Milestones are a feature introduced in The Sims 4: Growing Together. They function similarly to the memories from The Sims 2 and The Sims 3.

Milestones are a collection of icons that describe the major events that happened in a Sim's life such as falling in love, having a baby, getting a job, etc. Milestones are stored in a panel in the Sim's Simology tab beneath traits and above likes and dislikes.

Categories

Each life stage and life state has its own set of unique milestones, and they are split to seven categories: Cognitive Milestones, Fine Motor Milestones, Firsts Milestones, Gross Motor Milestones, Life Milestones, Motor Milestones and Social Milestones.

Infant Only Milestones

Fine Motor Milestones

Fine Motor Milestones capture an infant's progress in developing their smaller muscles for precision and control. These can only be unlocked when the Sim is an Infant. Achieving the more advanced Fine Motor Milestones will give the Infant a boost as they age up to a Toddler by getting a head start on their thinking skill.

Gross Motor Milestones

Gross Motor Milestones capture an Infant's progress in developing whole body movement for strength and coordination. These can only be unlocked when the Sim is an Infant. Achieving the more advanced Gross Motor Milestones will give the Infant a boost as they age up to a Toddler by getting a head start on their movement skill.

Toddler Only Milestones

Cognitive Milestones

Cognitive Milestones capture a Toddler's steps in developing the Thinking and Imagination skills

Motor Milestones

Motor Milestones capture a Toddler's steps in developing the Movement Skill.

All Age Group Milestones

Firsts Milestones

Firsts Milestones capture the first instances of major moments in a Sim's life.

Life Milestones

Life Milestones capture key moments across a Sim's life.

Social Milestones

Social Milestones capture verbal communication and relationship-based moments across a Sim's life. For infants, achieving more Social Milestones will give them a boost as they as age up to a toddler by getting a head start on their communication skill.

List of Milestones

Infant and up

As Infants are at their most important stage when it comes to growth and development, Milestones in this age group are predominantly focused on developing motor skills and plenty of Firsts.

Icon	Milestone	Description	Age	Pack
Fine Motor
	Learned to Reach	Work those tiny muscles! <Sim name> reached their arm out.		&EP13
	Learned to Grab	Who knew tiny hands could be this strong? <Sim name> used their hands to grab with all their might!		&EP13
	Put Toe In Mouth	<Sim name> is getting stronger every day. What a momentous occasion when they can wiggle around, bend over, and even stick their toe in their mouth. How flexible!		&EP13
	Learned Pincer Grasp	<Sim name>'s powerful fingers are now able to perform the Pincer Grasp! Nothing will escape from their fingers unless they will it!		&EP13
	Learned to Clap	<Sim name> made their first sounds with their hands!		&EP13
	Learned to Wave	Sul Sul! <Sim name> learned a new way to say hello by waving their hand!		&EP13
Firsts
	Slept Through the Night	Ah, the sweet sound of silence. Those living with <Sim name> will never forget the first time they finally slept a full rest without interruption.		&EP13
	First Bath	<Sim name> was squeaky clean after receiving their first ever bath.		&EP13
	First Bubble Bath	Bubbles bubbles bubbles! <Sim name> loved their very first bubble bath!		&EP13
	First Baby Food	Mmm, yummy! <Sim name> had their very first baby food.		&EP13
	First Finger Food	<Sim name> managed to pick up and eat food all by themself.		&EP13
	First Trip to a Park	The world got a little bigger for <Sim name> when they visited a park for the first time!		&EP13
	First Vacation	The sights, sounds, and smells of a new place mesmerized <Sim name> on their very first vacation.		&EP13
	First Visit to a Family Member's Home	<Sim name> went on a trip to visit their relatives.		&EP13
	First Visitors	A new face! <Sim name> had their first encounter meeting someone from outside their household.		&EP13
	First Diaper Blowout	<Sim name> experienced their first diaper blowout. That foul stench won't be forgotten by those who were unfortunately present.		&EP13
	Peed on Caregiver	<Sim name> will never know it happened, but others will surely remember the first time they peed on someone during a diaper change.		&EP13
	First Funeral	<Sim name> attended their first Funeral.		&EP17
	First Loss	<Sim name> lost someone close to them for the first time.		&EP17
	Survived Seven Nights in a Haunted House	The paranormal was no match for <Sim name>!		&SP18
	First Burglar Visit	<Sim name> experienced a burglary at <lot name>.		&EP13
Gross Motor
	Lifted Head	<Sim name> developed the ability to lift their head all on their own. There's a whole world to look at!		&EP13
	Rolled Over to Back	A bad move for a turtle, but a great move for an Infant... <Sim name> rolled themself onto their back!		&EP13
	Rolled Over to Tummy	<Sim name> mastered the ability to roll from their back to tummy and back again! It's a critical step to help them orient themself within their world.		&EP13
	Learned to Creep	There's nothing creepy about an Infant that's creeping! Using their newfound strength and coordination, <Sim name> pushed themself up off the floor to creep about.		&EP13
	Learned to Sit Up	Having learned how to support themself by sitting up, <Sim name> is just an awkward butt scoot away from getting their grubby little hands on nearby objects.		&EP13
	Learned to Crawl	Watch out world, <Sim name> is on the loose! Having learned to crawl, there's no shortage of mischief they'll be able to get up to.		&EP13
	Pulled to Stand	Despite literally learning to stand on their own two feet, <Sim name> will still need care and guidance for some time to come. In the meantime, look how tall <Sim name> has grown!		&EP13
	Learned to Dance	Wave those hands! <Sim name> learned to dance. Once they become a toddler, they'll be able to use their feet to tap to the beat!		&EP13
Life
	Born	Every journey has a first step; let's welcome <Sim name> into the world!		&EP13
	Born at a Hospital	Every journey has a first step; let's welcome <Sim name> into the world!		&EP01
	Born at Home	Every journey has a first step; let's welcome <Sim name> into the world!		&EP13
	Adopted	<Sim name> was adopted. Welcome to the family!		&EP13
	Adopted Pet	A new friend joined the family.		&EP04
	Rebirth!	<Sim name> has been reborn into a new life!		&EP17
	Joined a Dynasty	<Sim name> joined the <Dynasty> dynasty.		&EP21
	Left a Dynasty	<Sim name> left the <Dynasty> Dynasty.		&EP21
	Kicked Out of Dynasty	<Sim name> was kicked out from the <Dynasty> Dynasty.		&EP21
Social
	First Smiled	The world just got a bit brighter with <Sim name>'s very first smile!		&EP13
	Learned to Coo	<Sim name> started making the most adorable cooing sounds!		&EP13
	Learned to Laugh	Eyes sparkling with joy, <Sim name> laughed at something funny!		&EP13
	Learned to Blow Raspberry	With an adorably tiny sputter, <Sim name> attempted to communicate by blowing a raspberry.		&EP13
	Learned to Babble	<Sim name> learned to happily babble away at the world around them. What will their first word be...?		&EP13
	Learned to Blow Kiss	Aww, <Sim name> showed their love by blowing kisses!		&EP13
	Learned Peek-A-Boo	<Sim name> played their first game of Peek-A-Boo... And would you believe it, <Sim name> won!		&EP13
	Said First Word	<Sim name> uttered their very first word! Write that down!		&EP13

Toddler and up

Similarly to Infants, Toddlers have access to unique Milestones, mostly focused on further development and growth, such as walking or talking.

Icon	Milestone	Description	Age	Pack
Cognitive
	Studied Letters	<Sim name>'s world expanded to include the realm of written language.		&EP13
	Studied Numbers	One, two, three... <Sim name>'s counting prowess is limitless.		&EP13
	Studied Shapes	Circle, triangle, square... <Sim name>'s genius knows no bounds!		&EP13
	Asked 'Why?' for the First Time	<Sim name> started asking one of life's important questions.		&EP13
	Art Appreciation	Now able to view art, <Sim name> has quite the discerning eye for a Toddler.		&EP13
	Maxed Imagination Skill	<Sim name> maxed the Imagination Skill!		&EP13
	Maxed Thinking Skill	<Sim name> maxed the Thinking Skill!		&EP13
Firsts
	First Time at Daycare	<Sim name> went to daycare for the first time.		&EP13
	Read First Book	<Sim name> read a book all by themself for the first time!		&EP13
	Mastered Potty Training	<Sim name> learned the ways of the loo.		&EP13
	First Nightmare	Life's not all fun and games, not even when <Sim name> is asleep. Scary stuff!		&EP13
	Threw a Tantrum	Their frustration reached its boiling point! <Sim name> threw a tantrum.		&EP13
Life
	Celebrated a Birthday	<Sim name> celebrated a birthday!		&EP13
	Got Evicted	<Sim name> got served with an Eviction Notice!		&EP15
Motor
	Learned to Walk	Oh, the places <Sim name> will go!		&EP13
	Learned to Climb Stairs	<Sim name> can now reach new heights, literally.		&EP13
	Learned to Dance	Those hips don't lie, <Sim name> can't stop shaking to the beat and learned how to dance!		&EP13
	Learned to Run	Zoom, zoom! <Sim name> learned to run.		&EP13
	Maxed Movement Skill	<Sim name> maxed the Movement Skill!		&EP13
Social
	Learned to Talk	No longer limited to babbling with the occasional word interspersed, <Sim name> learned to talk!		&EP13
	Played with Others	<Sim name> played with others for the first time.		&EP13
	First Childhood Friend	<Sim name> made a friend outside the family!		&EP13
	Maxed Communication Skill	<Sim name> maxed the Communication Skill!		&EP13

Child, Teen, and up

Milestones in the Child and Teen category are extremely varied, as they are the ones that feature either one-and-done experiences exclusive to Child or Teen Sims, or ones that can be achieved by Teen Sims and up only.

Icon	Milestone	Description	Age	Pack
Firsts
	First Day of School	<Sim name> had their first day of grade school.		&EP13
	First Object Possession	<Sim name> completed their first ghostly possession of an object!		&EP17
	First Marbles Win	The path to being a champion is paved with wins, and <Sim name> is well on their way!		&EP15
	First Hopscotch Win	<Sim name> hopped to the top!		&EP15
	Lost First Tooth	Where did <Sim name>'s tooth go?		&EP13
	Learned to Ride a Bike	<Sim name> learned how to ride a bike! Look at them go.		&EP13
	First Mold Exposure	Yuck! <Sim name> found mold growing at <lot name> and got sick.		&EP15
	First Energy Failure	<Sim name> passed out from exhaustion for the first time.		&EP13
	First Bladder Failure	<Sim name> suffered a great embarrassment.		&EP13
	First Fight	Catch these hands! <Sim name> got into a fight.		&EP13
	First Fire	<Sim name> experienced their first fire.		&EP13
	First WooHoo	<Sim name>'s first WooHoo partner was <Sim 2 name>		&EP13
	First Time Burning Out	<Sim name> experienced burnout for the first time. Take a break!		&EP13
	Eaten by Cowplant	That was a close call just for some cake! <Sim name> saw the insides of a Cowplant.		&EP13
	First Swordsmanship Duel Win	<Sim name> experienced the first of what's sure to be many victories!		&EP13
	First Swordsmanship Tournament Win	<Sim name> proved themselves a master of the blade.		&EP13
	Found the Forgotten Grotto	<Sim name> visited the beautiful Forgotten Grotto for the first time.		&EP13
	Found the Sylvan Glade	<Sim name> visited the enchanting Sylvan Glade for the first time.		&EP13
	Found the Hermit of Granite Falls	<Sim name> found the Hermit of Granite Falls for the first time.		&GP01
	Explored Sixam	<Sim name> made it to the curious world of Sixam. What a feat!		&EP01
	Explored Deep into the Omiscan Temple	<Sim name> found the ultimate treasure of an Omiscan Temple in Selvadorada.		&GP06
	Gave First Tattoo	<Sim name> gave someone a tattoo for the first time!		&EP18
	Got First Tattoo	<Sim name> got their first tattoo.		&EP18
	Achieved Maximum Romantic Satisfaction	<Sim name> reached Maximum Romantic Satisfaction.		&EP16
	Achieved Minimum Romantic Satisfaction	<Sim name> reached Minimum Romantic Satisfaction.		&EP16
	Defeated the Mother Plant	<Sim name>'s a hero of Strangerville!		&GP07
	Experienced the Call of the Mother	ŦĦ€ ΜØŦĦ€Ř ĆΔŁŁ€Đ ŦĦ€ ΜØŦĦ€Ř ĆΔŁŁ€Đ ŦĦ€ ΜØŦĦ€Ř ĆΔŁŁ€Đ		&GP07
	First Break-In Committed	What a rush! <Sim name> broke into <lot name> to snoop around.		&EP15
	Reached the Peak of Stardom	<Sim name> became a five-star celebrity!		&EP06
	Reached Mount Komorebi Summit	A pinnacle of achievement! <Sim name> reached the top of Mount Komorebi.		&EP10
	Crumplebottomed!	Can you ever really forget the first time that purse hits you?		&EP11
	Finchwick Fair Winner	Winner winner chicken dinner! <Sim name> won a Finchwick Fair competition.		&EP11
	Beat Greg in a Fight	The first time <Sim name> showed Greg what's what.		&GP12
	Won First Horse Competition	<Sim name> won their first Horse Competition.		&EP14
	Placed in the Ultimate Horse Championship	Hold your horses, <Sim name> placed in the Ultimate Horse Championship! Not just any Horse and rider duo can do that.		&EP14
	First Mark of Edith!	<Sim name> was awarded the Mark of Edith!		&EP17
	First Scandal	<Sim name> was embroiled their first scandal!		&EP13
Life
	Childhood Phase	<Sim name> had a <phase name> phase.		&GP05
	Made a Friend in the Crypt!	While exploring the Crypt, <Sim name>, made a new friend! Although the friend is a bit strange...		&EP17
	Unlocked The Ultimate Evil Ghost Power!	<Sim name> unlocked their ultimate evil Ghost Power!		&EP17
	Unlocked The Ultimate Good Ghost Power!	<Sim name> unlocked their ultimate good Ghost Power!		&EP17
	Abducted by Aliens	Aliens hovering over <lot name> decided to give <Sim name> an out of this world experience, literally.		&EP01
	Sold a Small Business	<Sim name> sold their Small Business named <Small business name>.		&EP18
	First Small Business Simoleon	<Sim name> earned their first Simoleon at <Small business name>!		&EP18
	Registered a Small Business	<Sim name> registered a new Small Business named <Small business name>.		&EP18
	Achieved a Pristine Reputation	<Sim name>'s a paragon of virtue.		&EP06
	Achieved an Atrocious Reputation	<Sim name>'s officially the worst of the worst.		&EP06
	Adopted a Tiger	<Sim name> sponsored a tiger at the Sulea Tiger Sanctuary in Tomarang.		&EP15
	Got a Horse	A new Horse joined the family.		&EP14
	Witnessed the Birth of a Foal	<Sim name> was filled with joy when a foal was born!		&EP14
	Enjoyed Too Much Nectar	<Sim name> had a bit too much Nectar and paid the price.		&EP14
	Expelled from High School	<Sim name> was expelled from High School.		&EP12
	Graduated from High School	Time to celebrate! <Sim name> graduated from High School.		&EP12
	Dropped Out of High School	<Sim name> dropped out of High School.		&EP12
	Prom Royalty	<Sim name> won the crown at prom!		&EP12
	Began Puberty	<Sim name> started puberty. Everyone goes through it!		&EP12
	Earned Degree	<Sim name> studied hard and earned their degree!		&EP08
	Reached Top of After School Activity	<Sim name> became <level> in the <activity>.		&EP05 &EP06 &EP12
	Worthy of Simcalibur	<Sim name> pulled Simcalibur from the stone!		&EP21
	Founded a Dynasty	<Sim name> founded the <dynasty name> Dynasty.		&EP21
	Became Head of Dynasty	<Sim name> became the <dynasty> Dynasty head. <Sim name> demanded to lead the <dynasty> Dynasty and was rewarded. <Sim name> proved themselves worthy of the <dynasty> Dynasty through chess. <Sim name> proved themselves worthy of the <dynasty> Dynasty through a sword duel. <Sim name> proved themselves worthy of the <dynasty> Dynasty through brute strength.		&EP21
	Stepped Down as Dynasty Head	<Sim name> gave way to the new guard of <dynasty>.		&EP21
	Usurped as Head of Dynasty	<Sim name> gave way to the new guard of <dynasty>.		&EP21
	Became Dynasty Heir	The <dynasty> Dynasty's future rests on <Sim name>'s shoulders.		&EP21
	Stopped Being Dynasty Heir	<Sim name> was removed as heir from the <dynasty>'s Dynasty.		&EP21
	Became Dynasty Outcast	<Sim name> was declared an Outcast from <dynasty>.		&EP21
	Restored Status in Dynasty	<Sim name> was freed from the label of <dynasty>'s Outcast.		&EP21
	Got a Job	<Sim name> started as <level> in the <career> Career.		&EP13
	First Promotion	<Sim name> was promoted to <level> in the <career> Career.		&EP13
	Reached the Top of Career	<Sim name> was promoted to <level> in the <career> Career.		&EP13
	Quit	<Sim name> quit the <career> Career.		&EP13
	Got Fired	<Sim name> was fired from the <career> Career.		&EP13
	Struck by Lightning	<Sim name> didn't heed the weather in <lot name>		&EP05
	Became a Plant Sim	<Sim name> experienced the botanical side of life.		&EP13
	Manifested as a Mermaid	How mermazing! <Sim name> manifested as a Mermaid.		&EP07
	Manifested as a Spellcaster	Making magic happen! <Sim name> manifested as a Spellcaster.		&GP08
	Manifested as a Vampire	A life of immortality calls. <Sim name> manifested as a Vampire!		&GP04
	Manifested as a Werewolf	Awooo! <Sim name> manifested as a werewolf.		&GP12
	Manifested as a Fairy	<Sim name> manifested as a Fairy!		&EP19
	Became Leader of the Moonwood Collective/Wildfangs	<Sim name> climbed their way to the top of the pack.		&GP12
	Became Non-Occult	<Sim name> said goodbye to the occult.		&EP07 &GP08 &GP04 &GP12 &EP19
	Died	What a way to go: (cause of death).		&EP13
Social
	Made a Best Friend	<Sim 1 name> and <Sim 2 name> became Best Friends.		&EP13
	Made an Enemy	<Sim 1 name> and <Sim 2 name> became enemies.		&EP13
	Fell in Love	<Sim 1 name> fell in love with <Sim 2 name>.		&EP13
	Started a Romantic Relationship	<Sim 1 name> and <Sim 2 name> started a romantic relationship.		&EP13
	Ended a Romantic Relationship	Not everything works out. <Sim 1 name> and <Sim 2 name> ended their romantic relationship.		&EP13
	Caught Partner Cheating	<Sim 1 name> caught <Sim 2 name> cheating on them.		&EP13
	Caught Cheating	Yikes. <Sim 2 name> caught <Sim 1 name> cheating on them.		&EP13
	Resurrected Another Sim	<Sim 1 name> brought <Sim 2 name> back to life!		&EP13
	Saved from Death	<Sim 2 name> saved <Sim 1 name> from the Grim Reaper.		&EP13

Young Adult, Adult, Elder

While most of the Milestones a Young Adult/Adult/Elder Sim has access to can be achieved as early as in their Teens, this last age group does have some Milestones and experiences unique to them.

Icon	Milestone	Description	Age	Pack
Life
	Finished Bucket List!	<Sim name> finished their Bucket List!		&EP17
	Finished Unfinished Business!	<Sim name> finished their Unfinished Business!		&EP17
	Had a Descendant of Grim!	<Sim name> gave birth to a descendant of the Grim Reaper!		&EP17
	Adopted a New Family Member	<Sim name> joined the family!		&EP13
	Had a Baby	<Sim name> joined the family!		&EP13
	Got Laid Off	<Sim name> lost their job.		&EP13
	Had a Mid-Life Crisis	<Sim name>'s desire to be more creative/for adventure/for stronger social connections/for greater success led them through a life changing experience.		&EP13
	Made a Self Discovery	<Sim name> discovered their new trait: <Trait>		&EP13
	Won the Lottery	<Sim name> won the big bucks.		&EP05
	Retired	<Sim name> retired from their career.		&EP13
Social
	WooHoo'd with Grim!	<Sim name> WooHoo'd with the Grim Reaper. This is an interesting choice, but good for them!		&EP17
	Kissed a Noble Frog	<Sim name> kissed a Frog that turned into a Sim!		&EP13
	Got Engaged	<Sim 1 name> got engaged to <Sim 2 name>.		&EP13
	Got Married	<Sim 1 name> got married to <Sim 2 name>.		&EP13
	Had an Affair	<Sim 1 name> had an affair with <Sim 2 name>.		&EP13
	Proposal Rejected	Ouch. It didn't go the way <Sim 1 name> imagined. <Sim 2 name> rejected their proposal.		&EP13
	Widowed	Few things are sadder than when spouses are separated by death.		&EP13