BOOK WALKER - 人気の漫画や小説が続々登場
44
Quality Score
Emerging
BOOK WALKER - 人気の漫画や小説が続々登場
by BOOKWALKER
Low confidence
✍️ Bumetric analysis
“
BOOK WALKER - 人気の漫画や小説が続々登場 is an iOS app from BOOKWALKER in the Food & Drink category, currently rated 3.7★ across 3 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 44: 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.
💰 Monthly revenue · now vs forecast
● Right now
$500
per month
→
12-mo forecast
$437 – $1575
per month
→
24-mo forecast
$405 – $3644
per month
INDIE tier
💡 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
62 snapshots on record
Rating
3.7
Reviews
3 reviews
Forecast Revenue / mo
$500
Snapshots tracked
62
since Aug 2014
🤖Also on Android
$241/mo · 2K ratings · 2.6★
View →
ONE-TIME · BUILD
💰 Estimated build cost
$170K
↳ What it cost to build · not monthly revenue
Likely range $130K – $230K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Slow ROI — current MRR is well below build cost
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 🧱 MVP baseline (design + 1-store ship) | +$28K |
| 📱 5 unique screens × $4.5K | +$22K |
| 📦 Asset bundle (122 MB) | +$28K |
| ⚙ Food & Drink complexity ×1.10 | +$7K |
| ⚙ 13.9y maintenance × ~1-person team | +$83K |
Total estimate
$170K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$10K
↳ What it would sell for · not monthly revenue
Marketplace range $5K – $10K · 15× MRR multiple
💸
~0.1× build cost (under-water)
Synthetic estimate. Multiple band derived from ad-supported + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.
How the multiple was built
| 📺 Ad-supported base | 15× MRR |
| 📅 13.9y proven track record | +20% |
| ⭐ ★ rating 3.5-4.0 (mixed) | -8% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
15× MRR
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
Medium confidence · 60%
Also possible
React Native
Flutter
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries — for binary-level certainty you would need an SDK intelligence tool or the manifest itself. Reasoning chain on the right. Full ruleset on /methodology.
Signals we read
| 📦 App bundle size | 122 MB |
| 🏷 Category context | Food & Drink |
| 📦 Mid-large iOS bundle | → Likely native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Active
15%
Last shipped 2026-10-09 · 26 days ago
0 · Active
50 · At risk
100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅 26 days since last update | Active development |
| 👥 Small user base (3 ratings) + 13.9y old | +10% (solo-project pattern) |
Verdict
Active
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$500/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
$426 – $993
12 months
$437 – $1.6K
24 months
$405 – $3.6K
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
Early-stage solo · 41/100INDIE TIERexpected for tierRevenue Strength
2.7
Product Quality
3.0
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.5
Operational Safety
10.0
Founder Strength
4.5
Monetization Maturity
1.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.7★ across 3 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: Low — no material risk signals detected.
🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.
💵 For acquirers: Estimated asking range 18-32× monthly = $9K-$16K. Portfolio play ($3K/mo combined) commands premium.
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.
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 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| 5 starREVIEW | +$1,800 | |
| Mature app (13y old)METRIC | +$1,500 | |
| slowREVIEW | −$1,200 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Pre-traction phase (3 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.
🆕 What's New · v7.9.3
・いくつかの修正を行いました。
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- BOOK WALKER - 人気の漫画や小説が続々登場
- Developer
- BOOKWALKER
- Bundle ID
- Not found
- App Store URL
- Open in App Store
- Category
- Food & Drink
- Content rating
- 17+
- Languages
- EN, JA
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $500/mo
- Top-grossing rank
- Not found
- 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.
📈Ratings growth411 ratings+13600% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (0 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.
🚀Update Frequency · Releases per Quarter4 releases tracked
🚀Version Release Timeline4 releases tracked
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.
📝 About this app
◆BOOK WALKER（ブックウォーカー）とは
人気の漫画や小説が読める国内最大級の電子書籍アプリ。
KADOKAWAグループ運営＆15周年で安心！
少年漫画・少女漫画から、ライトノベル、小説、BL、TL、ビジネス書、実用書、雑誌に至るまで幅広く配信。
異世界、なろう系、恋愛、百合、ラブコメ、ファンタジー、ミステリー、ホラーなど、多彩なジャンルの作品を取り揃えています。
電子書籍200万冊以上配信中！
無料で読めるマンガや小説も2万冊以上！
◆BOOK WALKER（ブックウォーカー）の特徴
1） 漫画もラノベも小説も、全部あります。総合電子書籍アプリ！
おかげさまで15周年。無料作品数2万冊以上！
電子書籍200万冊以上、配信出版社1,600社以上の取り扱い実績で、スキマ時間に楽しめる読書ライフをご提供。
2）毎日無料、あります。
話・連載において、タテスクロール漫画作品などを1話単位にて読むことができます。
「毎日無料」が表示されているものは、23時間おきに1話無料でご覧いただけます。
3）書籍のサブスク、あります。
BOOK WALKERなら毎月お得な定額料金で、単行本と雑誌でマンガを楽しめる「読み放題 マンガコース」、マンガ単行本・マンガ誌に加えてラノベ・文芸なども読める「読み放題 MAXコース」の2つの読み放題コースを選べます。… View full description on the official store →
人気の漫画や小説が読める国内最大級の電子書籍アプリ。
KADOKAWAグループ運営＆15周年で安心！
少年漫画・少女漫画から、ライトノベル、小説、BL、TL、ビジネス書、実用書、雑誌に至るまで幅広く配信。
異世界、なろう系、恋愛、百合、ラブコメ、ファンタジー、ミステリー、ホラーなど、多彩なジャンルの作品を取り揃えています。
電子書籍200万冊以上配信中！
無料で読めるマンガや小説も2万冊以上！
◆BOOK WALKER（ブックウォーカー）の特徴
1） 漫画もラノベも小説も、全部あります。総合電子書籍アプリ！
おかげさまで15周年。無料作品数2万冊以上！
電子書籍200万冊以上、配信出版社1,600社以上の取り扱い実績で、スキマ時間に楽しめる読書ライフをご提供。
2）毎日無料、あります。
話・連載において、タテスクロール漫画作品などを1話単位にて読むことができます。
「毎日無料」が表示されているものは、23時間おきに1話無料でご覧いただけます。
3）書籍のサブスク、あります。
BOOK WALKERなら毎月お得な定額料金で、単行本と雑誌でマンガを楽しめる「読み放題 マンガコース」、マンガ単行本・マンガ誌に加えてラノベ・文芸なども読める「読み放題 MAXコース」の2つの読み放題コースを選べます。… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 122 MB🔞 17+📱 iOS 17.0+🔖 v7.9.3🔄 updated 3w ago🌐 EN, JA📂 Food & Drink💰 Paid🚀 Launched 2012 (13y old)
📅
What Worked™ · Development Pipeline
16 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-10
🔧
Shipped update — v7.9.1 → v7.9.3
2026-09
📸
Refreshed store screenshots — 14 of 14 updated
2026-08
🔧
Shipped update — v7.9.0 → v7.9.1
2026-08
📸
Refreshed store screenshots — 6 of 6 updated
2026-07
🔧
Shipped update — v7.8.12 → v7.9.0
2026-06
🔄
Monetization changed: freemium → free
2026-06
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-03
⭐
Rating ↑ 2.42 → 3.70 (improved 1.28★)
→ 30 days after: revenue −$73.5K/mo · rating +1.28★ · reviews −70 high confidence
2023-04
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$1.8K/mo · rating −0.06★ high confidence
2020-09
⭐
Rating ↑ 2.35 → 2.67 (improved 0.32★)
→ 30 days after: revenue +$1.8K/mo · rating −0.15★ high confidence
2018-08
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$918/mo · rating −0.11★ high confidence
2017-11
⭐
Rating ↑ 2.20 → 2.71 (improved 0.51★)
2017-11
⭐
Rating ↑ 2.20 → 2.67 (improved 0.47★)
→ 30 days after: revenue +$2.4K/mo · rating +0.51★ medium · co-occurring
2017-07
⭐
Rating ↑ 1.75 → 2.20 (improved 0.45★)
2016-09
⭐
Rating ↑ 1.00 → 1.75 (improved 0.75★)
2014-08
🚀
First tracked snapshot — initial data captured
→ 30 days after: revenue +$919/mo high confidence
📸
Store Page History
20 SCREENSHOT CHANGESEvery time a developer swaps a store screenshot we archive both versions. Compare side-by-side to see what messaging / visuals changed.
iPad screenshots
Slot 1
3 ver.
3 ver.
2026-06-05
2026-08-09
2026-09-12
Slot 2
3 ver.
3 ver.
2026-06-05
2026-08-09
2026-09-12
Slot 3
3 ver.
3 ver.
2026-06-05
2026-08-09
2026-09-12
Slot 4
2 ver.
2 ver.
2026-06-05
2026-09-12
Slot 5
2 ver.
2 ver.
2026-06-05
2026-09-12
Slot 6
2 ver.
2 ver.
2026-06-05
2026-09-12
iPhone screenshots
Slot 1
3 ver.
3 ver.
2026-06-05
2026-08-09
2026-09-12
Slot 2
3 ver.
3 ver.
2026-06-05
2026-08-09
2026-09-12
Slot 3
3 ver.
3 ver.
2026-06-05
2026-08-09
2026-09-12
Slot 4
2 ver.
2 ver.
2026-06-05
2026-09-12
Slot 5
2 ver.
2 ver.
2026-06-05
2026-09-12
Slot 6
2 ver.
2 ver.
2026-06-05
2026-09-12
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3.96359★ | 412 | 3.96359★ this version |
| 🇬🇧 GB | 3.88889★ | 45 | 3.88889★ this version |
| 🇩🇪 DE | 3.6875★ | 32 | 3.6875★ this version |
| 🇫🇷 FR | 3.72727★ | 11 | 3.72727★ this version |
| 🇯🇵 JP | 4.38307★ | 12,661 | 4.38307★ this version |
| 🇨🇦 CA | 3.85714★ | 35 | 3.85714★ this version |
| 🇦🇺 AU | 3.57447★ | 47 | 3.57447★ this version |
| 🇧🇷 BR | 4.375★ | 8 | 4.375★ this version |
| 🇮🇳 IN | 4.71429★ | 7 | 4.71429★ this version |
🔔
Track this app’s revenue
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📝 Description
95
BU Score · Transcendent
About this analysis
Why low confidence: only 3 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
BOOK WALKER - 人気の漫画や小説が続々登場 is a very early-stage iOS app in the food & drink space with weak public traction — only 3 ratings, no founder-verified MRR, and not ranked in any monitored grossing chart. The app appears to be monetised, but public signals are too sparse for a precise revenue estimate.
Bottom line: treat all revenue, audience and acquisition-value numbers on this page as directional only — not founder-verified facts.
❓ Frequently Asked Questions
7 answers · auto-generated from this app's public dataHow much does BOOK WALKER - 人気の漫画や小説が続々登場 make per month?▴
Low-confidence model estimate. BOOK WALKER - 人気の漫画や小説が続々登場 has only 3 App Store ratings, so our revenue model has very little signal to work with — treat the ~$500/mo figure as directional only, not a verified MRR. No founder-verified revenue data is available for this app. See methodology for the formula and confidence bands.
What apps are like BOOK WALKER - 人気の漫画や小説が続々登場?▴
Browse the full Food & Drink category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.
What is BOOK WALKER - 人気の漫画や小説が続々登場 built with?▴
Our heuristic places BOOK WALKER - 人気の漫画や小説が続々登場 on the Native iOS (Swift / UIKit) stack (Medium confidence, 60%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: React Native, Flutter.
Is BOOK WALKER - 人気の漫画や小説が続々登場 still actively maintained?▴
Maintenance status: Active (15% abandonment risk). Last shipped version was 26 days ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was BOOK WALKER - 人気の漫画や小説が続々登場 last updated?▴
BOOK WALKER - 人気の漫画や小説が続々登場 last shipped a new version on 2026-10-09 — less than a month ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes BOOK WALKER - 人気の漫画や小説が続々登場?▴
BOOK WALKER - 人気の漫画や小説が続々登場 is published by BOOKWALKER on the Apple App Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.
What is BOOK WALKER - 人気の漫画や小説が続々登場's BU Score?▴
BOOK WALKER - 人気の漫画や小説が続々登場 has a BU Score of 44/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.