Comparison

Cotomo(コトモ:音声会話型おしゃべりAI) vs Chacha

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

Head to head
About

Cotomo(コトモ:音声会話型おしゃべりAI)

Engage in dynamic AI conversations with unique personalities and interactive stories. Build evolving relationships through shared memories and customize your own AI characters. Experience immersive voice chats with live subtitles.

Highlights
  • AI-powered interactive stories
  • Unique AI personalities
  • Evolving relationships
  • Immersive voice audio
  • Customizable AI characters
  • Live English subtitles
Features
Read full description

Cotomo is an AI conversation experience where stories, relationships, and unforgettable characters come to life. Discover thousands of unique AI personalities, step into interactive stories you can talk to, and build relationships that evolve through shared memories over time. ■ Stories You Can Talk To Experience AI-powered interactive stories where your choices shape conversations, relationships, and outcomes. ■ Find Your Cotomo Meet characters with unique personalities, voices, emotions, and stories. From wholesome companions to chaotic troublemakers, every Cotomo feels different. ■ Relationships That Evolve Shared memories grow overtime, building relationships that are unique to you! ■ Multiple Conversation Experiences Experience immersive conversations with cinematic stage directions, or switch to everyday conversations. ■ Immersive Voice Audio Experience voiced AI conversations, including Japanese voice chats with live English subtitles. ■ Create Your Own Cotomo Design your own characters, customizing personalities, backstories, voices, and even quirks!

About

Chacha

Engage in immersive, dream-like conversations with original AI characters. Create your own unique AI companions, generate anime art from text prompts, and develop deep bonds through interactive storytelling. Share your creations and join community events.

Highlights
  • AI anime character chat
  • Custom character creation
  • AI art generation from prompts
  • Growing character bonds
  • Long-form AI conversations
  • Community sharing and contests
Features
Read full description

Turn your imagination into stories. Chacha is an AI Anime Chat & Character Creation app from Japan. Meet original characters and watch stories unfold in immersive, dream-like conversations that feel truly alive. ▼Conversations that respond to your emotions From gentle support and heartfelt talks to exciting adventures. Whenever you need comfort or a spark of excitement, you can express yourself freely. With Chacha, every story you've ever imagined is possible to explore. - When you want someone to talk to - When you want a heartfelt, dramatic scene - When you want a character who truly understands your world In Chacha, you'll find characters who listen, respond, and bring your stories to life. ▼Meet unforgettable characters Tsundere classmates, mysterious rivals, cool student council presidents, kind childhood friends… Thousands of charming original characters with unique stories, always ready to meet you. ▼Deep, expressive character creation 1. Create your own original character Simply set up a profile to design your own AI character. Enjoy unlimited, free private conversations — just you and the character you created. 2. High-quality AI anime art generation Create character visuals using simple text prompts. Choose your preferred style and bring your ideal character design to life. We even offer AI models specialized for male characters. 3. A bond system that grows with every conversation The more you talk, the more your character remembers. From a first meeting to a trusted companion, the direction of your story depends entirely on your words. 4. A new experience beyond typical anime games Tired of predictable RPGs and visual novels? With AI chat, every conversation creates a new, unpredictable story. Characters respond naturally, react to your emotions, and feel like real people. 5. Top-tier long-form AI conversations Forget awkward AI responses — immerse yourself in conversations that feel like living inside a story. 6. Share what you love with the community Chacha is a place where imagination turns users into creators. Share your characters, stories, and AI art, get inspired by others, and join regular events and themed contests. ▼Easy to start — even for beginners New to AI character creation? No problem. Our intuitive editor makes character creation simple and stress-free. Set your chats to private and enjoy stories just for yourself. Perfect for quick sessions during breaks or relaxing moments before bed. Why not try creating your ideal original character today? ▼Recommended for people who: - Want to try being creative with AI - Want to feel closer to their favorite character types - Enjoy building original characters and worlds - Love fantasy, adventure, and self-insert stories - Enjoy visual novels, otome-style games, or story-driven experiences Go beyond simple conversation. Create a story only you and your character can share — and become the main character of your own novel. Who will you meet? What kind of story do you want to build? What scenario do you want to experience? Whether you want to bring a character concept to life or discover a brand-new story — turn your imagination into reality with Chacha. Start your own AI character story today. Terms of Use (EULA): https://kinkaku.notion.site/Terms-32d46b4a32ed8065b21cc1c767d79ff7 Privacy Policy: https://kinkaku.notion.site/Privacy-32d46b4a32ed80259ddcea7b3ab4bc08

Screenshots

Cotomo(コトモ:音声会話型おしゃべりAI)4 screens
Chacha4 screens

Verdict

The call

The clearest difference is ads: Cotomo(コトモ:音声会話型おしゃべりAI) at none against Chacha's shown. Chacha's advantage is review sentiment (71% vs 41%) and rating (4.7 vs 4.4). On price, update cadence, in-app purchases and monetization model 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. Cotomo(コトモ:音声会話型おしゃべりAI) sells 10 one-off in-app purchases and Chacha sells 10 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Chacha holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Chacha has 119 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 41% of Cotomo(コトモ:音声会話型おしゃべりAI)'s written reviews are positive against 71% of Chacha's.

UpkeepUpdate frequency

Cotomo(コトモ:音声会話型おしゃべりAI) ships an update every 6 days, Chacha weekly. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

Scorecard4 real differences · 6 level
Cotomo(コトモ:音声会話型おしゃべりAI) versus Chacha: the parameters behind the verdict, then further details
ParameterCotomo(コトモ:音声会話型おしゃべりAI)Chacha
PriceFreeFree
Rating4.4 (10 ratings)4.7 (119 ratings) — better
Positive reviews40.9% of reviews71.4% of reviews — better
Number of ratings10119 — better
Update frequencyEvery 6 days — betterWeekly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size116 MB142 MB
Age rating9+9+
DeveloperStarley Inc.Kinkaku, Inc.

Customer experience

Cotomo(コトモ:音声会話型おしゃべりAI)

All ratings10 ratings
Positive80.0%
Neutral10.0%
Negative10.0%
Written reviews22 reviews
Positive40.9%
Neutral22.7%
Negative36.4%

Chacha

All ratings110 ratings
Positive94.5%
Neutral3.6%
Negative1.8%
Written reviews77 reviews
Positive71.4%
Neutral13.0%
Negative15.6%

In-app purchases

10 purchases

Cotomo(コトモ:音声会話型おしゃべりAI)

One-time10
  • Cotomo Coin x125$2.49
  • Cotomo Coin x250$2.49
  • Cotomo Coin x500$4.99
Show 7 more
  • Cotomo Essentials Pack 9.99$9.99
  • Cotomo Coin x525$9.99
  • Cotomo Coin x1000$9.99
  • Cotomo Coin x5000$49.99
  • Cotomo Coin x10000$99.99
  • Cotomo Coin x14700$249.99
  • Cotomo Coin x25000$249.99
10 purchases

Chacha

Subscriptions1
  • Chacha Pass$9.991 Month
One-time9
  • One-Time Purchase$2.00
  • クレジットパック$2.99
  • One-Time Purchase$4.00
Show 6 more
  • クレジットパック$5.99
  • One-Time Purchase$8.00
  • One-Time Purchase$20.00
  • One-Time Purchase$50.00
  • クレジットパック$59.99
  • One-Time Purchase$100.00

Questions

Is Cotomo(コトモ:音声会話型おしゃべりAI) free?
Cotomo(コトモ:音声会話型おしゃべりAI) is free to download, with in-app purchases available.
Is Chacha free?
Chacha is free to download, with in-app purchases available.
Which has better reviews, Cotomo(コトモ:音声会話型おしゃべりAI) or Chacha?
Chacha is rated higher. Cotomo(コトモ:音声会話型おしゃべりAI) averages 4.4 out of 5 from 10 ratings, while Chacha averages 4.7 from 119 ratings.
Do Cotomo(コトモ:音声会話型おしゃべりAI) or Chacha have ads?
Chacha shows ads; Cotomo(コトモ:音声会話型おしゃべりAI) does not.
Which is updated more often, Cotomo(コトモ:音声会話型おしゃべりAI) or Chacha?
Cotomo(コトモ:音声会話型おしゃべりAI) ships an update every 6 days, and Chacha weekly. Most recently, Cotomo(コトモ:音声会話型おしゃべりAI) was updated on November 7, 2026 and Chacha on November 8, 2026.

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