Acellus
73
Quality Score
Strong
Acellus
by GoldKey Security Corporation
High confidence
✍️ Bumetric analysis
“
Acellus is an iOS app from GoldKey Security Corporation in the Education category, currently rated 4.5★ across 31,885 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Quality Score is 73: Strong (healthy traction). For a Education app, that means healthy traction. 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 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
189 snapshots on record
Rating
4.5
Reviews
31,885 reviews
Forecast Revenue / mo
$5.0K
Snapshots tracked
189
since Nov 2022
ONE-TIME · BUILD
💰 Estimated build cost
$125K
↳ What it cost to build · not monthly revenue
Likely range $95K – $170K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~2.1y 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 |
| ⚙ Education complexity ×1.20 | +$10K |
| ⚙ 10.9y maintenance × ~1-person team | +$65K |
Total estimate
$125K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$100K
↳ What it would sell for · not monthly revenue
Marketplace range $75K – $125K · 21× MRR multiple
💸
~0.8× 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 |
| 📅 10.9y proven track record | +20% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Education category multiple | +6% |
Final multiple
21× MRR
👥 Estimated audience size
1.9M
Lifetime downloads (US-equivalent)
Monthly active
150K
Daily active
45K
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
| 📲 Education engagement | ~85 installs / rating |
| 📅 10.9y of rating accumulation | -30% |
| 🔁 Education D30 retention | 18% |
| 📍 DAU / MAU stickiness | 0.30 |
DAU / MAU
30% sticky
🛠 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 | 7 MB |
| 🏷 Category context | Education |
| 📦 Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Active
15%
Last shipped 2026-07-04 · 90 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
| 📅 90 days since last update | Healthy release cadence |
Verdict
Active
🔬
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)
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 · 42/100MID TIERFREE (NO MONETIZATION)underperforming peersGrowth Velocity
5.0
Founder Strength
4.1
Product Quality
7.5
Revenue Strength
3.7
Monetization Maturity
0.5
Defensibility
4.5
Market Position
2.0
Operational Safety
6.1
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.5★ across 31,885 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: Moderate — bug mentions above category norm, rating drift -1.60 ★ (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 = $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 9 of 9 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Mid install base (31,885 ratings)METRIC | +$5,500 | |
| Excellent rating (4.5★)METRIC | +$2,200 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| Mature app (10y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Single-language (English only)METRIC | −$400 |
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 · v3.1.8
This update adds support for Acellus ID Cards and performance improvements.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Acellus
- Developer
- GoldKey Security Corporation
- Bundle ID
- com.goldkey.Acellus
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $5.0K/mo
- Top-grossing rank
- Outside top 100 in US Education
- 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.
📈Ratings growth31,964 ratings+6759% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (0 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.
🚀Update Frequency · Releases per Quarter2 releases tracked
🚀Version Release Timeline2 releases tracked
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
Every student learns differently. Acellus meets them where they are — with personalized, video-based K-12 instruction used by over one million students across every U.S. state.
Short video lessons introduce each concept, followed by practice problems that adapt to how your student is progressing. The result: a dynamic learning experience built around the individual, not the classroom average.
Learn at Their Own Pace
Students work independently through concepts, with personalized instruction that helps them truly master each one before moving on.
Stay in the Loop… View full description on the official store →
Short video lessons introduce each concept, followed by practice problems that adapt to how your student is progressing. The result: a dynamic learning experience built around the individual, not the classroom average.
Learn at Their Own Pace
Students work independently through concepts, with personalized instruction that helps them truly master each one before moving on.
Stay in the Loop… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 7 MB🔞 4+📱 iOS 16.4+🔖 v3.1.8🔄 updated 3mo ago🌐 EN📂 Education💰 Paid🚀 Launched 2015 (10y old)
📅
What Worked™ · Development Pipeline
16 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 →
2026-07
🔧
Shipped update — v3.1.7 → v3.1.8
→ 30 days after: reviews +27 high confidence
2026-05
⭐
Rating ↑ 2.82 → 4.50 (improved 1.68★)
→ 30 days after: reviews +18 high confidence
2026-05
📈
Crossed 1,000 ratings — social-proof flywheel kicking in
→ 30 days after: reviews +18 high confidence
2026-03
⭐
Rating ↓ 4.50 → 2.82 (dropped 1.68★)
2026-03
📈
Crossed 500 ratings — social-proof flywheel kicking in
2026-03
⭐
Rating ↑ 2.82 → 4.50 (improved 1.68★)
2023-07
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: rating −0.07★ · reviews +10 high confidence
2023-07
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: rating +0.07★ · reviews +6 high confidence
2023-02
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: rating +0.09★ · reviews +11 high confidence
2023-01
⭐
Rating ↓ 4.05 → 3.49 (dropped 0.56★)
→ 30 days after: reviews +16 high confidence
2022-12
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: rating −0.56★ · reviews +15 high confidence
2022-12
⭐
Rating ↓ 4.25 → 3.89 (dropped 0.36★)
→ 30 days after: rating +0.05★ · reviews +14 medium · co-occurring
2022-12
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: rating +0.05★ · reviews +14 medium · co-occurring
2022-11
🚀
First tracked snapshot — initial data captured
→ 30 days after: rating +0.05★ · reviews +14 low · multiple changes
2022-11
⭐
Rating ↓ 5.00 → 3.50 (dropped 1.50★)
→ 30 days after: rating +0.05★ · reviews +14 medium · co-occurring
2022-11
🚀
First tracked snapshot — initial data captured
→ 30 days after: rating +0.05★ · reviews +14 medium · co-occurring
🗣
Voice of Customer
Based on 127 reviews across 2 markets● 56% positive · ● 8% neutral · ● 36% negative · Rating drift: -1.60★ (declining — recent 50: 2.9★ vs lifetime: 4.5★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇨🇦 CA
+0.24
🇺🇸 US
+0.11
Top praise themes
watching video ×3 school ×19 program ×9 learning ×9 because ×8 don ×8 doing ×7 student ×6
Top complaint themes
new update ×6 hate school ×4 online school ×3 same video ×3 doesn work ×3 power homeschool ×3 extremely slow ×3 help video ×3
Risk signals
Bug mentions: 6%
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 3.88462★ | 26 | 3.88462★ this version |
| 🇧🇷 BR | 4.9★ | 10 | 4.9★ this version |
| 🇨🇦 CA | 4.27126★ | 247 | 4.27126★ this version |
| 🇩🇪 DE | 4.63636★ | 11 | 4.63636★ this version |
| 🇫🇷 FR | 5★ | 4 | 5★ this version |
| 🇬🇧 GB | 4.18605★ | 43 | 4.18605★ this version |
| 🇮🇳 IN | 4.88889★ | 18 | 4.88889★ this version |
| 🇯🇵 JP | 4.41026★ | 39 | 4.41026★ this version |
| 🇺🇸 US | 4.48719★ | 31,983 | 4.48719★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Acellus: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
About this analysis
Why high confidence: 31,885 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does Acellus make per month?▴
Based on our ML-calibrated revenue forecast, Acellus earns approximately $5.0K/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 Acellus profitable?▴
With estimated build cost $125K and monthly revenue $5.0K, Acellus looks break-even-grade — payback period sits around 2.1 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does Acellus have?▴
Estimated audience: ~1.9M lifetime downloads, ~150K monthly active users, and ~45K 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 Acellus?▴
Browse the full Education 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 Acellus built with?▴
Our heuristic places Acellus 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 Acellus still actively maintained?▴
Maintenance status: Active (15% abandonment risk). Last shipped version was 3 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Acellus sell for?▴
Estimated acquisition value: $100K (marketplace range $75K – $125K). Calculated as 21× 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 Acellus last updated?▴
Acellus last shipped a new version on 2026-07-04 — 3 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Acellus?▴
Acellus is published by GoldKey Security Corporation 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 Acellus's BU Score?▴
Acellus has a BU Score of 73/100 (Strong). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.