Pocketbook Appendix
28
Quality Score
Niche
Pocketbook Appendix
by Axis co., ltd
Medium confidence
✍️ bumetric analysis
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Pocketbook Appendix is an Android app from Axis co., ltd in the Books & Reference category, currently rated 1.0★ across 3,672 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 28: Niche (micro-niche or pre-traction stage). For a Books & Reference app, that means micro-niche or pre-traction stage. 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
$835
per month
→
12-mo forecast
$730 – $2632
per month
→
24-mo forecast
$676 – $6088
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
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$75K
↳ What it cost to build · not monthly revenue
Likely range $55K – $100K
$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 |
| ⚙ Books & Reference complexity ×0.95 | $-2525 |
| 🌐 Cross-platform reach (iOS + Android) | +$26K |
Total estimate
$75K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$10K
↳ What it would sell for · not monthly revenue
Marketplace range $10K – $15K · 12× 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 |
| ⭐ ★ rating < 3.5 (weak) | -18% |
| 🏷 Books & Reference category multiple | -2% |
Final multiple
12× MRR
👥 Estimated audience size
400K
Lifetime downloads (US-equivalent)
Monthly active
40K
Daily active
8.0K
Synthetic estimate from ratings × category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent — true global audience can be 5-10× larger for international apps. Full math + source list on /methodology.
How we sized it
| 📲 Books & Reference engagement | ~110 installs / rating |
| 🔁 Books & Reference D30 retention | 10% |
| 📍 DAU / MAU stickiness | 0.20 |
DAU / MAU
20% sticky
🛠 Estimated tech stack
🤖
Native Android (Kotlin)
High confidence · 80%
Also possible
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
| 🏷 Category context | Books & Reference |
| 📦 Compact Android bundle | → Native Kotlin |
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$835/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition, low defensibility moat
6 months
$711 – $1.7K
12 months
$730 – $2.6K
24 months
$676 – $6.1K
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 · 26/100INDIE TIERlimited signalGrowth Velocity
5.0
Founder Strength
3.1
Product Quality
1.8
Revenue Strength
2.9
Monetization Maturity
1.0
Defensibility
2.0
Market Position
0.0
Operational Safety
5.0
- 💰 Revenue: Marginal — $334 - $2088/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 1.0★ across 3,672 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 419d ago — possibly dormant.
- ⚠️ Risk: Elevated — dormant (419d since update).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 18-32× monthly = $15K-$26K.
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 3 of 3 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Low install base (3,672 ratings)METRIC | +$1,500 | |
| Below-average rating (1.0★)METRIC | −$1,500 | |
| Ad-supported / freemiumMETRIC | +$600 |
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.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Pocketbook Appendix
- Developer
- Axis co., ltd
- Bundle ID
- jp.co.technosquare.android.gappendix
- App Store URL
- Open in App Store
- Category
- Books & Reference
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- www.technosquare.co.jp
- 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
- $115/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.
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
Pocketbook Appendix is english version of Techo-no-furoku(手帳の付録).
This application is like the Japanese pocketbook appendix.
It has a lot of information on Japan and more than Pocketbook Appendix.
[Contents]
- Age table
- Conversion table
- Postal charges
- Emergency number
- Japanese holiday
- Rokuyō
- Prefectures of Japan
- Country number
- Time difference
- Writing of letter
- Noshigami
- Calendar (Koyomi)
- Solar system
- The twelve signs of the zodiac
- Language of flowers
- Long-lived celebration
- Wedding Anniversary… View full description on the official store →
This application is like the Japanese pocketbook appendix.
It has a lot of information on Japan and more than Pocketbook Appendix.
[Contents]
- Age table
- Conversion table
- Postal charges
- Emergency number
- Japanese holiday
- Rokuyō
- Prefectures of Japan
- Country number
- Time difference
- Writing of letter
- Noshigami
- Calendar (Koyomi)
- Solar system
- The twelve signs of the zodiac
- Language of flowers
- Long-lived celebration
- Wedding Anniversary… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v2.1.12🔄 updated 0d ago📂 Books & Reference💰 Free📺 Ad-supported
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Pocketbook Appendix: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
About this analysis
Why medium confidence: 3,672 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Pocketbook Appendix make per month?▴
Based on our ML-calibrated revenue forecast, Pocketbook Appendix earns approximately $835/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.
What apps are like Pocketbook Appendix?▴
Browse the full Books & Reference 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.
Who makes Pocketbook Appendix?▴
Pocketbook Appendix is published by Axis co., ltd on the Google Play 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 Pocketbook Appendix's BU Score?▴
Pocketbook Appendix has a BU Score of 28/100 (Niche). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.