30
Quality Score
Emerging
Fluency
Why low confidence: only 9 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
✍️ bumetric analysis
“
ℹ️ Honest verdict for low-signal apps
Fluency is a early-stage iOS app in the education space with weak public traction — only 9 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. Treat all revenue, audience and acquisition-value numbers below as directional only — not founder-verified facts.
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
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD💰 Estimated build cost
$105K
↳ What it cost to build · not monthly revenue
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 · 2197 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 signalGrowth Velocity
5.0
Founder Strength
2.9
Product Quality
2.0
Revenue Strength
3.1
Monetization Maturity
1.0
Defensibility
3.9
Market Position
2.0
Operational Safety
5.0
- 💰 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)
📝 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)
🆕 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 |
|---|---|---|---|
| 🇦🇺 AU | 2.6★ | 5 | 2.6★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇨🇦 CA | 4★ | 1 | 4★ this version |
| 🇩🇪 DE | 0★ | 0 | — |
| 🇫🇷 FR | 0★ | 0 | — |
| 🇬🇧 GB | 3★ | 2 | 3★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
| 🇯🇵 JP | 0★ | 0 | — |
| 🇺🇸 US | 2.55555★ | 9 | 2.55555★ this version |
🔔
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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
- 🇦🇺#96 /99
- 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 (5 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution1 of 9 markets
🇦🇺
AU
Top-grossing rank: #96 / 99
Other markets
Outside top 100
in US, GB, DE, FR, JP, CA, AU, BR, IN
in US, GB, DE, FR, JP, CA, AU, BR, IN
This app currently ranks in only one of the 9 markets we monitor. Niche or regional apps often launch this way before global rollout. Rankings update daily.
📊Category Rank Trajectory#96 now · best #87 · worst #99
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
💰Pricing History$0.00 → $2.99 (+0%)
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.
❓ Frequently Asked Questions
7 answers · auto-generated from this app's public dataHow much does Fluency make per month?▾
Low-confidence model estimate. Fluency has only 9 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 Fluency?▾
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 Fluency built with?▾
Our heuristic places Fluency 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 Fluency still actively maintained?▾
Maintenance status: Likely abandoned (95% abandonment risk). Last shipped version was 6+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
When was Fluency last updated?▾
Fluency last shipped a new version on 2020-05-17 — more than 6 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Fluency?▾
Fluency is published by Chris Lang 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 Fluency's BU Score?▾
Fluency has a BU Score of 30/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.