Calcular, Mental Arithmetik
0
Quality Score
Niche
Calcular, Mental Arithmetik
Low confidence
✍️ bumetric analysis
“
Calcular, Mental Arithmetik is an iOS app from Pierre Stanislas in the News category, currently rated — across few ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.
Quality Score is 0: Niche (micro-niche or pre-traction stage). For a News app, that means micro-niche or pre-traction stage. 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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$60K
↳ What it cost to build · not monthly revenue
Likely range $45K – $80K
$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 |
| ⚙ News complexity ×1.20 | +$10K |
Total estimate
$60K
🔬
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)
Direction
Headwinds: rating drift may slow acquisition
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 · 43/100MID TIERunderperforming peersRevenue Strength
3.7
Product Quality
0.0
Market Position
2.0
Growth Velocity
5.0
Defensibility
6.5
Operational Safety
10.0
Founder Strength
6.3
Monetization Maturity
1.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: None★ across 0 reviews — weak — significant quality concerns.
- 📍 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.
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 3 of 3 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 | |
| Established app (6y old)METRIC | +$800 | |
| Localized (7 languages)METRIC | +$600 |
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
Completely redesigned from the ground up with Liquid Glass — a stunning new look that feels right at home on iOS 26.
New: Apple Intelligence integration on supported devices delivers live, on-device coaching with personalized tips and encouragement after every session.
New: Apple Intelligence integration on supported devices delivers live, on-device coaching with personalized tips and encouragement after every session.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Calcular, Mental Arithmetik
- Developer
- Pierre Stanislas
- Bundle ID
- com.tenpercent.calcular
- App Store URL
- Open in App Store
- Category
- News
- Content rating
- 4+
- Languages
- EN, FR, DE, IT, JA, ZH, ES
Company
- Website
- pmstani.github.io
- Tagline
- Crafting apps that make a difference
- Description
- Independent iOS and macOS app developer since 2007. Browse a collection of 70+ carefully crafted apps including Safari extensions, productivity tools, health and wellness apps, and more on the Apple App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $86/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
Contacts & Socials data not yet collected for this app.
🌍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
What if you could sharpen your math skills without ever looking at a screen?
Calcular is the first voice-powered mental math trainer that lets you practice arithmetic entirely hands-free. Problems are read aloud, and you answer by speaking — no tapping, no typing, no staring at your phone. True mental math, the way it should be.
Practice while you commute, exercise, cook, or relax. Calcular turns any moment into a brain training session.
KEY FEATURES:
• Fully Voice-Driven Gameplay
Every problem is spoken aloud and your answer is captured through speech recognition.… View full description on the official store →
Calcular is the first voice-powered mental math trainer that lets you practice arithmetic entirely hands-free. Problems are read aloud, and you answer by speaking — no tapping, no typing, no staring at your phone. True mental math, the way it should be.
Practice while you commute, exercise, cook, or relax. Calcular turns any moment into a brain training session.
KEY FEATURES:
• Fully Voice-Driven Gameplay
Every problem is spoken aloud and your answer is captured through speech recognition.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 4 MB🔞 4+📱 iOS 26.0+🔖 v2.0🔄 updated 0d ago🌐 EN, FR, DE, IT, JA +2📂 News💰 Paid
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 0★ | 0 | — |
| 🇬🇧 GB | 0★ | 0 | — |
| 🇩🇪 DE | 0★ | 0 | — |
| 🇫🇷 FR | 4.25★ | 4 | 4.25★ this version |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇨🇦 CA | 0★ | 0 | — |
| 🇦🇺 AU | 0★ | 0 | — |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
Track this app’s revenue
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📝 Description
95
BU Score · Transcendent
More by Pierre Stanislas
View all →📦 Portfolio summaryINDIE studio
7apps·$6K/mocombined
✓ Diversified — top app contributes 45%; risk spread across portfolio
About this analysis
Why low confidence: only 0 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
Calcular, Mental Arithmetik is a very early-stage iOS app in the news space with weak public traction — only 0 ratings, no founder-verified MRR, and not ranked in any monitored grossing chart. The app appears to be monetised, but public signals are too sparse for a precise revenue estimate.
Bottom line: treat all revenue, audience and acquisition-value numbers on this page as directional only — not founder-verified facts.
❓ Frequently Asked Questions
3 answers · auto-generated from this app's public dataHow much does Calcular, Mental Arithmetik make per month?▴
Low-confidence model estimate. Calcular, Mental Arithmetik has only 0 App Store ratings, so our revenue model has very little signal to work with — treat the ~$86/mo figure as directional only, not a verified MRR. No founder-verified revenue data is available for this app. See methodology for the formula and confidence bands.
What apps are like Calcular, Mental Arithmetik?▴
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 Calcular, Mental Arithmetik?▴
Calcular, Mental Arithmetik is published by Pierre Stanislas 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.