Lineman's Reference - XFMR LAB
57
Quality Score
Solid
Lineman's Reference - XFMR LAB
Medium confidence
✍️ bumetric analysis
“
Lineman's Reference - XFMR LAB is an iOS app from Digital Apprentice LLC in the News category, currently rated 4.2★ across 127 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 57: Solid (established niche player). For a News 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
$3.9K
per month
→
12-mo forecast
$3.4K – $12.2K
per month
→
24-mo forecast
$3.1K – $28.1K
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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$110K
↳ What it cost to build · not monthly revenue
Likely range $80K – $150K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~2.7y 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 |
| 📦 Asset bundle (176 MB) | +$40K |
| ⚙ News complexity ×1.20 | +$18K |
Total estimate
$110K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$45K
↳ What it would sell for · not monthly revenue
Marketplace range $35K – $50K · 13× MRR multiple
💸
~0.4× 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 |
| 🏷 News category multiple | -5% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
13× MRR
👥 Estimated audience size
15K
Lifetime downloads (US-equivalent)
Monthly active
2.2K
Daily active
990
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
| 📲 News engagement | ~120 installs / rating |
| 🔁 News D30 retention | 15% |
| 📍 DAU / MAU stickiness | 0.45 |
DAU / MAU
45% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$3.9K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
6 months
$3.3K – $7.7K
12 months
$3.4K – $12.2K
24 months
$3.1K – $28.1K
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
Early-stage solo · 42/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
4.6
Product Quality
5.8
Revenue Strength
3.6
Monetization Maturity
1.0
Defensibility
4.7
Market Position
2.0
Operational Safety
7.0
- 💰 Revenue: Modest — $1K - $9K/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.15★ across 127 reviews — below category median.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 484d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (484d 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 = $69K-$123K.
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:
| Paid app ($12.99)METRIC | +$2,800 | |
| bugsREVIEW | −$1,800 | |
| highly recommendREVIEW | +$1,400 | |
| Good rating (4.2★)METRIC | +$800 | |
| Established app (4y old)METRIC | +$800 | |
| Early-stage install base (127 ratings)METRIC | +$400 | |
| Single-language (English only)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.
🆕 What's New · v1.3.02
Fixed a bug where rotation meter sometimes would not work properly.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Lineman's Reference - XFMR LAB
- Developer
- Digital Apprentice LLC
- Bundle ID
- digitalapprentice.xfmr
- App Store URL
- Open in App Store
- Category
- News
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Digital Training for Linemen & Apprentices, Created By A Journeyman Lineman.
- Description
- Digital Apprentice Developing intuitive & mobile Lineman education applications and software. By Linemen for Linemen.
- 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
- $3.4K/mo
- Top-grossing rank
- Outside top 100 in US News
- 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
- Socials
- facebook facebook.com/digitalapprentice.net · instagram instagram.com/digital_apprentice_llc · tiktok tiktok.com/@digitalapprentice.net · youtube youtube.com/channel/UCxssyGx7FjTSK56M…
- info@digitalapprentice.net
- Phone
- 20230125-211155
- Contact page
- Not found
- About page
- digitalapprentice.net/about
📈Ratings growth127 ratings+12600% lifetimeShow 3-year history estimate ▾
Tracked (39 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.
📝 About this app
This app is a fully functional transformer lab simulator that was designed and developed by a journeyman lineman, for lineman and apprentices. You can use this app to study and learn your transformer connections.
When the fuses are closed in you can test your connections with a volt meter, ohm meter, and a rotation meter. Abnormal voltages and cutout fuses exploding can occur when improper connections are made. In the labs you can also inspect the transformers' nameplates and secondary coils.… View full description on the official store →
When the fuses are closed in you can test your connections with a volt meter, ohm meter, and a rotation meter. Abnormal voltages and cutout fuses exploding can occur when improper connections are made. In the labs you can also inspect the transformers' nameplates and secondary coils.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 176 MB🔞 4+📱 iOS 12.1+🔖 v1.3.02🔄 updated 0d ago🌐 EN📂 News💰 Paid
📅
What Worked™ · Development Pipeline
4 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
📈
Crossed 50 ratings — social-proof flywheel kicking in
2026-03
💲
Went paid — introduced $12.99 price point
2022-01
📈
Crossed 10 ratings — social-proof flywheel kicking in
2021-12
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 0★ | 0 | — |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇨🇦 CA | 4.5★ | 2 | 4.5★ this version |
| 🇩🇪 DE | 0★ | 0 | — |
| 🇫🇷 FR | 0★ | 0 | — |
| 🇬🇧 GB | 0★ | 0 | — |
| 🇮🇳 IN | 0★ | 0 | — |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇺🇸 US | 4.13281★ | 128 | 4.13281★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Lineman's Reference - XFMR LAB: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Digital Apprentice LLC
View all →📦 Portfolio summaryINDIE studio
2apps·$3K/mocombined
⚠ Concentrated — top app contributes 94% of combined revenue (single-app dependency)
About this analysis
Why medium confidence: 127 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Lineman's Reference - XFMR LAB make per month?▴
Based on our ML-calibrated revenue forecast, Lineman's Reference - XFMR LAB earns approximately $3.4K/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 Lineman's Reference - XFMR LAB?▴
Browse the full News 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 Lineman's Reference - XFMR LAB?▴
Lineman's Reference - XFMR LAB is published by Digital Apprentice LLC 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 Lineman's Reference - XFMR LAB's BU Score?▴
Lineman's Reference - XFMR LAB has a BU Score of 57/100 (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.