Comparison

back number vs Jフェス

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

Head to head

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

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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

Jフェス

Your all-in-one guide for major Japanese music festivals. Get early ticket access, artist announcements, venue maps, and essential tips for beginners. Relive the experience with live photos and setlists after the event.

Highlights

Official festival app
Early ticket applications
Artist announcements
Beginner's guide
Timetable and maps
Live photos and setlists

Features

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ROCK IN JAPAN FESTIVAL、COUNTDOWN JAPAN、JAPAN JAMの公式アプリ。出演アーティスト発表からフェスのチケットお申し込み、初心者に嬉しいガイド情報など、フェスに関するすべてを全面サポート！ ■チケット先行申込はこのアプリだけ！チケットの先行受付から当日の入場まで、すべてが「Jフェス」アプリで完結！出演アーティスト発表やチケットの受付開始もプッシュ通知でいち早くお知らせします。 ■フェス初心者にも嬉しいガイドブックも！会場へのアクセス、オフィシャルグッズの購入方法、服装や持ち物のアドバイス、参加者のファッションスナップなど、フェスを楽しむためのありとあらゆる情報をイラストや写真を交えながら解説します。 ■タイムテーブル・マップなど必ずフェス当日に役立つ機能を搭載！毎回好評のマイタイムテーブルや、飲食店、グッズ情報、エリアマップなど、当日役立つ機能ももちろん搭載。気になる飲食店やグッズをお気に入り登録したり、フェスの準備にもお役立ち。 ■ライブ写真やセットリストでフェスが終わった後も楽しもう！フェス当日は各アクト終了後からライブ写真とセットリストをアプリに掲載。フェスに参加した方はもちろん、参加できなかった方もお楽しみいただけるコンテンツです。 ■対応フェスティバル ROCK IN JAPAN FESTIVAL（ロック・イン・ジャパン・フェスティバル） COUNTDOWN JAPAN （カウントダウン・ジャパン） JAPAN JAM （ジャパン・ジャム）

Screenshots

back number2 screens

Jフェス4 screens

Verdict

The call

The clearest difference is in-app purchases: Jフェス at none against back number's 2. back number's advantage is iOS requirement (15.0 vs 17.0). On price, review sentiment, update cadence and ads 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. Jフェス asks for nothing beyond the download.

UpkeepUpdate frequency

back number ships an update every 6 weeks, Jフェス every 4 weeks. The most recent releases landed on October 1, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 5 level

back number versus Jフェス: the parameters behind the verdict, then further details
Parameter	back number	Jフェス
Price	Free	Free
Positive reviews	21.2% of reviews — better	14.8% of reviews
Update frequency	Every 6 weeks	Every 4 weeks — better
Ads	No	No
In-app purchases	Yes	No — better
Monetization	Free with in-app purchases	Free — better
Devices	iPhone, iPod — better	iPhone
Requires iOS	15.0 — better	17.0
Further details — not scored
Size	161 MB	173 MB
Age rating	4+	4+
Developer	Fanplus, Inc.	rockin'on holdings inc.

Customer experience

back number

Written reviews52 reviews

Positive21.2%

Neutral7.7%

Negative71.2%

Jフェス

Written reviews54 reviews

Positive14.8%

Neutral11.1%

Negative74.1%

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

Jフェス

No in-app purchases

Questions

Is back number free?

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

Is Jフェス free?

Jフェス is free to download, with no in-app purchases.

Do back number or Jフェス have ads?

Neither back number nor Jフェス shows ads.

Which is updated more often, back number or Jフェス?

back number ships an update every 6 weeks, and Jフェス every 4 weeks. Most recently, back number was updated on October 1, 2026 and Jフェス on September 28, 2026.