Files To SD Card or USB Drive
80
Quality Score
Excellent
βοΈ Bumetric analysis
“
Files To SD Card or USB Drive is an Android app from Michal BukΓ‘Δek in the Tools category, currently rated 4.7β across 382,581 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 80: Excellent (strong product-market fit). For a Tools app, that means strong product-market fit. 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.
π° Monthly revenue Β· now vs forecast
β Right now
$700K
per month
β
12-mo forecast
$741K β $1141K
per month
β
24-mo forecast
$886K β $1645K
per month
BIG tier
π‘ Grow this revenue
Free AI audit of this appβs store listing
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5Γ organic installs
π Performance Tracking LIVE
5 snapshots on record
Rating
4.7
Reviews
382,581 reviews
Forecast Revenue / mo
$700K
Snapshots tracked
5
since May 2026
ONE-TIME Β· BUILD
π° Estimated build cost
$135K
β³ What it cost to build Β· not monthly revenue
Likely range $100K β $180K
$25K Β· MVP floor
$100K Β· indie scale
$500K+ Β· studio build
π
Pays back in under a month at current MRR
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age Γ team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 𧱠MVP baseline (design + 1-store ship) | +$28K |
| π± 5 unique screens Γ $4.5K | +$22K |
| β Tools complexity Γ0.90 | $-5049 |
| π Cross-platform reach (iOS + Android) | +$24K |
| β 11.1y maintenance Γ ~1-person team | +$66K |
Total estimate
$135K
ONE-TIME Β· EXIT VALUE
π΅ Estimated acquisition value
$13.0M
β³ What it would sell for Β· not monthly revenue
Marketplace range $10.0M β $17.0M Β· 19Γ MRR multiple
πΈ
~96Γ return on build cost
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
| πΊ Ad-supported base | 15Γ MRR |
| π 11.1y proven track record | +20% |
| β β rating β₯ 4.4 (solid) | +8% |
| π· Tools category multiple | -8% |
| β Mature user base (100K+ ratings) | +5% |
Final multiple
19Γ MRR
π₯ Estimated audience size
50.5M
Lifetime downloads (US-equivalent)
Monthly active
5.0M
Daily active
905K
Synthetic estimate from ratings Γ category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent β true global audience can be 5-10Γ larger for international apps. Full math + source list on /methodology.
How we sized it
| π² Tools engagement | ~190 installs / rating |
| π 11.1y of rating accumulation | -30% |
| π Tools D30 retention | 22% |
| π DAU / MAU stickiness | 0.18 |
DAU / MAU
18% sticky
π Estimated tech stack
π€
Native Android (Kotlin)
High confidence Β· 80%
Also possible
Flutter
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries β 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
| π· Category context | Tools |
| π¦ Compact Android bundle | β Native Kotlin |
π Maintenance status
Active
15%
Last shipped 2026-08-22 Β· 48 days ago
0 Β· Active
50 Β· At risk
100 Β· 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 β a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| π 48 days since last update | Healthy release cadence |
Verdict
Active
π¬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$700K/mo Β· ML-estimated from 234 triggers
Growth rate
+2.5% MoM Β· BIG tier baseline (compound monthly)
6 months
$690K β $933K
12 months
$741K β $1.1M
24 months
$886K β $1.6M
Compound growth at +2.5% MoM (tier baseline for BIG). Range widens with horizon β typical noise band Β±15% at 6mo.. Ranges widen with horizon β distant futures carry more uncertainty.
π
BU Investment Matrix
Mixed signals Β· 55/100BIG TIERcompetitive but cautiousGrowth Velocity
5.0
Founder Strength
5.5
Product Quality
9.3
Revenue Strength
5.8
Monetization Maturity
1.0
Defensibility
7.5
Market Position
0.0
Operational Safety
10.0
- π° Revenue: Healthy β $280K - $1540K/mo Β· BIG tier Β· medium-low confidence, trajectory unclear.
- β Quality: 4.66β across 382,581 reviews β exceptional (top 1% in category).
- π Market: Not yet charting in any of the 9 monitored markets.
- π Growth: Insufficient signal to assess trajectory.
- β οΈ Risk: Low β no material risk signals detected.
π― For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge β otherwise crowded segment.
π΅ For acquirers: Estimated asking range 18-32Γ monthly = $12.6M-$22.4M.
Composite of 8 dimensions computed deterministically from public signals β no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
Range:
π° Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
π¬Forecast Breakdown β 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:
| High install base (382,581 ratings)METRIC | +$12,000 | |
| Excellent rating (4.7β )METRIC | +$2,200 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (11y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| Ad-supported / freemiumMETRIC | +$600 |
METRIC = structural app data Β· REVIEW = mined from user reviews Β· β VERIFIED = Stripe-verified anchor (TrustMRR)
π Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
β Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
Profile & Insights
Everything we know β and don't β about this app and its company.
Identification
- App name
- Files To SD Card or USB Drive
- Developer
- Michal BukΓ‘Δek
- Bundle ID
- cz.bukacek.filestosdcard
- App Store URL
- Open in App Store
- Category
- Tools
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- www.filestosdcard.com
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $700K/mo
- Top-grossing rank
- Not found
- 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.
πUpdate Frequency Β· Releases per Quarter5 releases tracked
πVersion Release Timeline5 releases tracked
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" β additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
π About this app
<u>Free up space on your phone in seconds!</u> π
Files To SD Card makes it incredibly easy to <u>transfer files from internal storage to an SD card or USB flash drive</u>. Move photos, videos, music, downloads, and documents with just a few taps and keep your device fast and organized. Stop worrying about low storage space β simply move your files and enjoy a faster phone.
π <u>Why Users Love Files To SD Card</u>
β‘ <u>Fast File Transfers</u>
Move large files from internal storage to your microSD card or USB flash drive (OTG) quickly and easily.β¦ View full description on the official store β
Files To SD Card makes it incredibly easy to <u>transfer files from internal storage to an SD card or USB flash drive</u>. Move photos, videos, music, downloads, and documents with just a few taps and keep your device fast and organized. Stop worrying about low storage space β simply move your files and enjoy a faster phone.
π <u>Why Users Love Files To SD Card</u>
β‘ <u>Fast File Transfers</u>
Move large files from internal storage to your microSD card or USB flash drive (OTG) quickly and easily.β¦ View full description on the official store β
π v1.70231π updated 1mo agoπ Toolsπ° FreeπΊ Ad-supportedπ Launched 2015 (11y old)
π
What Workedβ’ Β· Development Pipeline
6 EVENTS TRACKEDDetected changes in this app over its tracked lifetime β each event links cause (what changed) to effect (what moved). Sorted newest first.See full history βVersion history β
2026-08
π§
Shipped update β v1.70229 β v1.70231
β 30 days after: reviews +258 high confidence
2026-08
π§
Shipped update β v1.70228 β v1.70229
β 30 days after: reviews +457 high confidence
2026-07
πΈ
Refreshed store screenshots β 8 of 8 updated
β 30 days after: reviews +199 high confidence
2026-06
π§
Shipped update β v1.70225 β v1.70228
β 30 days after: reviews +135 high confidence
2026-06
π§
Shipped update β v1.70223 β v1.70225
β 30 days after: reviews +452 medium Β· co-occurring
2026-05
π
First tracked snapshot β initial data captured
β 30 days after: reviews +317 high confidence
πΈ
Store Page History
8 SCREENSHOT CHANGESEvery time a developer swaps a store screenshot we archive both versions. Compare side-by-side to see what messaging / visuals changed.
iPhone screenshots
Slot 1
2 ver.
2 ver.
2026-05-06
2026-07-12
Slot 2
2 ver.
2 ver.
2026-05-06
2026-07-12
Slot 3
2 ver.
2 ver.
2026-05-06
2026-07-12
Slot 4
2 ver.
2 ver.
2026-05-06
2026-07-12
Slot 5
2 ver.
2 ver.
2026-05-06
2026-07-12
Slot 6
2 ver.
2 ver.
2026-05-06
2026-07-12
π
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π Description
95
BU Score Β· Transcendent
Full revenue analysis
Read the article-style breakdown for Files To SD Card or USB Drive: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Michal BukΓ‘Δek
View all βπ¦ Portfolio summaryMID studio
11appsΒ·$723K/mocombined
β Concentrated β top app contributes 97% of combined revenue (single-app dependency)
About this analysis
Why high confidence: 382,581 ratings Β· no founder-verified revenue (model estimate only).
β Frequently Asked Questions
10 answers Β· auto-generated from this app's public dataHow much does Files To SD Card or USB Drive make per month?β΄
Based on our ML-calibrated revenue forecast, Files To SD Card or USB Drive earns approximately $700K/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 Files To SD Card or USB Drive profitable?β΄
With estimated build cost $135K and monthly revenue $700K, Files To SD Card or USB Drive looks highly profitable β pays back its build investment in under a month at the current run-rate. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does Files To SD Card or USB Drive have?β΄
Estimated audience: ~50.5M lifetime downloads, ~5.0M monthly active users, and ~905K daily active users. Derived from ratings count Γ category installs-per-rating Γ age decay. US-storefront-equivalent β global audience can be 5-10Γ larger for internationally-distributed apps.
What apps are like Files To SD Card or USB Drive?β΄
Browse the full Tools 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 Files To SD Card or USB Drive built with?β΄
Our heuristic places Files To SD Card or USB Drive on the Native Android (Kotlin) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is Files To SD Card or USB Drive still actively maintained?β΄
Maintenance status: Active (15% 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 Files To SD Card or USB Drive sell for?β΄
Estimated acquisition value: $13.0M (marketplace range $10.0M β $17.0M). Calculated as 19Γ 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 Files To SD Card or USB Drive last updated?β΄
Files To SD Card or USB Drive last shipped a new version on 2026-08-22 β 1 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Files To SD Card or USB Drive?β΄
Files To SD Card or USB Drive is published by Michal BukΓ‘Δek on the Google Play 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 Files To SD Card or USB Drive's BU Score?β΄
Files To SD Card or USB Drive has a BU Score of 80/100 (Excellent). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.