BACKDOOR会員アプリ vs 音楽家のための英単語
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BACKDOOR会員アプリ
This is an exclusive members-only application for Amusement Casino BACKDOOR. Access special features and information as a valued member.
- Exclusive member access
- Information for Amusement Casino BACKDOOR
- Members-only features
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This is a members-only app for Amusement Casino BACKDOOR.
音楽家のための英単語
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ヒップホップ、ジャズ、アイドル等のジャンル別に英単語を学習できます。 制限時間は１分間。３問間違えるとゲームオーバー。１０問正解するとゲームクリア。 かるたやクイズのようにゲーム感覚で楽しく英単語学習を継続できます。
Screenshots
Verdict
BACKDOOR会員アプリ and 音楽家のための英単語 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BACKDOOR会員アプリ ships an update monthly, 音楽家のための英単語 every 2 months. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.
| Parameter | BACKDOOR会員アプリ | 音楽家のための英単語 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 41 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | ROUNDERS, K.K. | Hiroaki Toya |
In-app purchases
BACKDOOR会員アプリ
No in-app purchases
音楽家のための英単語
No in-app purchases
