Comparison

CDC's Milestone Tracker vs Oli Aquatics

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CDC's Milestone Tracker

Monitor your child's developmental progress from 2 months to 5 years with interactive checklists. Includes tips, videos, and guidance on when to seek professional advice. Easily share milestone summaries with healthcare providers.

Highlights
  • Add multiple children
  • Interactive milestone checklists
  • Milestone photos and videos
  • Developmental tips and activities
  • Guidance on early developmental concerns
  • Track doctor's appointments
  • Share milestone summaries
Features
Read full description

Milestones matter! Track your child’s milestones from age 2 months to 5 years with CDC’s easy-to-use checklists; get tips from CDC to support your child’s development; and find out what to do if you ever have concerns about your child's development. From birth to age 5, your child should reach milestones in how he or she plays, learns, speaks, acts and moves. Photos and videos in this app illustrate each milestone and make tracking them for your child easy and fun! Spanish photos and videos are coming soon! Features: • Add a Child – enter personalized information about your child or multiple children • Milestone Tracker – track your child’s development by looking for important milestones using an interactive checklist • Milestone Photos and Videos – know what each milestone looks like so that you can better identify them in your own child. • Tips and Activities – support your child’s development at every age • When to Act Early – know when it’s time to “act early” and talk with your child’s doctor about developmental concerns • Appointments – keep track of your child’s doctors’ appointments and get reminders about recommended developmental screenings • Milestone Summary – get a summary of your child’s milestones to view, and share with or email to your child’s doctor and other important care providers For more information and free tools to help you track your child’s milestones, visit www.cdc.gov/ActEarly. *This milestone checklist is not a substitute for a standardized, validated developmental screening tool. These developmental milestones show what most children (75% or more) can do by each age. Subject matter experts selected these milestones based on available data and expert consensus. CDC does not collect or share any personal information that can be used to identify you or your child.

About

Oli Aquatics

Features
Read full description

Oli Aquatics, formerly Jim Booth Swim School, is proud to continue serving local families with warm, welcoming swim instruction centered on safety, confidence, and care. Our app makes it easy to find and enroll in lessons, manage schedules, payments, view attendance, skill progress, and stay connected with important updates. Wherever your family is in its swimming journey, our team is here to support each swimmer with patience, encouragement, and expert instruction.

Screenshots

CDC's Milestone Tracker4 screens
Oli Aquatics4 screens

Verdict

The call

The clearest difference is update cadence: Oli Aquatics at fortnightly against CDC's Milestone Tracker's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CDC's Milestone Tracker ships an update every 6 months, Oli Aquatics fortnightly. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 9 level
CDC's Milestone Tracker versus Oli Aquatics: the parameters behind the verdict, then further details
ParameterCDC's Milestone TrackerOli Aquatics
PriceFreeFree
Rating4.9 (10K ratings) — better—
Positive reviews61.7% of reviews—
Number of ratings10K — better—
Update frequencyEvery 6 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.1
Further details — not scored
Size61 MB60 MB
Age rating4+4+
DeveloperCenters For Disease Control and PreventioniClassPro Inc

Bugs and requests

CDC's Milestone Tracker

Reported bugs

4 issues
  • Incorrect age display for children
  • Milestone checklist reset after app updates
  • Reference videos not working as expected
  • Inability to input child's exact age or prematurity details

Requested features

5 requests
  • Ability to sync data between multiple devices
  • Option to track milestones beyond early childhood
  • Integration with other child health and development apps
  • More customization options for milestone tracking
  • Improved data visualization and reporting

Oli Aquatics

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

CDC's Milestone Tracker

No in-app purchases

None

Oli Aquatics

No in-app purchases

Questions

Is CDC's Milestone Tracker free?
CDC's Milestone Tracker is free to download, with no in-app purchases.
Is Oli Aquatics free?
Oli Aquatics is free to download, with no in-app purchases.
Do CDC's Milestone Tracker or Oli Aquatics have ads?
Neither CDC's Milestone Tracker nor Oli Aquatics shows ads.
Which is updated more often, CDC's Milestone Tracker or Oli Aquatics?
CDC's Milestone Tracker ships an update every 6 months, and Oli Aquatics fortnightly. Most recently, CDC's Milestone Tracker was updated on October 17, 2026 and Oli Aquatics on October 11, 2026.

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