How much does Thirty One | 31 make per month?

Based on our ML-calibrated revenue forecast, Thirty One | 31 earns approximately $500/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 Thirty One | 31 profitable?

With estimated build cost $165K and monthly revenue $500, Thirty One | 31 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.

How many users does Thirty One | 31 have?

Estimated audience: ~27K lifetime downloads, ~2K monthly active users, and ~630 daily active users. Derived from ratings count × category installs-per-rating × age decay. US-storefront-equivalent — global audience can be 5-10× larger for internationally-distributed apps.

What apps are like Thirty One | 31?

Browse the full Card 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 Thirty One | 31 built with?

Our heuristic places Thirty One | 31 on the Native Android (Kotlin) stack (Medium confidence, 55%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.

Is Thirty One | 31 still actively maintained?

Maintenance status: At risk (60% abandonment risk). Last shipped version was 11 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.

How much would Thirty One | 31 sell for?

Estimated acquisition value: $5.0K (marketplace range $5.0K – $10K). Calculated as 14× 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 Thirty One | 31 last updated?

Thirty One | 31 last shipped a new version on 2025-10-18 — 11 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.

Who makes Thirty One | 31?

Thirty One | 31 is published by Hensch-IT 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 Thirty One | 31's BU Score?

Thirty One | 31 has a BU Score of 53/100 (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.

Thirty One | 31

Quality Score

Solid

Thirty One | 31

Name: Thirty One | 31 — app revenue, audience, build cost & risk profile
Creator: Bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Thirty One | 31 revenue, Thirty One | 31 app analytics, mobile app revenue estimate, Card revenue, Android app revenue

by Hensch-IT

Medium confidence

4.1 Google Play rating

✍️ Bumetric analysis

“

Thirty One | 31 is an Android app from Hensch-IT in the Card category, currently rated 4.1★ across 265 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.

Quality Score is 53: Solid (established niche player). For a Card 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

$500

per month

→

12-mo forecast

$437 – $1575

per month

→

24-mo forecast

$405 – $3644

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

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Typical impact: +2-5× organic installs

📊 Performance Tracking LIVE

1 snapshots on record

idle

Rating

4.1

Reviews

265 reviews

Forecast Revenue / mo

$500

Snapshots tracked

since Jul 2026

ONE-TIME · BUILD 💰 Estimated build cost

$165K

↳ What it cost to build · not monthly revenue

Likely range $125K – $225K

$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
⚙ Card complexity ×1.50	+$25K
🌐 Cross-platform reach (iOS + Android)	+$41K
⚙ 7.9y maintenance × ~1-person team	+$47K

Total estimate $165K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$5K

↳ What it would sell for · not monthly revenue

Marketplace range $5K – $10K · 14× MRR multiple

💸 ~0.0× 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
📅 7.9y proven track record	+20%
🏷 Card category multiple	-15%
⭐ Small user base (<1K ratings)	-8%

Final multiple 14× MRR

👥 Estimated audience size

27K

Lifetime downloads (US-equivalent)

Monthly active

2.1K

Daily active

630

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

📲 Card engagement	~150 installs / rating
📅 7.9y of rating accumulation	-30%
🔁 Card D30 retention	12%
📍 DAU / MAU stickiness	0.30

DAU / MAU 30% sticky

🛠 Estimated tech stack

🤖

Native Android (Kotlin)

Medium confidence · 55%

Also possible

Flutter

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

🏷 Category context	Card
📦 Tiny game bundle	→ Native 2D engine

💀 Maintenance status

At risk

60%

Last shipped 2025-10-18 · 354 days ago

0 · Active 50 · At risk 100 · 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

📅 11 months since last update	Concerning gap
👥 Small user base (265 ratings) + 7.9y old	+10% (solo-project pattern)

Verdict At risk

🔬

How we forecast this revenue

LOW CONFIDENCE

Baseline

$500/mo · ML-estimated from 234 triggers

Growth rate

+6.0% MoM · INDIE tier baseline (compound monthly)

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 · 40/100INDIE TIERlimited signal

Growth Velocity

5.0

Founder Strength

2.8

Product Quality

5.7

Revenue Strength

2.7

Monetization Maturity

1.0

Defensibility

5.5

Market Position

0.0

Operational Safety

9.0

💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
⭐ Quality: 4.08★ across 265 reviews — below category median.
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: last update 354d ago — slow cadence.
⚠️ 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 = $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

MODEL

Revenue 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 4 of 4 triggers

Our ML model uses 200+ signals from public data. These are the most influential for this app:

Good rating (4.1★)METRIC		+$800
Established app (7y old)METRIC		+$800
Ad-supported / freemiumMETRIC		+$600
Early-stage install base (265 ratings)METRIC		+$400

METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📥 Estimated Downloads / week

PROXY · ratings × 50/wk —

Industry-rule estimate (Sensor Tower / data.ai): one weekly install ≈ 50 new ratings. Solid points = tracked snapshots · faded line = pre-tracking model backfill.

📈 Reviews Growth

LIVE

Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE

Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY

Each bar shows a tracked update and the metric delta from the previous snapshot.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name: Thirty One | 31
Developer: Hensch-IT
Bundle ID: com.HenschIT.Schwimmen
App Store URL: Open in App Store
Category: Card
Content rating: Not found
Languages: Not found

Company

Website: hensch-it.de
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: $500/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.

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

Play the popular card game Thirty One, also known as knack, Schwimmen or Schnautz, whenever and wherever you want.

Play offline against up to 4 computer-controlled opponents or play with up to three others players online.

-Play in public or private rooms

-Customize the rules to your liking

-Not enugh time to end the game? No problem. Close the app and resum the game later.

The rules are simply explained:

Each player gets three cards. The goal is it to have as many points in his hand as possible. For cards with the same color, the points add up. Aces give 11 points. Face cards 10.… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v1.11.3🔄 updated 11mo ago📂 Card💰 Free🚀 Launched 2018 (7y old)

🔔

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📝 Description

BU Score · Transcendent

Full revenue analysis

Read the article-style breakdown for Thirty One | 31: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.

Read deep-dive →