Comparison

Aiyu vs KAMUI Mobile

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

Head to head

Aiyu

Live Voice English Chat Agent

About

Aiyu

Features

Read full description

It is a voice-enabled app built on a shared mission. To inspire personal growth and meaningful conversations through AI. Whether you’re a Japanese college student aiming to become more social and fluent in English, or a U.S. student interested in deep, values-based dialogues.

About

KAMUI Mobile

Features

Read full description

KAMUI Mobile is a simple learning app designed to help you understand how to build mobile applications. By adding the Piano feature, a piano app icon will appear and you can launch a basic piano application. This allows you to easily experience and learn the process of mobile app development.

Screenshots

Aiyu4 screens

KAMUI Mobile3 screens

Verdict

The call

The clearest difference is in-app purchases: KAMUI Mobile at none against Aiyu's 4. KAMUI Mobile also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement 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. Aiyu sells 4 in-app purchases, starting at $3.99 per month. KAMUI Mobile asks for nothing beyond the download.

UpkeepUpdate frequency

Aiyu ships an update fortnightly, KAMUI Mobile every 2 days. Both last shipped on October 25, 2026.

Scorecard2 real differences · 4 level

Aiyu versus KAMUI Mobile: the parameters behind the verdict, then further details
Parameter	Aiyu	KAMUI Mobile
Price	Free	Free
Update frequency	Fortnightly	Every 2 days — better
Ads	No	No
In-app purchases	Yes	No — better
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	15.1	15.1
Further details — not scored
Size	45 MB	33 MB
Age rating	4+	4+
Developer	Aiyu LLC	KandaQuantum

In-app purchases

4 purchases

Aiyu

Subscriptions3

大学生プラン3 Days trial$3.991 Month
アイユーブースタープラン$5.991 Month
スタンダードプラン3 Days trial$9.991 Month

One-time1

ブースタープラン$5.99

None

KAMUI Mobile

No in-app purchases

Questions

Is Aiyu free?

Aiyu is free to download, with in-app purchases available.

Is KAMUI Mobile free?

KAMUI Mobile is free to download, with no in-app purchases.

Do Aiyu or KAMUI Mobile have ads?

Neither Aiyu nor KAMUI Mobile shows ads.

Which is updated more often, Aiyu or KAMUI Mobile?

Aiyu ships an update fortnightly, and KAMUI Mobile every 2 days. Most recently, Aiyu was updated on October 25, 2026 and KAMUI Mobile on October 25, 2026.