執筆忘字 — 找成語／成語分類／押韻／同音異字
58
Quality Score
Solid
✍️ Bumetric analysis
“
執筆忘字 — 找成語／成語分類／押韻／同音異字 is an Android app from Donut Pond in the Books & Reference category, currently rated 4.5★ across 417 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 58: Solid (established niche player). For a Books & Reference app, that means established niche player. 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
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID 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
1 snapshots on record
Rating
4.5
Reviews
417 reviews
Forecast Revenue / mo
$5.0K
Snapshots tracked
1
since May 2026
ONE-TIME · BUILD
💰 Estimated build cost
$145K
↳ What it cost to build · not monthly revenue
Likely range $110K – $195K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~2.4y at current MRR
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 |
| 💎 In-app purchase plumbing | +$9K |
| ⚙ Books & Reference complexity ×0.95 | $-2975 |
| 🌐 Cross-platform reach (iOS + Android) | +$31K |
| ⚙ 9.6y maintenance × ~1-person team | +$57K |
Total estimate
$145K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$175K
↳ What it would sell for · not monthly revenue
Marketplace range $125K – $225K · 33× MRR multiple
💸
~1.2× build cost (break-even+)
Synthetic estimate. Multiple band derived from iap / freemium model + 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
| 💎 IAP / freemium model base | 28× MRR |
| 📅 9.6y proven track record | +20% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Books & Reference category multiple | -2% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
33× MRR
👥 Estimated audience size
32K
Lifetime downloads (US-equivalent)
Monthly active
1.7K
Daily active
340
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 |
| 📅 9.6y of rating accumulation | -30% |
| 🔁 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 |
💀 Maintenance status
Likely abandoned
95%
Last shipped 2021-06-01 · 1971 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
| 📅 5y+ since last update | Likely abandoned |
| 👥 Small user base (417 ratings) + 9.6y old | +10% (solo-project pattern) |
Verdict
Likely abandoned
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
6 months
$4.7K – $7.9K
12 months
$5.2K – $10.8K
24 months
$6.4K – $19.2K
Compound growth at +4.0% MoM (tier baseline for MID). Range widens with horizon — typical noise band ±25% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Below median · 53/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
5.5
Product Quality
6.2
Revenue Strength
3.7
Monetization Maturity
5.0
Defensibility
9.9
Market Position
0.0
Operational Safety
7.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.45★ across 417 reviews — solid.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 1971d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (1971d since update).
🎯 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 = $90K-$160K.
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:
| excellent appREVIEW | +$1,500 | |
| Mature app (9y old)METRIC | +$1,500 | |
| Good rating (4.5★)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (417 ratings)METRIC | +$400 |
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
- 執筆忘字 — 找成語／成語分類／押韻／同音異字
- Developer
- Donut Pond
- Bundle ID
- com.donutpond.cantonesehomophonic
- App Store URL
- Open in App Store
- Category
- Books & Reference
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- www.donutpond.com
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $5.0K/mo
- Top-grossing rank
- Not found
- All-time revenue
- Not found
- Pricing
- $4.49 per item
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
<b><font color="MidnightBlue">1. 執筆忘字</font></b>
✔ 找同音詞語或成語：「枝竹」或「知足」可以找到「知足常樂」, 找到的字詞會再細分成「同音同字」或「同音異字」
✔ 倉頡碼： 「月心」或「心水」或 BP 可以找到 (愛： 月月心水 BBPE)
✔ 中譯英： 可以找到某字英文字詞
✔ 英譯中： 用英文搜尋可找到相關的中文解釋
<b><font color="MidnightBlue">2. 押韻詞語</font></b>
✔ 用字串最後一個字作為藍本及對應搜尋方式, 例如它的「同聲字」或「同聲韻字」或「同韻字」, 然後從資料庫找到所有字詞結尾屬於這些音韻(注意一個字可能有多於一個發音)。結果會按照不同的音調顯示在每一頁
<b><font color="MidnightBlue">3. 近音組合</font></b>
✔ 這功能跟「押韻詞語」有少許相似, 不過資料來源是以單字的發音, 按照音韻需要作所有排列, 所以適合找某字的近似的音韻調。如果搜尋字串多於一字, 所有可能的排列會一併列出(注意上限是5000個結果)
✔ 找同音詞語或成語：「枝竹」或「知足」可以找到「知足常樂」, 找到的字詞會再細分成「同音同字」或「同音異字」
✔ 倉頡碼： 「月心」或「心水」或 BP 可以找到 (愛： 月月心水 BBPE)
✔ 中譯英： 可以找到某字英文字詞
✔ 英譯中： 用英文搜尋可找到相關的中文解釋
<b><font color="MidnightBlue">2. 押韻詞語</font></b>
✔ 用字串最後一個字作為藍本及對應搜尋方式, 例如它的「同聲字」或「同聲韻字」或「同韻字」, 然後從資料庫找到所有字詞結尾屬於這些音韻(注意一個字可能有多於一個發音)。結果會按照不同的音調顯示在每一頁
<b><font color="MidnightBlue">3. 近音組合</font></b>
✔ 這功能跟「押韻詞語」有少許相似, 不過資料來源是以單字的發音, 按照音韻需要作所有排列, 所以適合找某字的近似的音韻調。如果搜尋字串多於一字, 所有可能的排列會一併列出(注意上限是5000個結果)
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v3.3🔄 updated 5y ago📂 Books & Reference💰 Free📺 Ad-supported💎 IAP $4.49 per item🚀 Launched 2017 (9y old)
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for 執筆忘字 — 找成語／成語分類／押韻／同音異字: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Donut Pond
View all →📦 Portfolio summaryINDIE studio
7apps·$23K/mocombined
✓ Diversified — top app contributes 29%; risk spread across portfolio
About this analysis
Why medium confidence: 417 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does 執筆忘字 — 找成語／成語分類／押韻／同音異字 make per month?▴
Based on our ML-calibrated revenue forecast, 執筆忘字 — 找成語／成語分類／押韻／同音異字 earns approximately $5.0K/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.
Is 執筆忘字 — 找成語／成語分類／押韻／同音異字 profitable?▴
With estimated build cost $145K and monthly revenue $5.0K, 執筆忘字 — 找成語／成語分類／押韻／同音異字 looks break-even-grade — payback period sits around 2.4 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does 執筆忘字 — 找成語／成語分類／押韻／同音異字 have?▴
Estimated audience: ~32K lifetime downloads, ~1K monthly active users, and ~340 daily active users. Derived from ratings count × category installs-per-rating × age decay. US-storefront-equivalent — global audience can be 5-10× larger for internationally-distributed apps.
What apps are like 執筆忘字 — 找成語／成語分類／押韻／同音異字?▴
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.
What is 執筆忘字 — 找成語／成語分類／押韻／同音異字 built with?▴
Our heuristic places 執筆忘字 — 找成語／成語分類／押韻／同音異字 on the Native Android (Kotlin) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is 執筆忘字 — 找成語／成語分類／押韻／同音異字 still actively maintained?▴
Maintenance status: Likely abandoned (95% abandonment risk). Last shipped version was 5+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would 執筆忘字 — 找成語／成語分類／押韻／同音異字 sell for?▴
Estimated acquisition value: $175K (marketplace range $125K – $225K). Calculated as 33× monthly revenue using the standard multiple for the detected monetization model + adjustments for age, rating quality and category demand. Calibrated against 2024-2026 Flippa / Acquire.com / MicroAcquire closed-deal medians.
When was 執筆忘字 — 找成語／成語分類／押韻／同音異字 last updated?▴
執筆忘字 — 找成語／成語分類／押韻／同音異字 last shipped a new version on 2021-06-01 — more than 5 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes 執筆忘字 — 找成語／成語分類／押韻／同音異字?▴
執筆忘字 — 找成語／成語分類／押韻／同音異字 is published by Donut Pond 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 執筆忘字 — 找成語／成語分類／押韻／同音異字's BU Score?▴
執筆忘字 — 找成語／成語分類／押韻／同音異字 has a BU Score of 58/100 (Solid). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.