Vertical Calendar.
54
Quality Score
Solid
Vertical Calendar.
Low confidence
✍️ bumetric analysis
“
Vertical Calendar. is an iOS app from Unitac in the Productivity category, currently rated 4.0★ across 6 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 54: 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
$1.5K
per month
→
12-mo forecast
$1.3K – $4.6K
per month
→
24-mo forecast
$1.2K – $10.6K
per month
INDIE tierFREE
💡 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
$145K
↳ What it cost to build · not monthly revenue
Likely range $110K – $195K
$25K · MVP floor$100K · indie scale$500K+ · studio build
📈Pays back in ~1.2y 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 |
| ⚙Productivity complexity ×1.10 | +$5K |
| ⚙14.9y maintenance × ~1-person team | +$89K |
Total estimate$145K
ONE-TIME · EXIT VALUE💵 Estimated acquisition value
$175K
↳ What it would sell for · not monthly revenue
Marketplace range $150K – $250K · 18× MRR multiple
💸~1.2× build cost (break-even+)
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 |
| 📅14.9y proven track record | +20% |
| 🏷Productivity category multiple | +8% |
| ⭐Small user base (<1K ratings) | -8% |
Final multiple18× MRR
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
High confidence · 80%
Also possible
Native iOS (SwiftUI)
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
| 📦App bundle size | 5 MB |
| 🏷Category context | Productivity |
| 📦Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Likely abandoned
95%
Last shipped 2020-11-02 · 2031 days ago
0 · Active50 · At risk100 · 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
| 📅5y+ since last update | Likely abandoned |
| 👥Small user base (6 ratings) + 14.9y old | +10% (solo-project pattern) |
| •15y old + 1y+ no update | +5% (API deprecation drift) |
VerdictLikely abandoned
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.5K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition, review-mined risks present
6 months
$1.2K – $2.9K
12 months
$1.3K – $4.6K
24 months
$1.2K – $10.6K
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 · 29/100INDIE TIERFREE (NO MONETIZATION)limited signalRevenue Strength
3.2
Product Quality
1.7
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.5
Operational Safety
1.2
Founder Strength
5.0
Monetization Maturity
0.5
- 💰 Revenue: Modest — $583 - $3644/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.0★ across 6 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 2031d ago — possibly dormant.
- ⚠️ Risk: High — scam/fraud mentions detected, bug mentions above category norm, rating drift -0.38 ★ (recent 50 vs lifetime).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 12-22× monthly = $17K-$32K. Portfolio play ($10K/mo combined) commands premium. Discount applied for operational risk..
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 5 of 5 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 | |
| 5 starREVIEW | +$1,800 | |
| Mature app (14y old)METRIC | +$1,500 | |
| Good rating (4.0★)METRIC | +$800 | |
| Pre-traction phase (6 ratings)METRIC | −$300 |
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.
App Specs
🔐 Own this app? Claim & verify MRR →💾 5 MB🔞 4+📱 iOS 8.0+🔖 v2.032🔄 updated 5y ago🌐 EN, JA📂 Productivity💰 Paid🚀 Launched 2011 (14y old)
📝 About this app
Vertical Calendar is a unique at a glance monthly calendar application for your iPhone or iPod touch .
It is the top calendar app on the Japanese App Store .
------Customer Review----------------------
"A unique month at a glance calendar that allows you see all your calendars put together in one nice overview.
No little dots or cut-off words.
Flick for next month.
I like it!"
-iron bridge, customer
-------------------------------------------
You can customize the background color and icon for each day.
●Main Features… View full description on the official store →
It is the top calendar app on the Japanese App Store .
------Customer Review----------------------
"A unique month at a glance calendar that allows you see all your calendars put together in one nice overview.
No little dots or cut-off words.
Flick for next month.
I like it!"
-iron bridge, customer
-------------------------------------------
You can customize the background color and icon for each day.
●Main Features… View full description on the official store →
🆕 What's New · v2.032
support iOS 14
📅
What Worked™ · Development Pipeline
5 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 →
2026-03
⭐
Rating ↑ 3.41 → 4.30 (improved 0.89★)
2014-05
📈
Crossed 10 ratings — social-proof flywheel kicking in
2012-01
⭐
Rating ↑ 3.00 → 3.67 (improved 0.67★)
2011-10
⭐
Rating ↑ 1.00 → 3.00 (improved 2.00★)
2011-09
🚀
First tracked snapshot — initial data captured
🗣
Voice of Customer
Based on 132 reviews across 7 markets● 34% positive · ● 44% neutral · ● 22% negative · Rating drift: -0.38★ (declining — recent 50: 3.62★ vs lifetime: 4.0★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇨🇦 CA
+0.87
🇺🇸 US
+0.37
🇦🇺 AU
+0.28
🇫🇷 FR
+0.25
🇬🇧 GB
+0.23
🇯🇵 JP
+0.00
🇩🇪 DE
-0.31
Top praise themes
alle kalender ×3 wenn man ×3 lässt sich ×3 cinquième étoile ×3 die ×22 und ×15 month ×13 den ×12
Top complaint themes
waste money ×6 doesn't work ×6 ios crashes ×3 can't add ×3 don't ×8 phone ×4 save ×4 update ×3
Risk signals
Refund mentions: 0.8% Bug mentions: 6% Fraud / scam mentions: 0.8%
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 4★ | 6 | 4★ this version |
| 🇬🇧 GB | 4.16667★ | 6 | 4.16667★ this version |
| 🇩🇪 DE | 4.25★ | 8 | 4.25★ this version |
| 🇫🇷 FR | 4★ | 3 | 4★ this version |
| 🇯🇵 JP | 4.10909★ | 110 | 4.10909★ this version |
| 🇨🇦 CA | 4★ | 1 | 4★ this version |
| 🇦🇺 AU | 3★ | 2 | 3★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 1★ | 1 | 1★ this version |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Vertical Calendar.
- Developer
- Unitac
- Bundle ID
- com.unitac.verticalcalendar
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- EN, JA
Company
- Website
- verticalcalendar.seesaa.net
- Tagline
- Not found
- Description
- Not found
- 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
- $10.4K/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.
⭐Recent App Store Reviews16 latest · avg 3.38★ · 43.8% 5★ · 18.8% 1★
5★7 (44%)
4★1 (6%)
3★2 (12%)
2★3 (19%)
1★3 (19%)
+0 ratings/week
Praise: love ×5 great ×3 perfect ×1 favorite ×1 best ×1Complaints: crash ×1 terrible ×1 scam ×1
Top positive
★★★★★ Love it
Please add rotation for iPad and expand to a year - at least…
★★★★★ My favorite calendar app
Great app... Keeps track of all my rental properties.
Love seeing the entire month, makes it simple and easy to read in an instant.
Super easy and exactly what I need.
Keep up the good work.…
Top negative
★☆☆☆☆ Terrible App!!
Can find setting to have calender in Lock screen! Waste of Money!…
★☆☆☆☆ Didn't even sync with google calendar. Absolutely no way to contact company. A complete rip off!!!
Didn't work. Cation may be a scam!!!!…
📈Ratings growth6 ratings+500% lifetimeShow 3-year history estimate ▾
Tracked (18 weeks) Pre-tracking estimate (36 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.
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.
📝 Description
95
BU Score · Transcendent
❓ Frequently Asked Questions
Who is the author of The ?
The author is , a prominent figure in the study of occult philosophy and esoteric traditions.
What is the main theme of the book?
The main theme is the esoteric interpretation of the Book of Revelation, focusing on the mystical and symbolic meanings hidden within the text.
Why is this book important for modern esoteric seekers?
This book is important because it bridges ancient wisdom with contemporary spiritual practices, providing valuable insights into the esoteric traditions that have influenced Western spirituality.
Similar apps in Productivity
About this analysis
Why low confidence: only 6 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
Vertical Calendar. is a early-stage iOS app in the productivity space with weak public traction — only 6 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
7 answers · auto-generated from this app's public dataHow much does Vertical Calendar. make per month?▴
Low-confidence model estimate. Vertical Calendar. has only 6 App Store ratings, so our revenue model has very little signal to work with — treat the ~$10K/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 Vertical Calendar.?▴
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.
What is Vertical Calendar. built with?▴
Our heuristic places Vertical Calendar. on the Native iOS (Swift / UIKit) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Native iOS (SwiftUI).
Is Vertical Calendar. still actively maintained?▴
Maintenance status: Likely abandoned (95% abandonment risk). Last shipped version was 5+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was Vertical Calendar. last updated?▴
Vertical Calendar. last shipped a new version on 2020-11-02 — more than 5 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Vertical Calendar.?▴
Vertical Calendar. is published by Unitac 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 Vertical Calendar.'s BU Score?▴
Vertical Calendar. has a BU Score of 54/100 (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.