43
Quality Score
Emerging
Waka 4.0 – Ebook & Audiobook
✍️ bumetric analysis
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Waka 4.0 – Ebook & Audiobook is an iOS app from WAKA EBOOK CORPORATION in the Food & Drink category, currently rated 3.3★ across 96 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 43: Emerging (early traction worth watching). For a Food & Drink app, that means early traction worth watching. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
💰 Revenue · today and ahead
Today
$1.9K/mo
In 12 months
$1.7K – $6.0K
In 24 months
$1.5K – $13.9K
INDIE tierFREE
💡 Grow this revenue
Free AI audit of this app’s store listing
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.9K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$1.6K – $3.8K
12 months
$1.7K – $6.0K
24 months
$1.5K – $13.9K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Pre-traction · 27/100INDIE TIERFREE (NO MONETIZATION)limited signalRevenue Strength
3.3
Product Quality
1.1
Market Position
2.0
Growth Velocity
5.0
Defensibility
6.0
Operational Safety
0.0
Founder Strength
4.1
Monetization Maturity
0.5
- 💰 Revenue: Modest — $762 - $4767/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.31★ across 96 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: High — 2.6% refund mentions, scam/fraud mentions detected, bug mentions above category norm.
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 12-22× monthly = $22K-$41K. Discount applied for operational risk..
Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
🗣
Voice of Customer
Based on 114 reviews across 7 markets● 32% positive · ● 54% neutral · ● 14% negative · Rating drift: -1.03★ (declining — recent 50: 2.28★ vs lifetime: 3.31★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇬🇧 GB
+0.45
🇺🇸 US
+0.17
🇨🇦 CA
+0.11
🇯🇵 JP
+0.08
🇦🇺 AU
+0.07
🇫🇷 FR
-0.00
🇩🇪 DE
-0.02
Top praise themes
thêm nhiều ×4 nhiều sách ×4 truyen hon ×4 nội dung ×3 đọc sách ×3 sách hay ×3 nhieu truyen ×3 cập nhật ×3
Top complaint themes
đọc được ×15 đăng nhập ×15 không thể ×11 nhưng không ×10 trả tiền ×10 không đọc ×7 sau khi ×7 được nữa ×6
Risk signals
Refund mentions: 2.6% Subscription complaints: 4% Bug mentions: 7% Fraud / scam mentions: 0.9%
🧪
Tech & Domain Intel — waka.vn
- Mail provider
- Google Workspace
- Tech stack
- Google Workspace · Mailgun
Derived from public RDAP + DNS TXT records (no scraping, no login).
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3.3125★ | 96 | 3.3125★ this version |
| 🇬🇧 GB | 4★ | 7 | 4★ this version |
| 🇩🇪 DE | 3.3★ | 20 | 3.3★ this version |
| 🇫🇷 FR | 2.53846★ | 13 | 2.53846★ this version |
| 🇯🇵 JP | 2.64179★ | 67 | 2.64179★ this version |
| 🇨🇦 CA | 3.1875★ | 16 | 3.1875★ this version |
| 🇦🇺 AU | 3.55882★ | 34 | 3.55882★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 0★ | 0 | — |
Range:
💰 Forecast Revenue / mo
MODELRevenue 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 7 of 7 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.00)METRIC | +$2,800 | |
| bugsREVIEW | −$1,800 | |
| Below-average rating (3.3★)METRIC | −$1,500 | |
| Mature app (11y old)METRIC | +$1,500 | |
| slowREVIEW | −$1,200 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (96 ratings)METRIC | −$300 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
App Specs
🔐 Own this app? Claim & verify MRR →💾 397 MB🔞 9+📱 iOS 13.0+🔖 v8.7.5🔄 updated 1mo ago🌐 EN📂 Food & Drink💰 Free🚀 Launched 2014 (11y old)
📝 About this app
"Waka – Ứng dụng đọc sách online và nghe sách nói hàng đầu Việt Nam.
Kho ebook, sách nói, truyện ngôn tình, truyện tranh bản quyền. Đọc sách miễn phí, nghe sách mỗi ngày, tải về đọc offline!
Waka mang đến hơn 20.000+ đầu sách điện tử và sách nói bản quyền, truyện ngôn tình, truyện thiếu nhi, sách phát triển bản thân, sách tương tác… được cập nhật mỗi ngày.
Cùng Waka xây dựng văn hóa đọc hiện đại và đồng hành trên hành trình mang tri thức đến gần hơn với độc giả.
Điểm nổi bật của Waka:… View full description on the official store →
Kho ebook, sách nói, truyện ngôn tình, truyện tranh bản quyền. Đọc sách miễn phí, nghe sách mỗi ngày, tải về đọc offline!
Waka mang đến hơn 20.000+ đầu sách điện tử và sách nói bản quyền, truyện ngôn tình, truyện thiếu nhi, sách phát triển bản thân, sách tương tác… được cập nhật mỗi ngày.
Cùng Waka xây dựng văn hóa đọc hiện đại và đồng hành trên hành trình mang tri thức đến gần hơn với độc giả.
Điểm nổi bật của Waka:… View full description on the official store →
🆕 What's New · v8.7.5
Sửa lỗi người dùng phản hồi trên ios 26.0
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Waka 4.0 – Ebook & Audiobook
- Developer
- WAKA EBOOK CORPORATION
- Bundle ID
- vn.com.vega.vegabook
- App Store URL
- Open in App Store
- Category
- Food & Drink
- Content rating
- 9+
- Languages
- EN
Company
- Website
- waka.vn
- 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
- $1.9K/mo
- Top-grossing rank
- Outside top 100 in US Food & Drink
- All-time revenue
- Not found
- Pricing
- Not found
Founder
Founder data not yet collected for this app.
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
Contacts & Socials data not yet collected for this app.
⭐Recent App Store Reviews49 latest · avg 2.51★ · 22.4% 5★ · 42.9% 1★
5★11 (22%)
4★3 (6%)
3★7 (14%)
2★7 (14%)
1★21 (43%)
+1 ratings/week
Praise: love ×2 awesome ×1 recommend ×1Complaints: subscription ×5 crash ×3 refund ×2 bug ×1 broken ×1
Top positive
★★★★★ Tự động gia hạn
Mình đã huỷ tự dộng gia hạn nhưng không được…
★★★★★ Bị crash khi login vào
mình không thể vào đc truyện đc, bấm vào search hoặc Tủ sách đều bị văng ra…
Top negative
★☆☆☆☆ Đăng ký VIP nhưng không thể sử dụng
Mình có đăng ký VIP nhưng ít xài, hôm nay vào lại app thì phát hiện thông tin acc mình là tài khoản thường, ko cho sử dụng sách nói, bắt phải mua gói cước. Mình kiểm tra App Store của Waka thì phát hiện acc VIP mình tới ngày 6 tháng 7 mới p…
★☆☆☆☆ Chậm
Mở sách đúng lâu luôn, nhanh lắm thì cũng 20s. Có khi hơn 1p cũng chưa mở dc cuốn sách…
📈Ratings growth96 ratings+9500% lifetimeShow 3-year history estimate ▾
Tracked (52 weeks) Pre-tracking estimate (37 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.
More by WAKA EBOOK CORPORATION
View all →📦 Portfolio summaryINDIE studio
2apps·$1K/mocombined
⚠ Concentrated — top app contributes 100% of combined revenue (single-app dependency)
Full revenue analysis
Read the article-style breakdown for Waka 4.0 – Ebook & Audiobook: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.