Translation Book:AI Translator
66
Quality Score
Solid
Translation Book:AI Translator
by TROT (HK) COMPANY LIMITED
Medium confidence
✍️ Bumetric analysis
“
Translation Book:AI Translator is an iOS app from TROT (HK) COMPANY LIMITED in the Utilities category, currently rated 4.6★ across 103 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 66: Solid (established niche player). For a Utilities 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
$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
27 snapshots on record
Rating
4.6
Reviews
103 reviews
Forecast Revenue / mo
$500
Snapshots tracked
27
since Oct 2024
ONE-TIME · BUILD
💰 Estimated build cost
$60K
↳ What it cost to build · not monthly revenue
Likely range $45K – $80K
$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 |
| ⚙ Utilities complexity ×0.85 | $-7575 |
| ⚙ 2.9y maintenance × ~1-person team | +$17K |
Total estimate
$60K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$10K
↳ What it would sell for · not monthly revenue
Marketplace range $5K – $10K · 15× MRR multiple
💸
~0.2× 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 |
| 📅 2.9y proven track record | +14% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Utilities category multiple | -10% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
15× MRR
👥 Estimated audience size
17K
Lifetime downloads (US-equivalent)
Monthly active
3.3K
Daily active
660
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
| 📲 Utilities engagement | ~200 installs / rating |
| 📅 2.9y of rating accumulation | -14% |
| 🔁 Utilities D30 retention | 20% |
| 📍 DAU / MAU stickiness | 0.20 |
DAU / MAU
20% sticky
🛠 Estimated tech stack
🍎
Native iOS (SwiftUI)
Medium confidence · 70%
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
| 📦 App bundle size | 37 MB |
| 🏷 Category context | Utilities |
| 📦 Small-mid iOS bundle | → Native SwiftUI (post-2020 era) |
💀 Maintenance status
Slowing
25%
Last shipped 2026-09-08 · 46 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
| 📅 46 days since last update | Healthy release cadence |
| 👥 Small user base (103 ratings) + 2.9y old | +10% (solo-project pattern) |
Verdict
Slowing
🔬
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: low defensibility moat
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 · 44/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
5.4
Product Quality
6.5
Revenue Strength
2.7
Monetization Maturity
1.0
Defensibility
2.7
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.61★ across 103 reviews — solid.
- 📍 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 ($27K/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 7 of 7 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| subscriptionREVIEW | +$2,500 | |
| premiumREVIEW | +$2,200 | |
| Excellent rating (4.6★)METRIC | +$2,200 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (103 ratings)METRIC | +$400 | |
| Single-language (English only)METRIC | −$400 | |
| Growing app (2y old)METRIC | +$200 |
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 · vv1.1.3
Bug fixes: Resolved several known issues for a smoother, more reliable experience.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Translation Book:AI Translator
- Developer
- TROT (HK) COMPANY LIMITED
- Bundle ID
- com.translateverysmart.LetterMesh
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- EN
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
- Outside top 100 in US Utilities
- 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 growth119 ratings+11800% lifetimeShow 3-year history estimate ▾
Tracked (27 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 Quarter2 releases tracked
🚀Version Release Timeline2 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
Translation Book – AI-Powered Translation Made Simple
Translation Book delivers fast and accurate translations for text, voice, images, and imported text files. Whether you are traveling, studying, working, or communicating across languages, the app helps you understand and express yourself clearly in seconds.
All-in-One Translation Toolkit
Text Translation: Type or paste text and get instant, accurate results.
Voice Translation: Speak naturally and translate conversations in real time.
Photo Translation: Capture menus, signs, or small text sections for quick recognition.… View full description on the official store →
Translation Book delivers fast and accurate translations for text, voice, images, and imported text files. Whether you are traveling, studying, working, or communicating across languages, the app helps you understand and express yourself clearly in seconds.
All-in-One Translation Toolkit
Text Translation: Type or paste text and get instant, accurate results.
Voice Translation: Speak naturally and translate conversations in real time.
Photo Translation: Capture menus, signs, or small text sections for quick recognition.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 37 MB🔞 4+📱 iOS 14.0+🔖 vv1.1.3🔄 updated 1mo ago🌐 EN📂 Utilities💰 Paid🚀 Launched 2023 (2y old)
📅
What Worked™ · Development Pipeline
10 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 →
2026-09
🔧
Shipped update — vv1.1.2 → vv1.1.3
2026-05
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-05
⭐
Rating ↑ 3.20 → 4.61 (improved 1.41★)
2026-03
⭐
Rating ↓ 4.20 → 3.20 (dropped 1.00★)
→ 30 days after: revenue −$4.2K/mo · rating −1.00★ · reviews −66 medium · co-occurring
2026-03
⭐
Rating ↑ 3.75 → 4.20 (improved 0.45★)
→ 30 days after: rating −0.55★ medium · co-occurring
2026-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: rating −0.55★ medium · co-occurring
2026-02
⭐
Rating ↑ 3.33 → 3.75 (improved 0.42★)
→ 30 days after: rating −0.55★ high confidence
2025-07
⭐
Rating ↑ 2.50 → 3.33 (improved 0.83★)
2025-06
⭐
Rating ↑ 1.00 → 2.50 (improved 1.50★)
→ 30 days after: revenue +$67/mo · rating +0.83★ high confidence
2024-10
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.3★ | 10 | 4.3★ this version |
| 🇧🇷 BR | 5★ | 4 | 5★ this version |
| 🇨🇦 CA | 4.36842★ | 19 | 4.36842★ this version |
| 🇩🇪 DE | 4.31818★ | 22 | 4.31818★ this version |
| 🇫🇷 FR | 4.2★ | 10 | 4.2★ this version |
| 🇬🇧 GB | 4.54545★ | 11 | 4.54545★ this version |
| 🇮🇳 IN | 5★ | 4 | 5★ this version |
| 🇯🇵 JP | 4.125★ | 8 | 4.125★ this version |
| 🇺🇸 US | 4.61345★ | 119 | 4.61345★ this version |
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Translation Book:AI Translator: 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: 103 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does Translation Book make per month?▴
Based on our ML-calibrated revenue forecast, Translation Book earns approximately $500/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 Translation Book profitable?▴
With estimated build cost $60K and monthly revenue $500, Translation Book looks well below break-even — current monthly revenue is much smaller than the estimated build cost. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does Translation Book have?▴
Estimated audience: ~17K lifetime downloads, ~3K monthly active users, and ~660 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 Translation Book?▴
Browse the full Utilities 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 Translation Book built with?▴
Our heuristic places Translation Book on the Native iOS (SwiftUI) stack (Medium confidence, 70%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is Translation Book still actively maintained?▴
Maintenance status: Slowing (25% abandonment risk). Last shipped version was 1 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Translation Book sell for?▴
Estimated acquisition value: $10K (marketplace range $5.0K – $10K). Calculated as 15× 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 Translation Book last updated?▴
Translation Book last shipped a new version on 2026-09-08 — 1 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Translation Book?▴
Translation Book is published by TROT (HK) COMPANY LIMITED 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 Translation Book's BU Score?▴
Translation Book has a BU Score of 66/100 (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.