Comparison

ChatAI vs Echo

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

Head to head
About

ChatAI

Engage in thoughtful conversations, brainstorm creative ideas, or generate various forms of written content. This AI-powered chatbot offers personalized responses across a wide range of topics.

Highlights
  • AI-powered chatbot
  • Personalized responses
  • Brainstorm creative ideas
  • Write long-form content
  • Casual conversation
  • Understand wide range of topics
Features
Read full description

ChatAl is a revolutionary AI chat robot powered by AI.  Simply type in your message or commands, and ChatAI will respond with a thoughtful and personalized response. Whether you want to brainstorm your creative ideas, write long-form content (reports, essays, emails, articles, etc.) , chat about current events, share your thoughts and feelings, or just have a casual conversation,ChatAI is here to listen and engage with you. With its constantly evolving Al technology, ChatAI is able to understand and respond to a wide range of topics and topics of conversation. Try it today and experience the wonderful future! Friendly reminder: All data from ChatAIis generated by computational science and big data. Please do not use it in scientific treatments that require personalization such as medical treatment. This app is not responsible for the consequences. Privacy: https://github.com/InoHawk/app-ChatAI/blob/main/Privacy Terms: https://github.com/InoHawk/app-ChatAI/blob/main/UsageTerms

About

Echo

This app helps you track important dates like anniversaries and manage daily notes. It offers local reminders, diary entries with moods, and a "On This Day" feature to revisit past memories. The minimalist design keeps everything private and on your device.

Highlights
  • Anniversary and countdown tracking
  • Local reminders
  • Diary entries with moods
  • On This Day flashbacks
  • Privacy-first local storage
  • PDF export of diary
Features
Read full description

Echo Days is the quiet home for your time: anniversaries, a diary, private memos, and Insights in one app you buy once and keep forever. No ads, no subscriptions, no accounts, and no cloud — everything you write stays on your device. WHY PAY ONCE Free apps make you pay with attention and data. Echo keeps it simple: one purchase unlocks every feature, forever. No monthly fees, no tracking — the app works for you, not for advertisers. ANNIVERSARIES Count-up days, countdowns, and yearly anniversaries, calculated automatically. Custom icons and local reminders mean the moments that matter never slip by. DIARY Write short entries with mood tags, link them to events, find anything with search and filters, and export the whole notebook to PDF. MEMOS Accounts, cards, documents, and plain notes in one place. Custom rows, pinning, search, and one-tap copy put what you need at your fingertips. INSIGHTS & ON THIS DAY See how your records are distributed, how often you write, and how your mood shifts — then revisit past years, one day at a time. PRIVATE BY DESIGN No account, no sync, nothing uploaded. A gesture lock keeps the whole app to yourself. 7 languages, ready for iPhone Duo and iPad. One purchase, a companion for years. Give your memories one calm, complete home.

Screenshots

ChatAI4 screens
Echo4 screens

Verdict

The call

The clearest difference is price: ChatAI at Free against Echo's $3.99. ChatAI also leads on update cadence (every 3 weeks vs every 6 weeks) and iOS requirement (15.6 vs 18.6). Echo's advantage is in-app purchases (none vs 3) and review sentiment (100% vs 80%). On ads 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

ChatAI is free to download; Echo costs $3.99 up front. ChatAI sells 3 in-app purchases, starting at $3.99 per 7 days. Echo asks for nothing beyond the download.

UpkeepUpdate frequency

ChatAI ships an update every 3 weeks, Echo every 6 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 4 level
ChatAI versus Echo: the parameters behind the verdict, then further details
ParameterChatAIEcho
PriceFree — better$3.99
Rating4.0 (4 ratings) — better—
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings4 — better—
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better18.6
Further details — not scored
Size6 MB3 MB
Age rating17+4+
Developer浩 刘鹏 杨

Customer experience

ChatAI

All ratings4 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

Echo

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

ChatAI

Subscriptions3
  • ChatAI Vip Subscrition Weekly$3.997 Days
  • Vip Subscription Monthly$12.991 Month
  • ChatAI Vip Sbuscription Yearly$29.991 Year
None

Echo

No in-app purchases

Questions

Is ChatAI free?
ChatAI is free to download, with in-app purchases available.
Is Echo free?
Echo costs $3.99, with no in-app purchases.
Do ChatAI or Echo have ads?
Neither ChatAI nor Echo shows ads.
Which is updated more often, ChatAI or Echo?
ChatAI ships an update every 3 weeks, and Echo every 6 weeks. Most recently, ChatAI was updated on November 3, 2026 and Echo on November 5, 2026.

Other comparisons