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Special Symbols: Keyboards

57
Quality Score
Solid

Special Symbols: Keyboards

Low confidence
4.5 ✍️ Editor
✍️ bumetric analysis

Special Symbols: Keyboards is an iOS app from Marco Petrucci in the Utilities category, currently rated 4.5★ across 2 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.

Quality Score is 57: Solid (established niche player). For a Utilities 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
$1.0K
per month
12-mo forecast
$908 – $3272
per month
24-mo forecast
$841 – $7569
per month
INDIE tier
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📊 Performance Tracking LIVE

Loading…
idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
0
since first record
ONE-TIME · BUILD 💰 Estimated build cost
$45K
What it cost to build · not monthly revenue
Likely range $35K – $60K
$25K · MVP floor $100K · indie scale $500K+ · studio build
📈 Pays back in ~2 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
Utilities complexity ×0.85 $-7575
Total estimate $45K
ONE-TIME · EXIT VALUE 💵 Estimated acquisition value
$250K
What it would sell for · not monthly revenue
Marketplace range $175K – $325K · 13× MRR multiple
💸 ~5.6× 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
★ rating ≥ 4.4 (solid) +8%
🏷 Utilities category multiple -10%
Small user base (<1K ratings) -8%
Final multiple 13× MRR
🔬

How we forecast this revenue

MEDIUM CONFIDENCE
Baseline
$1.0K/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
$884 – $2.1K
12 months
$908 – $3.3K
24 months
$841 – $7.6K
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

Early-stage solo · 41/100INDIE TIERexpected for tier
RevenueQualityMarketGrowthMoatSafetyFounderMonetiz.
Revenue Strength
3.0
Product Quality
3.6
Market Position
2.0
Growth Velocity
5.0
Defensibility
6.0
Operational Safety
7.0
Founder Strength
5.3
Monetization Maturity
1.0
  • 💰 Revenue: Modest — $415 - $2596/mo · INDIE tier · medium confidence, trajectory unclear.
  • ⭐ Quality: 4.5★ across 2 reviews — weak — significant quality concerns.
  • 📍 Market: Not yet charting in any of the 9 monitored markets.
  • 📈 Growth: ⚠ last update 947d ago — possibly dormant.
  • ⚠️ Risk: Moderate — dormant (947d since update).
🎯 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 = $18K-$33K. Portfolio play ($18K/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

MODEL
Revenue 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 7 of 7 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
Excellent rating (4.5★)METRIC
+$2,200
5 starREVIEW
+$1,800
Mature app (15y old)METRIC
+$1,500
highly recommendREVIEW
+$1,400
Single-language (English only)METRIC
−$400
Pre-traction phase (2 ratings)METRIC
−$300
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🆕 What's New · v2.1

• added more keyboards
• fixed some known compatibility issues
• support for iOS 14.7+

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Special Symbols: Keyboards
Developer
Marco Petrucci
Bundle ID
Not found
App Store URL
Open in App Store
Category
Utilities
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
$18.5K/mo
Top-grossing rank
Not found
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 growth8 ratings+700% lifetimeShow 3-year history estimate ▾May 2011Nov 2023Jun 2026
Tracked (29 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.
💰Pricing History$0.00 → $0.99 (+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.

📝 About this app

Special Symbols is a powerful set of keyboards that will help you to add a special touch of creativity to your messages, email and social apps!

Just add 1 keyboard to your system going to Settings > General > Keyboards and you'll have 21 keyboards available in your system!

• pǝʇɐʇoɹ
• ⓒⓘⓡⓒⓛⓔⓓ
• squared
• ¢σσɭ ɭєʈʈєяȿ
• åĉĉéńẗŝ ĂČČĔŃŤŚ
• bold
• italic
• monospace
• double text
• gothic
•full width / FULL WIDTH

Help us to improve and continue the development rating this app 5 stars! Thank you!
App Specs
🔐 Own this app? Claim & verify MRR →
💾 782 KB🔞 4+📱 iOS 14.7+🔖 v2.1🔄 updated 0d ago🌐 EN📂 Utilities💰 Paid
📅

What Worked™ · Development Pipeline

5 EVENTS TRACKED
Detected 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 ↑ 2.89 → 4.50 (improved 1.61★)
2011-08
📈
Crossed 10 ratings — social-proof flywheel kicking in
2011-07
Rating ↓ 4.33 → 3.75 (dropped 0.58★)
2011-06
Rating ↓ 5.00 → 4.50 (dropped 0.50★)
2011-05
🚀
First tracked snapshot — initial data captured
🌍

Multi-Country Performance

Available in 9 of 9 monitored markets
MarketRatingReviewsCurrent version
🇺🇸 US3.5★83.5★ this version
🇬🇧 GB4.5★24.5★ this version
🇩🇪 DE5★15★ this version
🇫🇷 FR5★15★ this version
🇯🇵 JP0★0
🇨🇦 CA5★15★ this version
🇦🇺 AU4★24★ this version
🇧🇷 BR5★15★ this version
🇮🇳 IN0★0
🔔

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📝 Description

95
BU Score · Transcendent

More by Marco Petrucci

View all →
📦 Portfolio summaryINDIE studio
2apps·$18K/mocombined
⚠ Concentrated — top app contributes 100% of combined revenue (single-app dependency)

Similar apps in Utilities

About this analysis
ZCAnalyzed by Zakhar Chumak · founder, bumetric·Full methodology·Low confidence

Why low confidence: only 2 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.

📌 Final verdict — read this before you trust the numbers above

Special Symbols: Keyboards is a very early-stage iOS app in the utilities space with weak public traction — only 2 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

4 answers · auto-generated from this app's public data
How much does Special Symbols make per month?
Low-confidence model estimate. Special Symbols has only 2 App Store ratings, so our revenue model has very little signal to work with — treat the ~$18K/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 Special Symbols?
Browse the full Utilities 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.
Who makes Special Symbols?
Special Symbols is published by Marco Petrucci 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 Special Symbols's BU Score?
Special Symbols has a BU Score of 57/100 (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.