Blackthumb: Houseplant care

Name: Blackthumb: Houseplant care
Rating: 5 (2 reviews)
Author: Lee Griffith

By: Lee Griffith App

Reminder, Light Meter, Tracker

Overview

Version:

1.1.3

Last updated: 2026-07-13

Ranking

#785,825 ▼ 1,346

Overall

Features & Capabilities

Do your plants keep dying? You're not alone, and it's probably not your fault.

Most plants fail because of one problem: light. Too little and they slowly starve. Too much and they burn out. Blackthumb gives you a Light Score for every plant and location in your home so you finally know what's going on.

— LIGHT SCORE CALCULATOR Stop guessing. Enter your light readings (in lux, fc, or PPFD) and Blackthumb calculates your plant's Daily Light Integral (DLI) — the actual amount of usable light it receives each day. See instantly whether your Monstera is getting enough light in that corner, or if your grow light is doing its job. Compare against your plant's ideal range and get a clear "too low / in range / too high" rating.

Track natural light and grow light separately. See a confidence score that improves as you log more readings. Powered by real plant science, not vague color zones.

— CARE REMINDERS THAT ACTUALLY WORK Set reminders for watering, fertilizing, rotating, misting, pruning, repotting, pest treatment, and health checks — for any plant or location. Snooze what you need to, perform what's due, and never wonder "did I water that one?" again.

Sub-reminders make your care routine smarter: set a fertilizing reminder that automatically triggers every 3rd time you water. No manual tracking needed.

— ORGANIZE BY SPACE, NOT JUST SPECIES Your plants live in specific places — a bright windowsill, a dim shelf, a grow tent. Blackthumb organizes around locations (Living Room, Bedroom, Balcony) so you can see everything in a space at once and manage care by room.

Create collections to group plants however makes sense to you: new cuttings, wishlist, plants to watch, seasonal rotation.

— FULL CARE HISTORY Every watering, every fertilizer, every repot — logged with notes. See your plant's complete care timeline at a glance and spot patterns before problems start.

— FREE TO START, PREMIUM WHEN YOU'RE READY Blackthumb is free to download. Start tracking your plants immediately. Upgrade to Premium for unlimited plants, unlimited locations, all reminder types, and the Light Score Calculator.

Built for people who kill plants — and want to stop.

https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

User Growth & Download Statistics

App

By:

Lee Griffith

Rating:

5.00

(2)

Version:

1.1.3 Last updated: 2026-07-13

Version code:

888197055

Creation date:

2026-06-11

Compatible devices:

Size:

59.07MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-17

Compare stats and ranking:

Ranking

# 785,825 ▼ 1,346

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Lee Griffith

Apple Apps Store

https://apps.apple.com/us/app/blackthumb-houseplant-care/id6763190267

Website:

https://blackthumbplant.app/

User Reviews

These are the types of developers we need to support!! This app has it all! There’s reminders and logs for fertilization, watering, repotting, pest treatments, and tons of other stuff! It also has a built-in light meter, and details about how much light each plant in your collection needs. It will give you advice based on your inputs! I have been using it for 1 day and have already made changes in where my plants live in my house. Very impressive and intuitive with many functionalities, all in one user-friendly app :) Usually to get these tools you have to download separate apps for each one or different physical products! Also, two weeks free for the light insights is really really cool. It keeps this knowledge accessible to all plant hobbyists at any level and breaks the idea that you need expensive tools to grow your plants well. Good on the developers <3 I will recommend this to all plant lovers I know!