You're sitting in the pediatrician's office for your two-week weight check. The doctor looks up from the chart and asks: "How many wet diapers has she had in the last 24 hours?"
If you've been tracking, you pull out your phone and read the number. If you haven't — you guess. And then you spend the next ten minutes wondering if you guessed wrong.
Wet and dirty diaper counts are one of the clearest signs a newborn is getting enough milk. Pediatricians ask about them at every visit in the first weeks. Knowing the answer isn't optional — it's part of keeping your baby healthy.
The good news: logging a diaper takes about two seconds with the right app. The hard part is finding one that doesn't make you want to throw your phone across the room at 4am.
I tested the most popular options and narrowed it down to 7 that are actually worth using.
What to Look for in a Diaper Tracker App
1. Speed Above Everything
You will be logging diapers with one hand while holding a baby with the other. If an app takes more than two taps to record a wet diaper, you will stop using it by week three. Speed is the non-negotiable.
2. Privacy
Diaper logs contain health data about your newborn. Before installing anything, ask:
- Is data stored on my device or uploaded to a server?
- Does this app require an account?
- Does it show ads (which means someone is paying for your data)?
The answer to all three should be in the app's privacy policy. If they don't have one — skip it.
3. Partner Access
If you have a co-parent sharing nights, you both need to see the same log. Otherwise, someone is always texting the other to ask "did you change her? when was the last diaper?" That's a 3am conversation nobody wants to have.
4. Combined Feeding + Diaper Tracking
Your pediatrician doesn't just want to know diaper output — they want the full picture: feedings, diapers, weight trend. An app that tracks both in one place is worth ten times more than two separate apps.
#1. Mommy's Log — Best for Speed, Privacy & Simplicity
⭐⭐⭐⭐⭐ Rating: 4.9/5
Price: 100% Free, No Ads Best For: Parents who want fast, private, no-nonsense tracking
What Makes It Stand Out
Privacy-First Design:
- All data stays on YOUR device — nothing is uploaded
- No account required, ever
- No ads, no data collection, no third-party access
- You can delete everything instantly, locally
This is the only app I tested that doesn't require you to hand your baby's health data to a server somewhere. In an era where every free app is monetizing something, that matters.
Features
Diaper Tracking:
- Wet, dirty, or both — one tap
- Timestamped automatically
- Notes field for anything unusual
- Full history by day
Feeding Tracking (bonus):
- Breastfeeding with side tracking and live timer
- Bottle and formula logging with amounts
- Automatically suggests which side to use next
History & Export:
- View the last 24 hours, 7 days, or full history at a glance
- Export to CSV for doctor visits
- Text summary you can screenshot and share
Partner Sync:
- Real-time shared log with your co-parent — no more "did you change her?" at 2am
- Available as a premium add-on, genuinely worth it
Pros
- ✓ Genuinely free, no trial period
- ✓ No ads, no subscription required for core features
- ✓ Tracks diapers AND feedings in one place
- ✓ Partner Sync so both parents see the same data
- ✓ On-device privacy — your data stays yours
- ✓ Fast enough to log while half-asleep
Cons
- ✗ iOS only (no Android yet)
- ✗ No cloud backup by design — if you lose your phone before exporting, logs go with it
- ✗ Doesn't track sleep or growth milestones
Who It's For:
Privacy-conscious parents, breastfeeding moms, anyone who hates subscriptions, and co-parents who need a shared log without setting up a shared account.
Editor's Pick: Mommy's Log is our top pick for the same reason it wins on feeding tracking — it does the important things fast and privately, without making you pay for the basics. Download free on the App Store →
It also tracks feedings — see how it ranked in our feeding tracker roundup →
#2. Huckleberry — Best All-in-One Option
⭐⭐⭐⭐½ Rating: 4.5/5
Price: Free tier available, premium plan ~$9.99/month
Huckleberry is one of the most popular baby tracking apps and for good reason — it covers diapers, feeding, sleep, and growth all in one place. The interface is clean and the free tier is genuinely usable.
The catch: the features you actually want (like SweetSpot sleep prediction and detailed reports) are behind the paywall. For diaper tracking specifically, the free version works fine. Just know that the $10/month ask will come eventually.
Best for: Parents who want to track everything in one app and don't mind paying for full access.
#3. Baby Tracker — Newborn Log
⭐⭐⭐⭐ Rating: 4.2/5
Price: Free with ads, $4.99 to remove ads
One of the original baby logging apps — available on both iOS and Android, which is its biggest advantage. The UI feels older but it's reliable, and the cross-platform support is rare in this category.
Cloud sync is available but requires an account. Logging speed is decent but requires more taps than ideal for middle-of-the-night use.
Best for: Android users, or families where one parent has iPhone and the other has Android.
#4. Glow Baby
⭐⭐⭐⭐ Rating: 4.1/5
Price: Free, with optional premium upgrade
Glow Baby has a genuinely nice design and includes a community forum where you can ask questions and compare notes with other parents going through the same phase. Diaper and feeding logging both work well.
Privacy note: Glow is ad-supported on the free tier and does use anonymized data. If that's a dealbreaker, stick with Mommy's Log.
Best for: Parents who want community features alongside tracking.
#5. Sprout Baby
⭐⭐⭐⭐ Rating: 4.0/5
Price: ~$4.99 one-time purchase (no subscription)
Sprout is a one-time purchase with no ongoing subscription — a nice model if you're allergic to monthly fees. Solid tracking for diapers, feeding, and sleep. The interface is clean and the data export is good.
The downside: it feels less actively maintained than the top picks, and the one-time price means no ongoing revenue for the developer to improve it.
Best for: Parents who want to pay once and be done with it.
#6. Nara Baby
⭐⭐⭐½ Rating: 3.8/5
Price: Free with premium tier
Nara Baby is a newer entry with a modern design. It covers the basics — diapers, feeding, sleep — and has a pleasant interface. It's improving quickly, but doesn't yet match the reliability of more established apps for new parents who need it to work perfectly every time.
Best for: Parents who want something that feels current and are okay being early adopters.
#7. Notes App / Paper Log
⭐⭐⭐ Rating: 3.2/5
Price: Free (comes with your phone)
Yes, a notes app. Before you dismiss this — it works. A timestamped note that says "10:42am - wet" is technically a diaper log. It's private by default, requires no download, and has zero learning curve.
The problems: no reminders, no summary view, no partner sync unless you share a note (which works but is clunky), and you'll spend time squinting at timestamps when your pediatrician asks for a 24-hour count.
Best for: Parents who just need something right now and haven't decided on an app yet. Upgrade before week three.
Common Diaper Questions (With Answers That Actually Help)
How many diapers should a newborn have per day?
The general benchmark most pediatricians use:
- Day 1–2: 1–2 wet diapers (colostrum is small volume)
- Day 3–4: 3–4 wet diapers as milk comes in
- Day 5+: 6+ wet diapers per day, 3–4 dirty
These numbers are what your doctor is checking against at weight visits. Having a log means you have a real answer, not an estimate.
When do the dirty diapers change?
Around 6 weeks, many breastfed babies shift from several dirty diapers per day to one every few days — or even less. This is normal and catches parents completely off guard. If you've been tracking, you'll notice the change clearly in your history instead of wondering if something is wrong.
How long do I need to track diapers?
Most parents track diaper output closely for the first 4–6 weeks, then scale back as feeding is established and weight gain is consistent. Some keep logging casually for a few months. The app doesn't expire — use it as long as it's useful.
Do I have to log every single one?
No. An 80% complete log is infinitely more useful than no log. If you miss one during a nap or forget to log at night, skip it and pick back up on the next one. The patterns still emerge.
Privacy Warning: Not All Free Apps Are Actually Free
⚠️ If an app is free and has no premium tier, ask yourself how it makes money.
Many baby tracking apps earn revenue by:
- Selling anonymized (but still sensitive) health data to advertisers
- Serving targeted ads based on your baby's patterns
- Partnering with formula or baby gear brands
Your newborn's health data is not something most parents think to protect — which is exactly what makes it valuable to the apps that collect it.
Before installing any app, scroll to the bottom of its App Store listing and tap Privacy Nutrition Label. If it says "Data Used to Track You" or "Data Linked to You" — that app is monetizing your information.
Mommy's Log shows "Data Not Collected" because the data never leaves your phone.
Final Verdict
For most parents, the answer is Mommy's Log: free, fast, private, and it tracks both diapers and feedings so you're not managing two separate apps. Partner Sync means both of you stay in the loop without a shared account.
If you need Android support, Baby Tracker — Newborn Log is the most reliable cross-platform option.
If you want the kitchen-sink all-in-one, Huckleberry is worth paying for.
For everything else — start with Mommy's Log and switch later if you need more.
The best diaper tracker is the one you'll actually open at 4am. Start simple.
Download Mommy's Log free on the App Store →
Disclaimer: This article is for informational purposes only and does not replace medical advice. If you have concerns about your newborn's diaper output or health, please consult your pediatrician.
