already using Solspot? The daily care reminder and "See it in your room" stay free for you, for good. For new users they are part of Pro.
Also new, for everyone: plant names in Spanish, Italian, Japanese, Korean, Portuguese and Chinese, so searching in your own language finds the plant. "Export everything" now includes your photos.
Fixed:
• On the care screens, the light category showed in English in every language.
• Cover photos were stored at three times the size they needed.
The measurement engine has not changed, so your saved readings keep their categories.
The developer, Bald Software Development Studio UG, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Bald Software Development Studio UG (haftungsbeschrankt)
- Size
- 80.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 9 more
- English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Solspot Pro $9.99
- Copyright
- © 2026 Bald Software Development Studio UG (haftungsbeschränkt)

