📝 About this app
Fluency is a simple, easy to use fluency calculator that quickly and accurately measures syllables per minute and the percentage of syllables stuttered. This tool is great for speech pathologists or parents of children with disfluency.
Basic Mode (Portrait):
- Count syllables and stutters
Advanced Mode (Landscape):
- Specific disfluency counting options (word, sound, and phrase repetition, block, prolongation)
Basic Mode (Portrait):
- Count syllables and stutters
Advanced Mode (Landscape):
- Specific disfluency counting options (word, sound, and phrase repetition, block, prolongation)
30
Quality Score
Emerging
Fluency
✍️ bumetric analysis
“
Fluency is an iOS app from Chris Lang in the Education category, currently rated 2.6★ across 9 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 30: Emerging (early traction worth watching). For a Education app, that means early traction worth watching. 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.
💰 Revenue · today and ahead
Today
$1.3K/mo
In 12 months
$1.1K – $4.1K
In 24 months
$1.1K – $9.6K
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
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
💰 Estimated build cost
$105K
Likely range $80K – $140K
$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 |
| ⚙Education complexity ×1.20 | +$10K |
| ⚙7.5y maintenance × ~1-person team | +$45K |
Total estimate$105K
🛠 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
Likely abandoned
95%
Last shipped 2020-05-17 · 2196 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
| 📅6y+ since last update | Likely abandoned |
| 👥Small user base (9 ratings) + 7.5y old | +10% (solo-project pattern) |
VerdictLikely abandoned
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.3K/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
$1.1K – $2.6K
12 months
$1.1K – $4.1K
24 months
$1.1K – $9.6K
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 · 31/100INDIE TIERlimited signalRevenue Strength
3.1
Product Quality
2.0
Market Position
2.0
Growth Velocity
5.0
Defensibility
3.9
Operational Safety
5.0
Founder Strength
2.9
Monetization Maturity
1.0
- 💰 Revenue: Modest — $524 - $3278/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 2.56★ across 9 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 2196d ago — possibly dormant.
- ⚠️ Risk: Elevated — dormant (2196d since update).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 18-32× monthly = $23K-$41K.
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 | |
| Below-average rating (2.6★)METRIC | −$1,500 | |
| Established app (7y old)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (9 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 →💾 7 MB🔞 4+📱 iOS 12.0+🔖 v3.0🔄 updated 6y ago🌐 EN📂 Education💰 Paid🚀 Launched 2018 (7y old)
🆕 What's New · v3.0
Dark Mode!
- Full dark mode support is here after sneaking in previously
Minor bug fixes, feedback and support link update.
- Full dark mode support is here after sneaking in previously
Minor bug fixes, feedback and support link update.
📅
What Worked™ · Development Pipeline
3 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 →
2023-10
⭐
Rating ↓ 3.50 → 2.67 (dropped 0.83★)
2021-06
⭐
Rating ↑ 3.00 → 3.50 (improved 0.50★)
2020-04
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 2.55555★ | 9 | 2.55555★ this version |
| 🇬🇧 GB | 3★ | 2 | 3★ this version |
| 🇩🇪 DE | 0★ | 0 | — |
| 🇫🇷 FR | 0★ | 0 | — |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇨🇦 CA | 4★ | 1 | 4★ this version |
| 🇦🇺 AU | 2.6★ | 5 | 2.6★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Fluency
- Developer
- Chris Lang
- Bundle ID
- au.com.christopherlang.Fluency
- 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
- 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 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.
⭐Recent App Store Reviews2 latest · avg 3.5★ · 0% 5★ · 0% 1★
5★0 (0%)
4★1 (50%)
3★1 (50%)
2★0 (0%)
1★0 (0%)
+0 ratings/week
Praise: love ×1 great ×1 perfect ×1
Top positive
★★★☆☆ Advanced mode
Hello
I can’t find the way how to switch to the advanced mode. In this tool I am not able to use the landscape mode. Can you tell me how I can switch between simple and advanced mode.
Thanks…
★★★★☆ Great Resource!
Almost perfect! Would love a category for interjections (e.g., um, like, uh), but otherwise, super easy to use. Just know that errors count as syllables (which I love) so don’t double count syllables like I initially did! Love the haptic fe…
Top negative
★★★☆☆ Advanced mode
Hello
I can’t find the way how to switch to the advanced mode. In this tool I am not able to use the landscape mode. Can you tell me how I can switch between simple and advanced mode.
Thanks…
★★★★☆ Great Resource!
Almost perfect! Would love a category for interjections (e.g., um, like, uh), but otherwise, super easy to use. Just know that errors count as syllables (which I love) so don’t double count syllables like I initially did! Love the haptic fe…
📈Ratings growth9 ratings+800% lifetimeShow 3-year history estimate ▾
Tracked (4 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.
Full revenue analysis
Read the article-style breakdown for Fluency: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.