50
Quality Score
Solid
HachiCalendar2 Pro
Low confidence
✍️ bumetric analysis
“
HachiCalendar2 Pro is an iOS app from 加明 严 in the Productivity category, currently rated 3.3★ across 21 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 50: 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
$871
per month
→
12-mo forecast
$762 – $2745
per month
→
24-mo forecast
$706 – $6351
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
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$150K
↳ What it cost to build · not monthly revenue
Likely range $110K – $200K
$25K · MVP floor$100K · indie scale$500K+ · studio build
📈Pays back in ~4 months 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 |
| ⚙15.9y maintenance × ~1-person team | +$95K |
Total estimate$150K
ONE-TIME · EXIT VALUE💵 Estimated acquisition value
$500K
↳ What it would sell for · not monthly revenue
Marketplace range $400K – $700K · 15× MRR multiple
💸~3.3× 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
| 📺Ad-supported base | 15× MRR |
| 📅15.9y proven track record | +20% |
| ⭐★ rating < 3.5 (weak) | -18% |
| 🏷Productivity category multiple | +8% |
| ⭐Small user base (<1K ratings) | -8% |
Final multiple15× 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 | 26 MB |
| 🏷Category context | Productivity |
| 📦Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Active
15%
Last shipped 2026-05-18 · 7 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
| 📅7 days since last update | Active development |
| 👥Small user base (21 ratings) + 15.9y old | +10% (solo-project pattern) |
VerdictActive
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$871/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$742 – $1.7K
12 months
$762 – $2.7K
24 months
$706 – $6.4K
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 · 34/100INDIE TIERFREE (NO MONETIZATION)limited signalRevenue Strength
2.9
Product Quality
1.1
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.5
Operational Safety
5.7
Founder Strength
5.6
Monetization Maturity
0.5
- 💰 Revenue: Marginal — $348 - $2178/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.29★ across 21 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: dev shipping weekly.
- ⚠️ Risk: Elevated — rating drift -0.81 ★ (recent 50 vs lifetime).
🎯 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 = $15K-$27K. Portfolio play ($36K/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 11 of 11 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 | |
| worth every pennyREVIEW | +$2,000 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Below-average rating (3.3★)METRIC | −$1,500 | |
| Mature app (15y old)METRIC | +$1,500 | |
| Multilingual (12 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| support teamREVIEW | +$900 | |
| Pre-traction phase (21 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 →💾 26 MB🔞 4+📱 iOS 16.1+🔖 v11.5.0🔄 updated 1w ago🌐 EN, FR, DE, IT, JA +7📂 Productivity💰 Paid🚀 Launched 2010 (15y old)
📝 About this app
Your faithful friend, making life more organized.
15 years, over 1 million users.
Contact: hachi.iphone@gmail.com
Scroll endlessly through your past and future.
Turn events into checkable to-dos.
AI helps you create and analyze events naturally.
Floating cards keep countdowns and key dates always in view.
Hachi Calendar combines Calendar + To-Do + AI Assistant + Floating Date Cards into one powerful, seamless interface.
Browse vertically without switching views.
Check off events like tasks.
Let AI create, complete, and analyze your schedule.… View full description on the official store →
15 years, over 1 million users.
Contact: hachi.iphone@gmail.com
Scroll endlessly through your past and future.
Turn events into checkable to-dos.
AI helps you create and analyze events naturally.
Floating cards keep countdowns and key dates always in view.
Hachi Calendar combines Calendar + To-Do + AI Assistant + Floating Date Cards into one powerful, seamless interface.
Browse vertically without switching views.
Check off events like tasks.
Let AI create, complete, and analyze your schedule.… View full description on the official store →
🆕 What's New · v11.5.0
1. Day View and Week View now include a new block layout, making events easier to scan. Tap the button in the lower-right corner to switch styles.
2. AI features enhanced:
- Identify event details from images on the event creation screen.… Full release notes →
2. AI features enhanced:
- Identify event details from images on the event creation screen.… Full release notes →
📅
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 ↑ 3.10 → 3.50 (improved 0.40★)
2019-03
📈
Crossed 50 ratings — social-proof flywheel kicking in
2010-08
📈
Crossed 10 ratings — social-proof flywheel kicking in
2010-07
⭐
Rating ↓ 5.00 → 4.00 (dropped 1.00★)
2010-07
🚀
First tracked snapshot — initial data captured
🗣
Voice of Customer
Based on 192 reviews across 8 markets● 49% positive · ● 35% neutral · ● 16% negative · Rating drift: -0.81★ (declining — recent 50: 2.48★ vs lifetime: 3.29★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇦🇺 AU
+0.71
🇬🇧 GB
+0.70
🇺🇸 US
+0.49
🇨🇦 CA
+0.31
🇫🇷 FR
+0.26
🇯🇵 JP
+0.01
🇧🇷 BR
-0.15
🇩🇪 DE
-0.33
Top praise themes
month view ×7 please add ×7 iphone calendar ×6 color coding ×6 calendar easy ×5 calendar calendar ×4 thank thank ×4 week view ×4
Top complaint themes
week view ×9 new update ×8 new version ×5 please fix ×4 old version ×4 ich die ×3 der kalender ×3 calendar ×34
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3.28571★ | 21 | 3.28571★ this version |
| 🇬🇧 GB | 3.5★ | 2 | 3.5★ this version |
| 🇩🇪 DE | 4★ | 1 | 4★ this version |
| 🇫🇷 FR | 3★ | 2 | 3★ this version |
| 🇯🇵 JP | 3.45591★ | 1,134 | 3.45591★ this version |
| 🇨🇦 CA | 0★ | 0 | — |
| 🇦🇺 AU | 3.66667★ | 3 | 3.66667★ this version |
| 🇧🇷 BR | 3★ | 2 | 3★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- HachiCalendar2 Pro
- Developer
- 加明 严
- Bundle ID
- com.hachi.iScheduleForIOS4
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- EN, FR, DE, IT, JA, KO, RU, ZH, ES, SV, ZH, TR
Company
- Website
- hachi.yimidl.com
- Tagline
- HachiCalendar
- 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
- $36.8K/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 Reviews49 latest · avg 3.04★ · 36.7% 5★ · 40.8% 1★
5★18 (37%)
4★7 (14%)
3★3 (6%)
2★1 (2%)
1★20 (41%)
+1 ratings/week
Praise: love ×15 great ×7 best ×5 awesome ×3 perfect ×2Complaints: hate ×2 terrible ×1 bug ×1
Top positive
★★★★★ Excellent
Works well for me…
★★★★★ Worth it
Best calendar…
Top negative
★☆☆☆☆ Why change?
The change is awful! I lived this calendar because it simple to view and use…now it’s all clogged up with junk…
★☆☆☆☆ Go back!
Liked when could set colors to specific events…
📈Ratings growth21 ratings+5% lifetimeShow 3-year history estimate ▾
Tracked (52 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.
Similar apps in Productivity
About this analysis
Why low confidence: only 21 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
HachiCalendar2 Pro is a small / niche iOS app in the productivity space with weak public traction — only 21 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 HachiCalendar2 Pro make per month?▴
Our model estimates HachiCalendar2 Pro earns roughly $36K/mo, but with only 21 ratings the confidence interval is wide. No founder-verified MRR is available for this app, so this is a model output calibrated against comparable apps in the same category. See methodology for the formula.
What apps are like HachiCalendar2 Pro?▴
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 HachiCalendar2 Pro built with?▴
Our heuristic places HachiCalendar2 Pro 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 HachiCalendar2 Pro still actively maintained?▴
Maintenance status: Active (15% abandonment risk). Last shipped version was 7 days ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was HachiCalendar2 Pro last updated?▴
HachiCalendar2 Pro last shipped a new version on 2026-05-18 — less than a month ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes HachiCalendar2 Pro?▴
HachiCalendar2 Pro is published by 加明 严 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 HachiCalendar2 Pro's BU Score?▴
HachiCalendar2 Pro has a BU Score of 50/100 (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.