BlubHub – Aquarium tracker
Water values, trends & care
Free · Designed for iPad. Not verified for macOS.
Keep your aquarium in balance without the spreadsheet: log water tests in seconds, spot trends early and never miss a water change. All local, no account needed.
BlubHub is the logbook for your aquarium. Track your water values, see at a glance whether everything is in balance, and get nudged before something becomes a problem. For saltwater and freshwater tanks alike.
WATER VALUES & TRENDS
• 19 parameters: pH, alkalinity, calcium, magnesium, nitrate, phosphate, salinity, temperature and more
• Test sessions with a timer per test — run several measurements at once
• A running test timer stays in view on your lock screen, and you get a nudge when it runs out
• Charts and history per value, with target bands per tank
• Custom safe bands per tank: a reef makes different demands than an Amazon biotope
• Instantly see what is drifting and in which direction
CARE ON A RHYTHM
• Reminders for water changes, testing, dosing, feeding and filter maintenance
• See what is due today, what is coming up and what is overdue
• Home-screen widgets: balance, water values and your next task, which you can tick off right there
• Notes per tank, so your logbook is actually complete
PHOTOS & TIMELINE
• A timeline per tank: readings, notes and photos, moment by moment
• A built-in tank camera for photos and short videos. Where your device allows it, it corrects the colors for your aquarium lighting
• A timeline of its own for every inhabitant, from the day you bought it
YOUR AQUARIUM, COMPLETE
• Inhabitants with species, count and photos, from a catalog of 600+ fish, corals, invertebrates and plants, each with an illustration and care notes
• Tankmate matrix and suggestion wizard: see which species get along
• Equipment overview: filter, lighting, heater, wavemakers
• Multiple tanks side by side, salt and fresh mixed freely
PRIVACY FIRST
• Everything lives locally on your device — no account required
• No ads, no tracking, no third-party analytics
• Optional: back up your logbook online, share a tank with housemates or show it on a public page — you choose what gets synced
BlubHub is available in English, Dutch, German, French, Italian and Spanish.
Privacy policy: https://blubhub.ohhi.nl/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New for saltwater tanks: nutrient balance. Under your water values you see the ratio of nitrate to phosphate, and what an imbalance means for corals and algae.
Tick off a reminder straight from its notification, also on your watch.
Shoot sideways with the tank camera and the photo now turns with it and fills the frame.
If sharing fails, you now see why.
A shared inhabitant photo now shows its species, with species info.
An inhabitant photo you deleted online can be shared again.
The developer, Geraedts Holding B.V., 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:
- Contact Info
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Geraedts Holding B.V.
- Size
- 62.2 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 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+
- Contains
User-Generated Content
- Copyright
- © Geraedts Holding B.V.