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55
BU Score
Solid

Word Replacer for Safari

4.8 ✍️ Editor
✍️ bumetric analysis

Word Replacer for Safari is an iOS app from Yoshiko Sato in the Utilities category, currently rated 4.8★ across 21 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 55: Solid (established niche player). For a Utilities 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 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Paid app ($3.99)METRIC
+$2,800
Excellent rating (4.8★)METRIC
+$2,200
Established app (4y old)METRIC
+$800
Pre-traction phase (21 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.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Jun 24
Jul 24
Dec 24
Jul 25
Sep 25
Oct 25

⭐ 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 →
💾 1 MB🔞 4+📱 iOS 15.0+🔖 v5.0.0🔄 updated 1mo ago🌐 EN, JA📂 Utilities💰 Paid🚀 Launched 2022 (4y old)

📝 About this app

Replace words and phrases on websites with your own text rules in Safari. This Safari extension offers flexible matching options, rule ordering, and convenient tools for testing and backing up your settings.

Key Features:
• Create replacement rules with a source "Word" and target "Replacement".
• Use CS for case-sensitive matching and IN to match text inside larger words. For example, when the Word is her, turning IN off replaces only standalone her, while turning IN on also replaces her inside words such as other and there.
• Control priority with Rule Order (Top-Down or Bottom-Up) when multiple rules can match the same text.
• Set Default CS, Default IN, and Default RX so new rules start with your preferred options.
• Use Import / Export to back up your settings as JSON and restore them later.
• Preview how your current rules will transform text with the built-in Replacement Test.

Advanced Matching:
• Turn RX on if you want to use regular expressions in the Word field.
• Turn RX off to match symbols as plain text without escaping them.
• Example: to match [y/n], enter [y/n] with RX off, or \[y/n\] with RX on.

Notes:
• Works in Safari on websites where this extension is allowed.
• Spaces, punctuation, and surrounding characters affect how text is matched.
• Due to the wide variety of websites, compatibility with every site cannot be guaranteed.
• If needed, feel free to contact us before installing to check whether this extension works on a specific site.

For feature requests, questions, or bug reports, please visit our support page:
https://www.wide-apps.com

🆕 What's New · v5.0.0

Revamped UI and enhanced extension functionality.

Profile & Insights

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

Identification

App name
Word Replacer for Safari
Developer
Yoshiko Sato
Bundle ID
satofh.WordReplacer
App Store URL
Open in App Store
Category
Utilities
Content rating
4+
Languages
EN, JA

Company

Website
www.wide-apps.com
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 100 in US Utilities
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
Recent App Store Reviews14 latest · avg 4.5★ · 78.6% 5★ · 7.1% 1★
5★
11 (79%)
4★
1 (7%)
3★
1 (7%)
2★
0 (0%)
1★
1 (7%)
+0 ratings/week
Praise: great ×5 love ×3 amazing ×2 perfect ×1 best ×1Complaints: hate ×1
Top positive
★★★★★ Good Language Learning Tool
I’m learning a language and set this up to replace words I have learned with their translated counterpart. Works like a charm! The CS and IN features are essential and why I decided the price was worth it.…
★★★★★ Works great!
Simple yet powerful and just works!…
Top negative
★☆☆☆☆ No longer works?
I get prompted to press the plus button when I open the extension in safari. There is no plus button anywhere. Please fix this issue…
★★★☆☆ Could use improvements
This extension is pretty good, but has plenty of room for improvement. It’s relatively easy to use, but the process of getting it set up is a little unclear. Opening the app tells you to go to Settings to turn on the extension, but what it…
📈Ratings growth21 ratings+2000% lifetimeShow 3-year history estimate ▾Feb 2022Oct 2024May 2026
Tracked (15 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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Full revenue analysis
Read the article-style breakdown for Word Replacer for Safari: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
Read deep-dive →