Comparison

BTTL for YouTube vs RapApp

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

Head to head

About

BTTL for YouTube

Features

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フリースタイルバトルの動画をあつめたアプリです。公式にアップロードされた動画を自動で収集し、プレイリストのように再生できます。

About

RapApp

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RapAppとは、自分の位置情報をもとに近くのユーザーを検索し、マッチしたユーザーと直接会いMCバトルが行えるというアプリです。相手ユーザーとマッチした際にランダムでビートが選ばれ、ビートと連動した小節数と本数でバトルが行われます。バトルの勝者判定にはAIが使われており、一つ一つのバトルに判定がつくことでMCバトルのスキル向上に繋がります。周りの人にMCバトルを好きな人がいなかったり、一緒にやる相手がいないなどの人の悩みを解決し、もっと身近にMCバトルと触れ合う機会を提供します。

Screenshots

BTTL for YouTube3 screens

RapApp4 screens

Verdict

The call

The clearest difference is update cadence: RapApp at every 3 weeks against BTTL for YouTube's every 2 months. BTTL for YouTube's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.2). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

BTTL for YouTube ships an update every 2 months, RapApp every 3 weeks. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 3 level

BTTL for YouTube versus RapApp: the parameters behind the verdict, then further details
Parameter	BTTL for YouTube	RapApp
Price	Free	Free
Update frequency	Every 2 months	Every 3 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone
Requires iOS	13.0 — better	17.2
Further details — not scored
Size	13 MB	24 MB
Age rating	12+	12+
Developer	RYOSUKE HIRAMATSU	Yuta Kodama

In-app purchases

None

BTTL for YouTube

No in-app purchases

None

RapApp

No in-app purchases

Questions

Is BTTL for YouTube free?

BTTL for YouTube is free to download, with no in-app purchases.

Is RapApp free?

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

Do BTTL for YouTube or RapApp have ads?

Neither BTTL for YouTube nor RapApp shows ads.

Which is updated more often, BTTL for YouTube or RapApp?

BTTL for YouTube ships an update every 2 months, and RapApp every 3 weeks. Most recently, BTTL for YouTube was updated on October 3, 2026 and RapApp on October 5, 2026.