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53
BU Score
Solid

ずんだボイス2 - 進化した読み上げ・作曲アプリ

4.8 ✍️ Editor
✍️ bumetric analysis

ずんだボイス2 - 進化した読み上げ・作曲アプリ is an iOS app from Toraichi Igarashi, currently rated 4.8★ across 13 ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.

Our BU Score puts it at 53: Solid (established niche player). For an app like this, that means established niche player.

Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
0
since first record
Range:

💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Excellent rating (4.8★)METRIC
+$2,200
Ad-supported / freemiumMETRIC
+$600
Single-language (English only)METRIC
−$400
Pre-traction phase (13 ratings)METRIC
−$300
Growing app (1y old)METRIC
+$200
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 401 MB🔞 4+📱 iOS 15.6+🔖 v1.5.4🔄 updated 5d ago🌐 JA💰 Paid🚀 Launched 2025 (1y old)

📝 About this app

ずんだボイスは、VoiceVoxエンジンを使用した高品質なテキスト読み上げアプリです。

【主な機能】
・テキストを入力するだけで、ずんだもんの声で読み上げ
・完全オフライン対応 - インターネット接続不要
・音声ファイルの保存・共有機能
・読み上げ履歴の管理
・ダークモード対応

【キャラクター】
ずんだもんをはじめ、VoiceVoxの様々なキャラクターの音声を利用できます。追加の音声モデル(VVMファイル)をインポートすることで、さらに多くのキャラクターを追加できます。

【注意事項】
本アプリはVoiceVoxエンジンを使用しています。音声合成にはVoiceVoxのライセンスが適用されます。

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
ずんだボイス2 - 進化した読み上げ・作曲アプリ
Developer
Toraichi Igarashi
Bundle ID
net.yaaaa.zundavoice2
App Store URL
Open in App Store
Category
Not found
Content rating
4+
Languages
JA

Company

Website
zundavoice.yaaaa.net
Tagline
Not found
Description
Not found
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$57/mo
Top-grossing rank
Outside top 100 in US
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth13 ratings+550% lifetimeShow 3-year history estimate ▾Mar 2025Nov 2025May 2026
Tracked (1 weeks) Pre-tracking estimate (15 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
Full revenue analysis
Read the article-style breakdown for ずんだボイス2 - 進化した読み上げ・作曲アプリ: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
Read deep-dive →