Comparison

back number vs ギター：本物のコード練習

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

Head to head

初心者でもしっかり覚えられる！

About

back number

Access the latest news and exclusive content from a popular music artist. Enjoy member-only movies and blog posts, all within a dedicated fan community app.

Highlights

Latest artist information
Fan club exclusive movies
Member-only blog posts
Official app content

Features

Read full description

This is back number official app. In this app, you can enjoy various contents such as back number latest information, official fan club "one room" member exclusive movie and member blog.

About

ギター：本物のコード練習

Features

Read full description

ギターを始めたい初心者や、ギターができる人にも楽しめるギターアプリです！簡単な曲から基本的なコードを、実際に指で押さえながら覚えましょう！ギターを買ってから難しくて諦めてしまう人がたくさんいます。なのでまずはアプリでコードを覚えて、そして弾ける曲が増えてからギターを買いましょう！・好きな曲を選んで、コードを見ながら演奏できます！・コードの指の位置が表示されるので、難しいコード譜を見る必要はありません！・ギターの種類を選べます！・カポ（キー）の変更ができます！・利き手の変更ができるので左利きの人も大丈夫です！

Screenshots

back number2 screens

ギター：本物のコード練習3 screens

Verdict

The call

The clearest difference is review sentiment: ギター：本物のコード練習 at 58% against back number's 21%. ギター：本物のコード練習 also leads on in-app purchases (none vs 2) and update cadence (every 5 days vs every 6 weeks). On price, 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

Both are free to download. back number sells 2 in-app purchases, starting at $3.99 per month. ギター：本物のコード練習 asks for nothing beyond the download.

UpkeepUpdate frequency

back number ships an update every 6 weeks, ギター：本物のコード練習 every 5 days. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 4 level

back number versus ギター：本物のコード練習: the parameters behind the verdict, then further details
Parameter	back number	ギター：本物のコード練習
Price	Free	Free
Positive reviews	21.2% of reviews	58.3% of reviews — better
Update frequency	Every 6 weeks	Every 5 days — better
Ads	No	No
In-app purchases	Yes	No — better
Monetization	Free with in-app purchases	—
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	15.0	11.0 — better
Further details — not scored
Size	161 MB	150 MB
Age rating	4+	9+
Developer	Fanplus, Inc.	PortFolder, Inc.

Customer experience

back number

Written reviews52 reviews

Positive21.2%

Neutral7.7%

Negative71.2%

ギター：本物のコード練習

Written reviews12 reviews

Positive58.3%

Neutral16.7%

Negative25.0%

In-app purchases

2 purchases

back number

Subscriptions2

「one room」月額会員$3.991 Month
「back number」月額会員$6.001 Month

None

ギター：本物のコード練習

No in-app purchases

Questions

Is back number free?

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

Is ギター：本物のコード練習 free?

ギター：本物のコード練習 is free to download, with no in-app purchases.

Do back number or ギター：本物のコード練習 have ads?

Neither back number nor ギター：本物のコード練習 shows ads.

Which is updated more often, back number or ギター：本物のコード練習?

back number ships an update every 6 weeks, and ギター：本物のコード練習 every 5 days. Most recently, back number was updated on October 14, 2026 and ギター：本物のコード練習 on October 9, 2026.