CRUMB
59
Quality Score
Solid
CRUMB
Medium confidence
✍️ bumetric analysis
“
CRUMB is an iOS app from Vital Group Limited in the Productivity category, currently rated 4.4★ across 134 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Quality Score is 59: Solid (established niche player). For a Productivity 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
$3.7K
per month
→
12-mo forecast
$3.3K – $11.8K
per month
→
24-mo forecast
$3.0K – $27.2K
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
$100K
↳ What it cost to build · not monthly revenue
Likely range $75K – $135K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~2.2y 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 (496 MB) | +$40K |
| ⚙ Productivity complexity ×1.10 | +$9K |
Total estimate
$100K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$50K
↳ What it would sell for · not monthly revenue
Marketplace range $40K – $75K · 15× MRR multiple
💸
~0.5× 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 |
| 🏷 Productivity category multiple | +8% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
15× MRR
👥 Estimated audience size
10K
Lifetime downloads (US-equivalent)
Monthly active
3.0K
Daily active
1.3K
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
| 📲 Productivity engagement | ~75 installs / rating |
| 🔁 Productivity D30 retention | 30% |
| 📍 DAU / MAU stickiness | 0.45 |
DAU / MAU
43% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$3.7K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: low defensibility moat
6 months
$3.2K – $7.4K
12 months
$3.3K – $11.8K
24 months
$3.0K – $27.2K
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 · 38/100INDIE TIERlimited signalGrowth Velocity
5.0
Founder Strength
3.0
Product Quality
6.1
Revenue Strength
3.6
Monetization Maturity
1.0
Defensibility
3.0
Market Position
2.0
Operational Safety
7.0
- 💰 Revenue: Modest — $1K - $9K/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.38★ across 134 reviews — solid.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 1381d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (1381d 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 = $67K-$119K.
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 8 of 8 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.00)METRIC | +$2,800 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| slowREVIEW | −$1,200 | |
| Good rating (4.4★)METRIC | +$800 | |
| Established app (3y old)METRIC | +$800 | |
| Early-stage install base (134 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 · v1.0.3
Version 1.0.3 Updates:
· Camera touch controls
· Undo/Remove Point functionality when creating wired components
· Breadboards and Power Rail can be snapped together
· The Scope window can now be moved around the screen
Bug Fixes:… Full release notes →
· Camera touch controls
· Undo/Remove Point functionality when creating wired components
· Breadboards and Power Rail can be snapped together
· The Scope window can now be moved around the screen
Bug Fixes:… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- CRUMB
- Developer
- Vital Group Limited
- Bundle ID
- com.Vital-Group-Ltd.CRUMB
- App Store URL
- Open in App Store
- Category
- Productivity
- 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
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $3.7K/mo
- Top-grossing rank
- Outside top 100 in US Productivity
- 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 growth134 ratings+13300% lifetimeShow 3-year history estimate ▾
Tracked (20 weeks) Pre-tracking estimate (37 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.
💰Pricing History$0.00 → $7.99 (+0%)
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
CRUMB offers an easy to use and interactive introduction to electronic circuits
Fully realised in 3D, you can construct prototype circuits as you would at the workbench without the risk of terminal component failure or the hassle of ordering individual components
CRUMB comes with a great selection of components to allow you to jump straight in to creating prototype circuits
With the catalogue available, it is possible to study the workings of transistors & audio filtering, all the way to programming an EEPROM to run a basic program… View full description on the official store →
Fully realised in 3D, you can construct prototype circuits as you would at the workbench without the risk of terminal component failure or the hassle of ordering individual components
CRUMB comes with a great selection of components to allow you to jump straight in to creating prototype circuits
With the catalogue available, it is possible to study the workings of transistors & audio filtering, all the way to programming an EEPROM to run a basic program… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 496 MB🔞 4+📱 iOS 13.0+🔖 v1.0.3🔄 updated 0d ago🌐 EN📂 Productivity💰 Free
📅
What Worked™ · Development Pipeline
9 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 →
2026-05
⭐
Rating ↓ 4.90 → 4.38 (dropped 0.52★)
2026-05
💲
Went paid — introduced $7.99 price point
2026-03
⭐
Rating ↑ 2.89 → 4.90 (improved 2.01★)
2026-03
📈
Crossed 50 ratings — social-proof flywheel kicking in
2023-10
📈
Crossed 10 ratings — social-proof flywheel kicking in
2023-01
⭐
Rating ↓ 3.40 → 3.00 (dropped 0.40★)
2022-12
⭐
Rating ↓ 4.00 → 3.40 (dropped 0.60★)
2022-09
⭐
Rating ↓ 5.00 → 4.00 (dropped 1.00★)
2022-08
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 3.33333★ | 3 | 3.33333★ this version |
| 🇧🇷 BR | 4.66667★ | 3 | 4.66667★ this version |
| 🇨🇦 CA | 4.23529★ | 17 | 4.23529★ this version |
| 🇩🇪 DE | 4.91303★ | 23 | 4.91303★ this version |
| 🇫🇷 FR | 5★ | 2 | 5★ this version |
| 🇬🇧 GB | 3.95238★ | 21 | 3.95238★ this version |
| 🇮🇳 IN | 5★ | 1 | 5★ this version |
| 🇯🇵 JP | 4.78571★ | 14 | 4.78571★ this version |
| 🇺🇸 US | 4.38518★ | 135 | 4.38518★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for CRUMB: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
Similar apps in Productivity
About this analysis
Why medium confidence: 134 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does CRUMB make per month?▴
Based on our ML-calibrated revenue forecast, CRUMB earns approximately $3.7K/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 CRUMB?▴
Browse the full Productivity 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 CRUMB?▴
CRUMB is published by Vital Group 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 CRUMB's BU Score?▴
CRUMB has a BU Score of 59/100 (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.