41
Quality Score
Emerging
NLB Mobile
Why low confidence: only 34 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
✍️ bumetric analysis
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NLB Mobile is an iOS app from National Library Board Singapore in the Food & Drink category, currently rated 3.4★ across 34 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 41: 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
$500/mo
In 12 months
$437 – $1575
In 24 months
$405 – $3644
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
🤖Also on Android
$536/mo · 1K ratings · 2.3★
View →
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
📈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 (120 MB) | +$28K |
| ⚙Food & Drink complexity ×1.10 | +$7K |
| ⚙9.6y maintenance × ~1-person team | +$57K |
Total estimate$145K
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
Medium confidence · 60%
Also possible
React NativeFlutter
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 | 120 MB |
| 🏷Category context | Food & Drink |
| 📦Mid-large iOS bundle | → Likely native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Active
15%
Last shipped 2026-04-26 · 27 days ago
0 · Active50 · At risk100 · 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
| 📅27 days since last update | Active development |
| 👥Small user base (34 ratings) + 9.6y old | +10% (solo-project pattern) |
VerdictActive
🔬
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
Pre-traction · 36/100INDIE TIERlimited signalRevenue Strength
2.7
Product Quality
2.7
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.4
Operational Safety
8.0
Founder Strength
3.0
Monetization Maturity
1.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.35★ across 34 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: Moderate — 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.
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 6 of 6 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| bugsREVIEW | −$1,800 | |
| Below-average rating (3.4★)METRIC | −$1,500 | |
| Mature app (9y old)METRIC | +$1,500 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Localized (7 languages)METRIC | +$600 | |
| Pre-traction phase (34 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 →💾 120 MB🔞 4+📱 iOS 13.0+🔖 v4.7.1🔄 updated 3w ago🌐 EN, FR, IT, PL, PT +2📂 Food & Drink💰 Free🚀 Launched 2016 (9y old)
📝 About this app
This application is brought to you by the National Library Board, a Singapore Government Agency.
Discover a world of learning with the NLB Mobile app, anywhere, anytime:
• Read ebooks and listen to audiobooks
• Read current eMagazines and eNewspapers
• Access online courses
• Borrow physical library items using your mobile device
• Discover new digital resources and sign in to our websites easily with QR Login
• Manage your library account, and also your family’s accounts
Discover a world of learning with the NLB Mobile app, anywhere, anytime:
• Read ebooks and listen to audiobooks
• Read current eMagazines and eNewspapers
• Access online courses
• Borrow physical library items using your mobile device
• Discover new digital resources and sign in to our websites easily with QR Login
• Manage your library account, and also your family’s accounts
🆕 What's New · v4.7.1
Bug fixes and stability improvements
📅
What Worked™ · Development Pipeline
7 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 →
2026-03
⭐
Rating ↑ 2.54 → 4.40 (improved 1.86★)
2023-11
📈
Crossed 10 ratings — social-proof flywheel kicking in
2021-12
⭐
Rating ↑ 1.88 → 2.22 (improved 0.34★)
2020-02
⭐
Rating ↑ 1.60 → 2.17 (improved 0.57★)
2018-08
⭐
Rating ↑ 1.33 → 1.75 (improved 0.42★)
2017-03
⭐
Rating ↓ 2.00 → 1.50 (dropped 0.50★)
2016-12
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3.35294★ | 34 | 3.35294★ this version |
| 🇬🇧 GB | 4.4★ | 5 | 4.4★ this version |
| 🇩🇪 DE | 0★ | 0 | — |
| 🇫🇷 FR | 5★ | 2 | 5★ this version |
| 🇯🇵 JP | 3.33333★ | 3 | 3.33333★ this version |
| 🇨🇦 CA | 5★ | 2 | 5★ this version |
| 🇦🇺 AU | 2.55555★ | 9 | 2.55555★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 3.84615★ | 13 | 3.84615★ this version |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- NLB Mobile
- Developer
- National Library Board Singapore
- Bundle ID
- sg.gov.nlb.nlbmobile
- App Store URL
- Open in App Store
- Category
- Food & Drink
- Content rating
- 4+
- Languages
- EN, FR, IT, PL, PT, SK, ES
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
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $98/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 Reviews12 latest · avg 2.67★ · 33.3% 5★ · 41.7% 1★
5★4 (33%)
4★0 (0%)
3★1 (8%)
2★2 (17%)
1★5 (42%)
+0 ratings/week
Praise: great ×1 love ×1Complaints: bug ×2
Top positive
★★★★★ The scanning of books to borrow is great
It is convenient to scan and borrow books. I also like the reserve books function. Useful…
★★★★★ Thanks!
My app is somehow 650 Mb… please have a way to clear the cache rather than reinstalling the app. Thanks!!
Love the app.…
Top negative
★☆☆☆☆ Buggy Connectivity and Login
App could be better if we can pass the login page as and when we want to sign in. Have deleted and reinstalled, issue remains. NLB can do better in leading our Digitization by getting its app fixed. Disappointing.
TH
16 Dec 2021…
★☆☆☆☆ App is now HORRID with Feb 2021 update
This new app is HORRENDOUS.
Who is the developer????? It makes going to the library to get books a very horrible experience now that it’s impossible to borrow any books!! App is unable to even load the e card…
📈Ratings growth34 ratings+3300% lifetimeShow 3-year history estimate ▾
Tracked (14 weeks) Pre-tracking estimate (36 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.
❓ Frequently Asked Questions
8 answers · auto-generated from this app's public dataHow much does NLB Mobile make per month?▾
Based on our ML-calibrated revenue forecast, NLB Mobile earns approximately $97/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 NLB Mobile profitable?▾
With estimated build cost $145K and monthly revenue $97, NLB Mobile 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.
What apps are like NLB Mobile?▾
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 NLB Mobile built with?▾
Our heuristic places NLB Mobile 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 NLB Mobile still actively maintained?▾
Maintenance status: Active (15% abandonment risk). Last shipped version was 27 days ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was NLB Mobile last updated?▾
NLB Mobile last shipped a new version on 2026-04-26 — less than a month ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes NLB Mobile?▾
NLB Mobile is published by National Library Board Singapore 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 NLB Mobile's BU Score?▾
NLB Mobile has a BU Score of 41/100 (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.