Lumo by Proton
56
Quality Score
Solid
✍️ GetAppValue analysis
“
Lumo by Proton is an iOS app from Proton AG in the Productivity category, currently rated 3.8★ across 409 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 56: 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
$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
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$55K
↳ What it cost to build · not monthly revenue
Likely range $40K – $75K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~3.6y 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 |
| ⚙ Productivity complexity ×1.10 | +$5K |
Total estimate
$55K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$20K
↳ What it would sell for · not monthly revenue
Marketplace range $15K – $25K · 14× 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 |
| ⭐ ★ rating 3.5-4.0 (mixed) | -8% |
| 🏷 Productivity category multiple | +8% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
14× MRR
👥 Estimated audience size
30K
Lifetime downloads (US-equivalent)
Monthly active
9.1K
Daily active
4.0K
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
44% sticky
🔬
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 · 50/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
7.6
Product Quality
5.3
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
5.3
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.8★ across 409 reviews — below category median.
- 📍 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 = $90K-$160K. Portfolio play ($127K/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 8 of 8 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| Multilingual (11 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (409 ratings)METRIC | +$400 | |
| Growing app (1y 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 · v2.0.1
Picture Purr-fect - You can now download images straight from your chats. The app saves them natively, so grabbing a picture just works.
Link and Let Link - Tapping an external link now opens it correctly in your browser instead of getting stuck in the app.… Full release notes →
Link and Let Link - Tapping an external link now opens it correctly in your browser instead of getting stuck in the app.… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Lumo by Proton
- Developer
- Proton AG
- Bundle ID
- me.proton.lumo
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- CS, NL, EN, FR, DE, IT, PL, PT, RU, ES, TR
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
- ML model estimate / mo
- $1.3K/mo
- Top-grossing rank
- 🇫🇷#89 /100
- 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 growth476 ratings+215% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (0 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution1 of 9 markets
🇫🇷
FR
Top-grossing rank: #89 / 100
Other markets
Outside top 100
in US, GB, DE, FR, JP, CA, AU, BR, IN
in US, GB, DE, FR, JP, CA, AU, BR, IN
This app currently ranks in only one of the 9 markets we monitor. Niche or regional apps often launch this way before global rollout. Rankings update daily.
📊Category Rank Trajectory#89 now · best #89 · worst #94
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
🚀Update Frequency · Releases per Quarter4 releases tracked
🚀Version Release Timeline4 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
Lumo is a zero-access encrypted AI assistant that keeps every conversation private. Your data is never logged, shared, or used to train models. Your chats are yours, and yours alone.
Built by Proton, the privacy brand trusted by over 100 million people and the team behind Proton Mail, VPN, Drive, and Pass.
THOUGHTFUL HELP FOR ANY TASK
Lumo handles everything from quick questions to more complex work. Choose Fast for quick answers or Thinking for multi-step reasoning.
FAST, POWERFUL WEB SEARCH
Get precise, real-time answers in seconds.… View full description on the official store →
Built by Proton, the privacy brand trusted by over 100 million people and the team behind Proton Mail, VPN, Drive, and Pass.
THOUGHTFUL HELP FOR ANY TASK
Lumo handles everything from quick questions to more complex work. Choose Fast for quick answers or Thinking for multi-step reasoning.
FAST, POWERFUL WEB SEARCH
Get precise, real-time answers in seconds.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 44 MB🔞 4+📱 iOS 17.6+🔖 v2.0.1🔄 updated 0d ago🌐 CS, NL, EN, FR, DE +6📂 Productivity💰 Paid
📅
What Worked™ · Development Pipeline
13 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 →
2026-07
🔧
Shipped update — v2.0.0 → v2.0.1
→ 30 days after: reviews +37 medium · co-occurring
2026-06
🔧
Shipped update — v1.5.0 → v2.0.0
→ 30 days after: reviews +41 medium · co-occurring
2026-06
🔧
Shipped update — v1.4.1 → v1.5.0
→ 30 days after: reviews +24 high confidence
2026-05
⭐
Rating ↑ 3.08 → 3.80 (improved 0.72★)
→ 30 days after: reviews +17 high confidence
2026-03
⭐
Rating ↓ 4.00 → 3.05 (dropped 0.95★)
→ 30 days after: reviews +6 medium · co-occurring
2026-03
⭐
Rating ↑ 3.06 → 4.00 (improved 0.94★)
→ 30 days after: revenue +$73/mo · reviews +9 medium · co-occurring
2025-10
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$162/mo · reviews +21 high confidence
2025-08
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$482/mo · rating +0.64★ · reviews +61 high confidence
2025-07
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$322/mo · rating −0.11★ · reviews +43 low · multiple changes
2025-07
⭐
Rating ↑ 2.25 → 2.60 (improved 0.35★)
→ 30 days after: revenue +$286/mo · rating −0.30★ · reviews +39 low · multiple changes
2025-07
⭐
Rating ↓ 2.67 → 2.25 (dropped 0.42★)
→ 30 days after: revenue +$286/mo · rating −0.30★ · reviews +39 low · multiple changes
2025-07
⭐
Rating ↓ 3.00 → 2.67 (dropped 0.33★)
→ 30 days after: revenue +$261/mo · rating −0.43★ · reviews +36 low · multiple changes
2025-07
🚀
First tracked snapshot — initial data captured
→ 30 days after: revenue +$261/mo · rating −0.43★ · reviews +36 low · multiple changes
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 3.94118★ | 34 | 3.94118★ this version |
| 🇧🇷 BR | 3.76923★ | 26 | 3.76923★ this version |
| 🇨🇦 CA | 3.67213★ | 61 | 3.67213★ this version |
| 🇩🇪 DE | 4.06358★ | 173 | 4.06358★ this version |
| 🇫🇷 FR | 4.23529★ | 68 | 4.23529★ this version |
| 🇬🇧 GB | 3.3871★ | 93 | 3.3871★ this version |
| 🇮🇳 IN | 4.0625★ | 16 | 4.0625★ this version |
| 🇯🇵 JP | 3.93333★ | 30 | 3.93333★ this version |
| 🇺🇸 US | 3.84167★ | 480 | 3.84167★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Lumo by Proton: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Proton AG
View all →📦 Portfolio summaryMID studio
9apps·$127K/mocombined
Lead-app heavy — top app contributes 50%
About this analysis
Why medium confidence: 409 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Lumo by Proton make per month?▴
Based on our ML-calibrated revenue forecast, Lumo by Proton earns approximately $1.3K/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 Lumo by Proton?▴
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 Lumo by Proton?▴
Lumo by Proton is published by Proton AG 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 Lumo by Proton's BU Score?▴
Lumo by Proton has a BU Score of 56/100 (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.