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52
BU Score
Solid

Christella VoiceUp Complete

5.0 ✍️ Editor
✍️ BU Analytics Review

Christella VoiceUp Complete is an iOS app from Speechtools Ltd in the Education category, currently rated 5.0★ across 2 ratings. Initial signal reads as no scraped reviews yet — judgment based on metadata only.

Our BU Score puts it at 52Solid (established niche player). For a Education app, that means established niche player.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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since first record
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 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
Excellent rating (5.0★)METRIC
+$2,200
Established app (6y old)METRIC
+$800
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.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 86 MB🔞 12+📱 iOS 17.0+🔖 v5.1.3🔄 updated 6mo ago🌐 EN📂 Education💰 Paid🚀 Launched 2019 (6y old)

📝 About this app

Christella Antoni is a Consultant Speech & Language Therapist with over 20 years experience and is the UK's leading expert in transgender voice modification. Christella Voiceup will teach you how to feminize your voice.

VoiceUp Complete contains the complete voice feminization course as 3 separate stages and pitch analysis and graph so you can track your pitch change over time.

With 10 minutes of daily practice, Christella VoiceUp will help you feminize your voice!

The complete voice feminization course contains over 2 hours of voice therapy training in 3 stages - beginners, intermediate and advanced. Each stage contains five separate lessons which cover the fundamental aspects of voice and speech feminization. These involve modification of your resonance, pitch, intonation and vowel length. The final lesson of each stage combines these skills to help you develop control sustaining your feminized voice.

All exercises are demonstrated by Christella and provide a consistent voice model with clear explanations. The exercises are based on Christella's successful treatment model and gradually increase in length and complexity as you progress through each stage to ensure that you will securely acquire voice feminization skills.


Reviews
=======

"I love it !!!! This is the best app ever !!! - I would thoroughly recommend it - and it has been very helpful"

"So incredibly happy with this app. I have terrible anxiety and discomfort around my voice and having someone give clear instructions and lessons completely anonymously is a lifesaver. "

"Creates an amazing feeling that anything is achievable with the right guide and support. Thank you so much for making this App available for everyone"

"If you can’t / dont want to access voice therapy face to face for whatever reason, or you’re looking to supplement your face to face therapy – I’d definitely recommend it!"

"Not cheap but worth it as really good and really is life changing when what comes out your mouth match your mind and body"

"I'm using this app as a speech pathologist with my transgender clients. The techniques are extremely effective, easy to do, and my client's voice is becoming more feminine. Thank you Christella for developing this fantastic app."

🆕 What's New · v5.1.3

Bug fixes and performance enhancements

Profile & Insights

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

Identification

App name
Christella VoiceUp Complete
Developer
Speechtools Ltd
Bundle ID
co.speechtools.ChristellaMTFComplete
App Store URL
Open in App Store
Category
Education
Content rating
12+
Languages
EN

Company

Website
www.christellaantoni.co.uk
Tagline
Not found
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
$86/mo
Top-grossing rank
Outside top 99 in US Education
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth2 ratings+100% lifetimeShow 3-year history estimate ▾May 2023Dec 2024May 2026
Tracked (1 weeks) Pre-tracking estimate (37 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.
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