--- title: "Reeflo: reef aquarium tracker | Develak" description: "Reeflo is an iPhone app to log reef aquarium water tests in seconds, track parameters with trend charts, manage maintenance, dosing, and livestock." url: https://develak.com/apps/reeflo/ language: en updated: 2026-09-27 source: Develak translations: fr: https://develak.com/fr/applications/reeflo.md --- Canonical page: # Reeflo Reef Aquarium Tracker Log water tests in seconds and watch your reef parameters trend over time Reeflo is an iPhone app made by Develak for reef aquarium keepers who want to log water tests, track parameters, and manage maintenance, dosing, and livestock in one place. [Download on the App Store](https://apps.apple.com/us/app/id6777350925) [Support](https://develak.com/apps/reeflo/support/) [Privacy](https://develak.com/apps/reeflo/privacy/) ## What is Reeflo? Reeflo is a focused tracker built for saltwater reef aquariums. Instead of juggling spreadsheets or scattered notes, you log a full water test in under 5 seconds, because Reeflo pre-fills your last values so you only tweak what changed. From there, Reeflo turns your numbers into clean trend charts with target zones, helps you stay on top of maintenance with one-tap routines, and keeps a record of your livestock and dosing so you always know where your tank stands. ### App Store description Reeflo is the focused, beautiful tracker for your saltwater reef aquarium — like Apple Health for your tank. Log a full water test in under 5 seconds. Reeflo pre-fills your last values, so you just tweak what changed and save. Watch your parameters trend over time with clean charts, target zones and out-of-range alerts. - Quick Log: temperature, salinity, pH, alkalinity, calcium, magnesium, nitrate, phosphate and more - Beautiful trend charts with target ranges (7/30/90 days) - Maintenance routines with one-tap completion and reliable reminders - Livestock inventory with photos and growth timelines - Dosing helper for Ca / KH / Mg - Dark-first design made for the reef - Private by design — your data stays on device and syncs via iCloud Reeflo Pro unlocks unlimited tanks, trends, routines, dosing, livestock and export. Keep your corals thriving. Download Reeflo and dial in your reef. Terms of Use: [https://www.apple.com/legal/internet-services/itunes/dev/stdeula/](https://www.apple.com/legal/internet-services/itunes/dev/stdeula/) Privacy Policy: [https://develak.com/privacy-policy/](https://develak.com/privacy-policy/) ### Reeflo at a glance - **Developer**: [Develak](https://develak.com/about/) - **Category**: Lifestyle - **Price**: Free, with optional in-app purchases - **Compatibility**: iPhone and iPad — iOS 17.0 or later - **Languages**: 33 languages (English, French, Spanish and 30 more) - **First released**: June 8, 2026 - **Current version**: 1.0.1 (June 14, 2026) - **Size**: 7.8 MB - **Age rating**: 4+ - **App Store ID**: [id6777350925](https://apps.apple.com/us/app/id6777350925) ## What can you do with Reeflo? Reeflo is an iPhone app to log reef aquarium water tests in seconds, track parameters with trend charts, manage maintenance, dosing, and livestock. ### Quick Log for water tests Log temperature, salinity, pH, alkalinity, calcium, magnesium, nitrate, phosphate, and more in under 5 seconds with pre-filled values. - **Trend charts with target zones**: See how your parameters move over 7, 30, or 90 days and get alerts when a reading falls out of range. - **Maintenance routines**: Set up routines you can complete with one tap and rely on reminders to keep them on schedule. - **Livestock inventory**: Keep a record of your corals and fish with photos and growth timelines. - **Dosing helper**: Get help calculating dosing for calcium, alkalinity, and magnesium. - **Private by design**: Your data stays on your device and syncs across your devices through iCloud. ## Who is Reeflo for? - **Reef aquarium hobbyists**: Anyone maintaining a saltwater reef tank who wants a clear picture of water parameters over time. - **Beginners starting a reef tank**: New reefers who want a simple way to log tests without building their own spreadsheet. - **Multi-tank keepers**: Hobbyists managing more than one tank who want separate tracking for each one with Reeflo Pro. - **Coral growers**: Reefers who want to follow coral growth over time alongside water chemistry. - **Detail-oriented reefers**: Anyone who wants dosing help and out-of-range alerts instead of guessing at parameter trends. ## How does Reeflo work? From “Log your first water test” to “Track livestock and dosing”, in 5 steps. 1. **Log your first water test**: Open Reeflo and enter your readings for temperature, salinity, pH, alkalinity, calcium, magnesium, and more. 2. **Let Reeflo pre-fill your values**: On your next test, Reeflo pre-fills your last values so you only adjust what changed and save. 3. **Check your trend charts**: View how each parameter has moved over 7, 30, or 90 days and see target zones alongside your readings. 4. **Set up maintenance routines**: Create routines you complete with one tap and let reminders keep you on schedule. 5. **Track livestock and dosing**: Add corals and fish with photos and growth timelines, and use the dosing helper for calcium, alkalinity, and magnesium. ## Reeflo, in detail ### How does Reeflo track your reef aquarium parameters? Reeflo is built around the “Quick Log” screen, where you enter readings for temperature, salinity, pH, alkalinity, calcium, magnesium, nitrate, phosphate, and more. Each time you log a test, Reeflo pre-fills your previous values so you only need to adjust the numbers that changed before saving. Once you have a history of tests, Reeflo displays your parameters as trend charts over 7, 30, or 90 days, with target zones shown alongside your actual readings. If a value falls outside its target zone, Reeflo flags it with an out-of-range alert so you can catch drift before it becomes a problem. ### What is included in Reeflo Pro? Reeflo is a free download, and Reeflo Pro is an in-app purchase that unlocks unlimited tanks, trends, routines, dosing, livestock, and export. Without it, you can still use the app’s core features, but Pro removes the limits on how many tanks and how much history you can track. Because Reeflo Pro is a purchase made through the App Store, it is processed by Apple, and you can restore it on a new device by signing in with the same Apple Account. ### How does Reeflo keep your maintenance routines on schedule? Reeflo lets you set up maintenance routines, such as water changes or filter cleaning, that you can complete with a single tap once the task is done. Alongside each routine, Reeflo sends reminders so you know when maintenance is due rather than relying on memory. This keeps recurring reef tasks visible in one place, next to your water test history, livestock inventory, and dosing helper. ## What’s new in Reeflo Version 1.0.1 · Released June 14, 2026 Performance improvements and bug fixes. ## Reeflo: your questions, answered Something else? The [Reeflo support page](https://develak.com/apps/reeflo/support/) covers purchases, sync and settings, and lets you write to us directly. [Reeflo Support](https://develak.com/apps/reeflo/support/): Troubleshooting for purchases, sync and settings, and a direct line to us. [Reeflo Privacy Policy](https://develak.com/apps/reeflo/privacy/): What Reeflo stores, where it is kept, and how to delete it. [Reeflo on the App Store](https://apps.apple.com/us/app/id6777350925): Ratings, reviews and the latest version, on Apple’s store. ### Is Reeflo free? Yes. Reeflo is free to download from the App Store. Optional in-app purchases unlock extra features; they are billed by Apple to your Apple Account, and you can manage them at any time in your account settings. ### Which devices does Reeflo work on? Reeflo works on iPhone and iPad with iOS 17.0 or later. ### How do I log a water test in Reeflo? Open the “Quick Log” screen and enter your readings for parameters like temperature, salinity, pH, alkalinity, calcium, magnesium, nitrate, and phosphate. Reeflo pre-fills your last values, so you only need to change what is different before saving. ### What parameters can Reeflo track? Reeflo tracks temperature, salinity, pH, alkalinity, calcium, magnesium, nitrate, phosphate, and more. ### How do target zones and out-of-range alerts work? Each parameter has a target zone shown on its trend chart. If a logged reading falls outside that zone, Reeflo shows an out-of-range alert so you can notice it quickly. ### Can I view trends over different time periods? Yes. Reeflo shows trend charts for your parameters over 7, 30, or 90 days. ### How do maintenance routines work in Reeflo? You set up routines for recurring tasks and mark them complete with one tap. Reeflo sends reminders so routines stay on schedule. ### Can I keep a livestock inventory in Reeflo? Yes. Reeflo lets you add corals and fish with photos and growth timelines to track how your livestock changes over time. ### What languages is Reeflo available in? Reeflo is available in 33 languages: Arabic, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Slovak, Spanish, Swedish, Thai, Turkish, Ukrainian and Vietnamese. ### How do I get help with Reeflo? Visit the [Reeflo support page](https://develak.com/apps/reeflo/support/): it answers common questions about purchases, sync and settings, and has a contact form. You can also write to [contact@develak.com](mailto:contact@develak.com?subject=Reeflo%20%E2%80%94%20Support%20request). We read every message and reply personally. ## More from Develak in Lifestyle & Hobbies [See all 34 apps](https://develak.com/apps/) - **[Corkwell](https://develak.com/apps/corkwell/)**: Wine Cellar Manager - **[Turfwise](https://develak.com/apps/turfwise/)**: Lawn Care Schedule - **[Cedary](https://develak.com/apps/cedary/)**: Cigar Cellar & Aging - **[Cone6](https://develak.com/apps/cone6/)**: Glaze & Kiln Log ## Want an app like Reeflo? We design and build native iPhone, iPad and Mac apps for founders and companies, with the same care we put into our own. Tell us about your idea. [Start a project](https://develak.com/contact/) [See our services](https://develak.com/services/) --- *Markdown version of for AI assistants, published by Develak. Links lead to the web pages; add .md to a page URL for its Markdown version. Site index: .*