Last updated on December 10th, 2025 at 02:57 pm
Kotodama Diary – Simulation Game Review
Kotodama Diary is a Simulation/Casual game from Polaris-x Inc, first launched in 10th December 2020.
It’s rated 4+ and currently has 3,054+ ratings on the App Store.
What Makes Kotodama Diary Stand Out
"Are you looking for a cute pet? Too bad!
Kotadama Diary's characters evolve depending on the words which you feed them, and could even grow up into something… unexpected.
Weird characters, happy characters, sad characters, lovely characters, rude characters, and even, yes, simply cute characters—There's something for everyone!
Can you feed them the right words to make them evolve into a new species? Try your best while you decorate your room with your favorite furniture. And you don't even need to clean up!
Kotodama Diary is a simple, entertaining game that lets you have fun with bizarre characters that evolve depending on your choices!
There are more than 100 different species of these weird characters, known as the ""kotodummies"".
And, maybe, you'll find that the words you chose tell you something about yourself…
●○ How to play ○●
- Touch or swipe on the hearts to collect them
- When you have enough hearts, words will appear
- Choose one of the words
- Depending on which word you chose, the kotodummy will evolve
- Use gems or tickets to draw fortunes and get accessories
- The kotodummies will wear the accessories you give them, and, if they like them, they'll give you useful items in return
- The kotodummies will collect coins which you can use to buy furniture
- Furniture helps you progress through the game faster
Decorate your room, play with your favorite kotodummies, and create your very own Kotodama Diary!
●○●You'll like this game if●○●
- You like slow-paced, relaxing games
- You want to pass some time for free
- You want more than just cutesy characters
- You want to speak with your pets
- You want some absurd screenshots to share
- You like pixel art
- You like rolling those sweet gachas
- You love putting accessories on things/people/animals
- You enjoy the occasional weird character
- You could do with some giggles
- You like bringin up virtual characters
- You want to decorate your room
- You like collecting things
- You want some very unique ""pets"""
This Simulation game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, Kotodama Diary is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 3rd December 2025
Recent improvements include:
Bug Fix
Download & Availability
Kotodama Diary is available through the official App Store for iOS devices.
Get Kotodama Diary on App Store
Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.
Compatible with iPhone and iPad devices.
Player Experience Highlights
Community Insight:
This game is SO cut and fun, we just started playing but Im already addicted.
We can never find a game that we really like or actually enjoy but this is so much fun!! If you like cute pixelated animals this is the one for you.
Great job on this game guys. Its our favorite!! We love our kotodummies so much.
We this game it is cute and funny. Our favorite kotodummy is pupcaso, cuz we love drawing!! There is one thing that we don't like though. That thing is ads. The developers don't have to get rid of ads, but it annoys us that when we evolve our kotodummy and a ad starts, when it ends our heart meter is empty and our kotodummy isn't evolved!! Besides that we love love love the game! Keep making wonderful things.
We really adore this game! But there is this one ad that breaks it. The ad is the one with the mom with the green hair, with two freezing children with red hair on the street. When we played this ad to open up a present, it glitched out on us and said we didnt receive the award. Also, immediately after the ad played, the screen became frozen and we couldnt touch anything. Please remove this ad. We would make our day.
We love this game so much! But pls developers READ THIS PLS MAKE IT EASIER TO GET GEMS.
Please make it so passwords you need to unlock through fortunes changed so they can be unlocked through errands as well.
We WAS LOOKING FOR APP AND we FOUND AFTER 2 YEARS OMG BTW BEST GAME EVER.
This game is the actual best and we play it 24/7.
We've just started playing, but we can already tell we're gonna have a good time. 10/10.
We never write reviews but Ive been absolutely obsessed with this game since downloading it! Its super cute, and we love how its reminiscent of tamagotchi but still feels so original. Its not pay to play, you can get on just fine without spending any money which we love, and the number of possible pets to get makes for so much replayability, we find ourselves obsessively tapping away so we can evolve our pets. You also earn a good amount of gems (the premium currency) just by completing easy quests and logging in consistently. 5/5.
We accidentally clicked that our pet goes on a journey please add a feature so you can get it back please.
Must have! This game has given us so many good memories and its humor is actually quite clever!! Its likely a game most ages can play happily, even with ads its experience doesnt get ruined.
Such a cute and fun game, all the kotodamas are so cute too.
We love this game. Very few glitches! The music keeps stopping when we click on furniture and other menus. Ive been playing this game for years and Im sad they dont seem to be able to talk yet.
Kotodama is such a cute, fun, and adorable game to play. You can grow your own little pets using words! Ive been playing this game for a long time and its AMAZING! But the one thing we wanted to discuss is why does it take so long just so that we can make our kotodama grow up? There are barely any hearts so it takes very long. Other than that minor issue the game is wonderful! Lovee! -Lulu.
This game tickles our pickle just right,,, ive been playing it since it came out basically throughout multiple cheap tablets and little samsung doodads and always enjoyed it :>} although,, theres a bug (we think its a bug) where ill be watching an ad and ill still hear the little gringlies talking. What. Are they saying about us beghind our back. Make them stop it please thats so mean of them.
This game absolutely bongles our bingles dude! Holio our little slugy tantabas orb, we LOVE this peculiar critter. Five stars just for this spectacular guy! Sweat and tears 6 hours. Makes us wanna lollygag. Maybe even feel a little verklempt. Perchance. Gets the gears in our waggish brain turning and slingling. Such a whiffler zonk to the braim. Yep. Love you holio our whimsical little freak. Catawampus dongle.
Ive never spent money on a phone game before but we love this game! Sometimes we get stuck on the gift giving screen and have to restart the game but no biggie as it loads faster than most games. We did accidentally click spend instead of next on a fortunewas wondering if we could get our 700 gems back.
We love this game but we wish there were more furniture options!!! Everything else is good we just wish our room could be more customizable.
Hi and Im new to this game but Ive been having problems with the passwords to make a specific Kotodama something we would like and Im sure for other players is have recipes with the password on them that you can collect when you get a gift from a add or when you level up Im very sure people would love this update so it would be much easier and we would appreciate it so much and thank you.
Have not been able to even start the app in days. We tried everything to get it to work. The map has not been updated in so long. We would never of spent actual cash had we known the map would not be updated in any kind of timely fashion.
Its real fun and relaxing, the characters are cute and interactive and often times the prompts and the things they say are get a laugh out of us. Although we dont like repetitive clicking, the dialogue makes up for it! There are many references to trends like Gen Z and unlike other games, they arent weird and out of place. Overall, 9/10 we enjoy this game :).
We saw an ad on YouTube and immediately downloaded it. We usually dont play many games on our phone but this one really peaked our interest! The art and characters are so adorable. We have so many of the black hole guys and we love them. We are so excited for new updates and characters! Would recommend! :).
Very fun, ads arent too bad and it feels good to play as a free to play user.
As you have seen the title, this game is great! There is a lot of things to do with your KotoDummies, and great designs. Very cute! The only problem is that it lags often. But to sum it up, we love this game.
We got this game on a whim and didnt think much of it. When opening the game tells you right away and upfront that there will be ads which, in our opinion, is great. Anyway the game itself is very fun and we kept coming back to evolve more lil creatures. Its so sweet, we really recommend you play it.
It is such a cute game ^^ we love the little guys, like (we forgot the names because our memory is bad, but toast boi).
This game is so cute. Its amazing and its literally free therapy so please install it.
Its cute, its nice, nothing to complain about but still nothing to write home about. That being said we are going to continue to play it.
The concept of this game is cool, but for some reason, this game warms our phone. Its also laggy, and when we want to claim a free present by watching an ad, it wont show the ad or it crashes. Poorly optimized, but has potential.
Omg this game is soo cute and fun! Barely any ads, and you can raise so many cute pets quickly. We just love the idea of this soooo much and the creator really made it entertaining and fun and everything. Thank you so much.
Yall we are so OBSESSED with this game we have been putting everyone on ever since we downloaded it we love this game so much its one of the very few games we can play for hours and not get bored this game makes us so happy we just always wanna play it all the time its literally so much fun and so cute and we just love everything about it THANK YOU FOR MAKING THIS BEAUTIFUL GAME.
Its a really nice game, ive spent our money on it and we really think its worth the price, but we notice the lack of notification rewards, a few months ago they use to give us mostly gems and op rewards (ex.: 500 gems and an event pull), but now there has been little to NO rewards given to us players, and we feel like its a bit dissapointing. Doesnt affect gameplay or anything, just kind of sad to see :(.
We love this cute little game! Minimal ads, and just the cutest creatures we want to selectively breed and study in a Petri dish!! 10/10 would divorce our catgirl wife for this.
This game is amazing but our account got hacked and every time we enter the game it freezes and we can only look at our kotodumies and not play. Plssss fix this.
So many cute little kotodummies and they are all unique and cute also relaxing sometimes funny and overall a cute pixel game who we think is one of the best.
So we downloaded the latest update and we checked our dailies and that but after that we cant move the screen or press anything we cant even click on the hearts so we dont know if this some kind of update bug but can you fix this.
Told us happy birthday, almost cried lol. Really awesome game, we genuinely enjoy it. Its fun and simple, just teaching your little kotodami things words and getting something random out of it, 10/10.
This game is very nice! We love how furniture increases the gauge and how unique it is! We hope there can be more updates soon. :).
They are just so cute this is perfect for our small feebly monkey brain we love colors and sounds.
We tend to have a really bad habit of downloading games, playing them for a few hours, getting bored, and never playing them again. BUT one night at like 3am we were scrolling through the app store and saw this and thought why not, and downloaded itnow we are addicted. Ive been playing nonstop for 3 days. Its such a cute concept and all the kotodummies are unique and funny we just love it! Also the coin and gem system is perfect! Unlike most games, its actually quite easy to refill your gems and stay at a consistent amount! And the accessories you can get to give to the kotodummies are sooo cute. So far our favorite kotodummy is path. Im gonna go play some more now >_<.
We just downloaded this yesterday, and Im already level 14. This shows how addicting this app is. The designs is cute and adorable, and the way you play this is just so relaxing! Some suggestions are to chat with the kotodama, and do different activities while waiting for the hearts to spawn. Another suggesting is to have different maps. For example, a ocean, garden, park and others that you can place your kotodama in. The last suggestion is to have different furniture section, what we mean is sections with different styles. That will make finding furnitures of your liking easier. Overall, a great game.
When we first got this game, our first little dude was the bread dog. Our mom loved him and she passed away recently. We got a new phone and all our stuff was gone. We redownloaded the app multiple times trying to get our first one to be fidough again, but we cannot find him anywhere. We love this game still, will always search for our fidough.
It's so a cute and absurd and such a unique idea from a very small 3 person team. Lots of Japanese culture. Give it a try if you loved pet games or tamagotchi or digimon raising type games! It also encourages you to take breaks and play it like a little bit every once in awhile. All purchases are completely optional and just for fun, too.
Its a really cute game. But every time our kotodama gets enough love to evolve an ad wants to play RIGHT infront of it which causes the evolution to not even happen. :/.
The ads happen every couple minutes and it just make this game not fun. Every time they evolve there already an ad come up. Overall, fun and cute game but if they want to continue the longevity of this game, we think laying off too much ads will help.
We normally get little games like this and lose interest within a week or two. Its really common with our short attention span. But not this game! Ive had it for about a month now and Im still obsessed! Everything is so adorable, and the game is so fun! We only wish it was a bit easier to get different little buddies, seeing as we have 2/3 of each . But other than that, fave game ever.
We love everything about this game. We are very excited for the possibility of new features coming out and love to try getting new accessories and graduated buddies. The humor does not try to hard and is very humble and sweet, reminds us of talking to a friend. This game feels like a warm hug and as someone who suffers with major depression, it really does make us happy to play.
User feedback from Apple App Store
App Details
- Version: 3.83.2
- Size: 534.75 MB
- iOS: 13.0 or later
- Languages: EN, JA, KO, ZH, ZH
- Content Advisory:
- Developer: Polaris-x Inc
Last updated: 3rd December 2025 | Genre: Simulation, Casual | Developer: Polaris-x Inc