Aquarium intelligence for your tanks: Finn reads your water tests, tap water and journal, scores each tank's health, and suggests what to do next.
Shoal & Stem is aquarium intelligence built on a fish tank log. Finn, an AI sidekick, reads your tanks, water tests and journal, scores each tank's health, and suggests what to do next.
A JOURNAL FOR EVERY TANK
Log each tank with photos and short video clips, from the first fill to a grown-in scape. Track your fish, shrimp, snails and plants, mark the moments that matter, and keep any tank public or private. Put your tanks, and each tank's photos and clips, in the order you want.
FINN, YOUR AQUARIUM SIDEKICK
Ask Finn anything about fishkeeping and aquascaping. Finn reads your tanks, your water tests and your journal, so its answers fit your setup, and it checks the species it suggests against our catalog. Tell Finn what you did, like "did a 25% water change and added three otos", and it logs it for you.
A HEALTH SCORE FOR EACH TANK
Finn scores each tank across 7 factors, from stocking and water quality to maintenance, and explains what's behind the number.
WATER TESTS AND YOUR TAP WATER
Log readings by hand or scan a test strip with your camera, in ppm or degrees for GH and KH. See your city's tap water on My Tanks: chlorine or chloramine, ammonia, nitrate, copper, GH, KH and pH, compiled from public records. Save your own tap test as a tank's Source Water and Finn goes by your numbers.
MAINTENANCE THAT KEEPS UP
Schedules for water changes, dosing, feeding, tests and filter cleaning, with reminders. Pause a schedule, skip a day, name a food for each feeding day, and log partial water changes that count toward your target.
SPECIES AND COMPATIBILITY
A catalog of fish, shrimp, snails and plants with care ranges, tank mates and photos from the community.
A COMMUNITY OF KEEPERS
Follow tanks, react to journal entries, comment, and talk shop in the Tank Room. Read The Current, data stories from Finn built on public records.
ON YOUR PHONE AND THE WEB
Your tanks are the same in the app and at shoalandstem.com.
I don’t know why it won’t edit my last review to add to the many good things to say about this app, but after using it consistently for two months I still have nothing bad to say about it and am continually impressed with all the features it offers for free.One of the things I’ve started to really appreciate (again, besides it being 100% free) is how fast the team implements bug fixes and even feature suggestion. They listen!!! I promise!!! I have already submitted a number of tickets for both bugs and features, and not only have they implemented them within 48 hours every time, but they also send you a personal note in app when they’ve made the change. I genuinely want this app to succeed and to contour being supported, so please spread the word and use it.Their online website also has many more features like a forum and a marketplace, so I really hope it takes off. And devs, please don’t give up hope. The app is still young, so please don’t become discouraged that traffic is still low. I believe in you!
Amazing app for fish keeping
Mat3oC
I never leave reviews but for something like this I have to. It’s a very ingenious app. I’ve been using for a couple of months and staying organized and keeping a record of my tanks has helped me a ton with this hobby. It has an AI integrated that has access to your tanks and journals of each tank, that way when you need to know something or ask something the AI is already up to date (if you use update your journal regularly) and you don’t need to explain a whole background story before getting to the actual problem/question. I really like this app! It should be more known in the community!
Amazing idea and app!
kookiie85
First, real person here, not AI! I never write reviews but love this app so much. When I got into the hobby yearrrs ago , I was looking for an app to track maintenance and stuff for my tanks. I’m weirdly obsessive bout keeping track of them. I could only ever find habit trackers and stocking calculators but never anything so specific and all encompassing to the hobby. Randomly came across an ad on Reddit about this app and it’s EXACTLY what I was looking for! App devs are super responsive and fast to incorporate new ideas or fix any bugs. As someone in the tech industry, I know how much time this can take and I genuinely appreciate it! Great job! 🙌🙌🙌
Look no further than Shoal & Stem
Rapheboy
To be honest I downloaded 5 different apps to track my Aquarium Parameters. The final was Shoal & Stem. The previous 4 all had paywalls or had a poor user interface. Then I arrived at Shoal & Stem. Immediately I noticed a difference and started putting in my parameters. Then I met Finn, an AI compendium of knowledge. Provides more accurate and precise info than my LPS, suggestions and even emails my tanks week in review. If they ever charge a subscription I will definitely subscribe. I love this app. I would definitely give it a try. Currently all the services are free without annoying adds or paywalls.
ARRANGE YOUR TANKS
Tap Arrange on My Tanks and put your tanks in your own order: hold and drag, or use the arrows. Your profile shows them the same way, here and on the website. New tanks start at the top.
PHOTOS AND VIDEOS IN ONE LIST
Drag a tank's photos and clips into the order you want. The first photo is the cover. Back to newest first puts them back.
FASTER PHOTOS
Photos load faster, full-screen photos open right away, and a clip shows its still while it starts. Uploads go two at a time and retry when the connection drops, and a journal photo that fails to upload is no longer dropped.
FINN
The chat opens on your newest message. Finn now checks the species it suggests against our catalog for your tank, knows today's date, and knows when your next water change is due.
MORE
Every aquatic plant now asks for a planting density, including plants you added before. The tap water card on My Tanks is one compact row. A private tank shows how to make it public. Journal entries keep their line breaks and "&" from the website.
Version 1.0.19
The developer, Shoal and Stem, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
Location
Contact Info
User Content
Identifiers
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Shoal and Stem LLC
Size
58.8 MB
Category
Lifestyle
Compatibility
Requires iOS 15.1 or later.
iPhone Requires iOS 15.1 or later.
iPod touch Requires iOS 15.1 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.