Rheon
FR
Coming soon

A better way to control every drop.

Rheon brings a clear, thoughtful interface to the D-D H2Ocean P1+ dosing pump—whether you are across the room or away from home.

Explore Rheon Compatibility & support
iPhone and iPadiOS 18 or laterCloud and Bluetooth
Rheon device list running on iPhone 17 Rheon device list in dark appearance running on iPhone 17
Made for real aquariums

Everything important, without the clutter.

Run a dose, refine a schedule and understand your pump at a glance. Rheon puts the controls you need where you expect them.

Precise manual dosing

Choose a volume, follow progress live and stop safely whenever you need to.

Clear schedules

View and manage automatic doses in a timeline that is easy to scan.

Useful records

See recent dosing activity and understand how the pump has been working.

Guided calibration

Calibrate with a focused workflow designed around real measurements.

Container awareness

Keep track of remaining liquid and refill your container with confidence.

Backup and restore

Protect your configuration and bring it back when you need it with Rheon Plus.

Your pump, wherever you are.

Sign in with your existing Kamoer account to view status and control the pump through Kamoer’s cloud service.

  • Remote status and control
  • Live updates from your pump
  • Your credentials stay in the system Keychain

Direct, local control.

When you are near the aquarium, Bluetooth mode connects your device directly to the pump without using the internet or Kamoer’s cloud.

  • No internet connection required
  • Nothing leaves your device and pump
  • Ideal for local setup and control
Designed to feel familiar

Complex hardware. Calm software.

Purposeful screens turn dosing data into clear decisions.

Manual dosing

Dose with confidence.

Choose a precise volume, follow progress live and stop safely whenever you need to.

A five millilitre manual dose in progress in RheonA five millilitre manual dose in progress in Rheon, dark appearance
Schedules

See the day before it happens.

Review the next doses, their volumes and timing in one readable timeline.

A daily dosing schedule with morning and evening groups in RheonA daily dosing schedule in Rheon, dark appearance
Records

Understand every millilitre.

Review scheduled and manual doses with a clear visual summary.

Weekly scheduled and manual dosing records in RheonWeekly dosing records in Rheon, dark appearance
Container monitoring

Know what is happening now.

See remaining supply, daily usage, recent activity and device health at a glance.

Alkalinity pump supply and status dashboard in RheonAlkalinity pump status dashboard in Rheon, dark appearance
Calibration

Guided from start to finish.

Prime, dispense, measure and save an accurate flow rate through one focused workflow.

The guided flow calibration workflow in RheonThe guided flow calibration workflow in Rheon, dark appearance
Volume alerts

Know before a container runs dry.

Rheon Plus can notify you when a dosing container reaches the level you choose.

Low and critical container volume alerts configured in RheonContainer volume alerts in Rheon, dark appearance
Backup and restore

Keep every plan within reach.

Save your dosing setup to iCloud and restore it when your configuration changes.

Two restorable dosing-plan backups in RheonDosing-plan backups in Rheon, dark appearance
Widgets

Your pump at a glance.

Check reservoir level, see the next dose and control an active dose from Home Screen.

Rheon Quick Dose and Reservoir widgets on the iPhone Home ScreenRheon Home Screen widgets in dark appearance
Live Activities

Follow a dose without opening the app.

Track an active dose and stop it directly from the Lock Screen.

An active Rheon dose shown as a Lock Screen Live ActivityRheon Lock Screen Live Activity in dark appearance
Made for iPad

More room. Same clarity.

Use Rheon full-screen on iPad to see status, supply and device details together.

Rheon status dashboard running full-screen on a 13-inch iPadRheon iPad status dashboard in dark appearance
Rheon Plus

More ways to stay in control.

A one-time purchase unlocks thoughtful extras across devices using the same Apple ID.

♢

Volume alerts

Get notified before liquid runs low.

↻

Backups

Protect and restore your setup.

▦

Widgets

See pump status from Home Screen.

◉

Live Activities

Follow dosing on the Lock Screen.

⌁

Siri & Shortcuts

Start, repeat or stop with automations.

Rheon droplet icon
Privacy by design

Your aquarium is not an advertising profile.

Rheon contains no advertising, analytics or tracking. Credentials stay in Keychain. Bluetooth control stays local. Optional feedback is sent only when you choose to submit it.

Read the Privacy Policy
Good to know

Frequently asked questions.

Which pump does Rheon support?

Rheon is designed for the D-D H2Ocean P1+ dosing pump, also sold under the Kamoer brand. It does not claim support for other models.

Do I need a Kamoer account?

Cloud mode uses your existing Kamoer account. Bluetooth mode connects locally and does not use Kamoer’s cloud.

Which Apple devices are supported?

Rheon is designed for iPhone and iPad running iOS or iPadOS 18 or later.

Is Rheon affiliated with D-D or Kamoer?

No. Rheon is an independent, unofficial app and is not endorsed by or affiliated with either company.

Coming soon

Built for the aquarium you care about.

Rheon is preparing for release on the App Store.

Check compatibility