If you're researching how to use the Momcozy M5 Smart, here's what you need to know first: it's the upgraded version of the Momcozy M5. The two pumps share the same core design—same compact wearable body, same Momcozy pump technology, same assembly and cleaning process. What's new with the M5 Smart is Control via Bluetooth app. Everything else you already love about the M5 is still here. Here's a full breakdown of what this pump can do.
Here’s what the M5 Smart offers:
The M5 Smart has 3 pumping modes designed to work with your body at different stages of a session:
Mimics a baby’s initial quick, shallow sucking rhythm to trigger your let-down reflex. Most moms start here at the beginning of a session.
Uses slower, deeper suction to draw out milk once your let-down has started. Switch to this mode when milk begins flowing.
Alternates between stimulation and expression rhythms automatically, for a more natural pumping pattern without manual switching.
Each mode has 9 suction levels. Use the + / − buttons (or the app) to adjust. Start low and increase gradually until you find a level that feels comfortable and productive.
Tip: A higher suction level does not always mean more milk. Always pump at a level that feels comfortable.
The M5 Smart can be used with or without the Momcozy app. The sections below cover both options. But first, before you do anything else, you need to charge the pump and clean all the parts.
Before your first use, fully charge both pump units using the included 5V–1A power adapter. Watch the battery icon on the pump: when it turns into a full, constant solid status, the pump is fully charged.
Important: The M5 Smart does not support use while charging. Always disconnect the charger and close the charging cap before pumping.
Disassemble and clean all milk-contact breast pump parts before the first use and after every session. Here is how:
Remove the flange, milk collector, diaphragm, and duckbill valve from the motor. The motor cannot be washed or submerged in water.
Wash all milk-contact parts before every use and after every use.
Sanitize before the first use and once daily using one of the following methods:
Note: The motor cannot be washed or sanitized. Keep it dry at all times.
Wipe off water or air-dry all parts after washing. Only reassemble once parts have fully cooled and dried.
The M5 Smart has 5 parts: Pump (motor), Diaphragm, Milk Collector, Duckbill Valve, and Flange. Wash your hands before assembling.
1.Snap the diaphragm onto the milk collector.
2.Align the ♥ on the flange with the ♡ on the milk collector.
3.Make sure the flange cut aligns with the milk outlet of the milk collector.
4.Press-seal the flange edge tightly all the way around the milk collector.
5.Snap the milk collector assembly onto the motor tightly.
If you prefer not to use the app, you can operate the M5 Smart entirely using the buttons on the pump—the same experience as the original Momcozy M5. Watch the full assembly and usage tutorial here.
1.Put the assembled breast pump into your bra with the flange side facing your breast.
2.Keep your nipple centered in the flange tunnel. It should not touch the top, sides, or bottom of the tunnel. Lean forward slightly to check alignment.
3.Adjust your bra strap to hold the pump snugly against your breast with no gap.
Tip: Momcoz Pumping Bra is recommended for the best fit.
1.Long-press the On/Off button to turn on the pump.
2.Short-press the Mode button to switch between Stimulation, Expression, and Mixed modes.
3.Use the + / − buttons to increase or decrease suction level (1–9).
4.Short-press the On/Off button at any time to pause or resume.
1.Always turn off the pump before removing it to release the vacuum.
2.Use your finger to gently break the seal between the flange and your breast.
3.Lean slightly forward as you remove the pump to prevent spilling.
4.Disassemble the motor and pour milk from the milk outlet on the flange into a bottle or milk bag.
The pump automatically pauses after 30 minutes of operation. It shuts down automatically after 15 minutes of no activity (including no app activity).
Caution: Do not pump while lying down, charging, or during strenuous activity. If pumping becomes painful, stop immediately, break the seal, and consult a healthcare professional if needed.
Watch the step-by-step app setup video here.
The Momcozy app is available for both iPhone (App Store) and Android (Google Play). Connecting your pump unlocks phone-based control, milk logging, and session stats.
1.Turn on your M5 Smart.
2.Open the Momcozy app and make sure Bluetooth is enabled on your phone.
3.Follow the on-screen steps to connect your pump. You can tap Add Device and select M5 Smart, or scan the QR code on the pump.
4.Once connected, you will see the pump control page.
For the best experience, connect to one phone at a time. To switch phones, disconnect from the current device first, then pair on the new phone.
Tip: Keep your app up to date for the latest features. Tap the ‘Me’ icon → About to check your version. If an update is available, tap Current Version to install it. You can also update via the App Store or Google Play.
After connecting, tap the device card on the app homepage to enter the pump control page. From here you can:
No reaching into your bra, no stopping your session. Just tap, adjust, and keep pumping.
After each session, you can log your milk output directly in the app:
1.When your session ends, tap the milk log prompt in the app.
2.Enter your milk output manually in seconds.
3.Save the entry. The app records time, duration, and volume.
To view your pumping history, go to the Stats page in the app. You can view data by day, week, or month, swipe through your history, spot patterns, and better understand your pumping routine over time.
Finding the right mode and suction level is personal—every mom’s body responds differently. Here are some practical tips:
It typically takes a few sessions to find your personal sweet spot. Give yourself time to experiment.
Getting the right flange size is one of the most important steps for effective, comfortable pumping. The M5 Smart comes with 4 flange sizes: 17 mm, 19 mm, 21 mm, and 24 mm. Additional sizes are available for purchase separately.
To find your fit:
Check the Momcozy breast pump flange sizing guide on their website for detailed measurement instructions.
Good maintenance keeps your pump running well and your milk safe. Beyond daily cleaning, here is what to keep in mind:
You can purchase the Momcozy M5 Smart directly from momcozy.com or through Amazon. It is available in single and double pump configurations, in Cozy Red and Quill Grey. Buying from the official website gives you access to the full product warranty and customer support.
Many U.S. insurance plans cover wearable breast pumps. Check with your insurance provider to find out if the Momcozy M5 Smart qualifies under your plan. Some insurance portals allow you to order directly through a covered supplier.
Inspect all silicone parts regularly and replace any that look cracked, discolored, or deformed. The duckbill valve and diaphragm should be replaced when you notice a drop in suction performance. Replacement parts are available on the Momcozy website.
The M5 Smart is a personal-use wearable breast pump and is not classified as hospital-grade equipment. Hospital-grade (multi-user) breast pumps are multi-user clinical devices. If you have concerns about milk supply or are pumping for a premature baby, speak with a board-certified lactation consultant about whether a hospital-grade pump may be more appropriate for your situation.
Sanitize all milk-contact parts (flange, milk collector, diaphragm, duckbill valve) before the first use and once daily after that. Use boiling water at ≤212°F (100°C) for 5–10 minutes, a steam sterilizer, or a sanitize pot. The motor cannot be washed or sanitized.
A full charge takes approximately 120 minutes (2 hours) using the included 5V–1A power adapter. The pump provides up to 180 minutes of battery life per charge, which is approximately 6 pumping sessions.
The Momcozy M5 Smart is built to make pumping easier—whether you use it with the app or just the buttons on the pump. With the right flange size, a secure fit in your bra, and a comfortable suction level, it can become a natural part of your daily routine. Follow the cleaning and assembly steps each time, keep the app updated if you use it, and give yourself a few sessions to find the settings that work best for you. You’ve got this.
The information provided in this article is for general informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider regarding any medical condition. Momcozy is not responsible for any consequences arising from the use of this content.
