29K iOS Apps Tracked Updated 12 min ago Revenue Forecasts
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50
BU Score
Solid

C-5 Duty Day Calc

5.0 ✍️ Editor
✍️ bumetric analysis

C-5 Duty Day Calc is an iOS app from John Robbins in the Travel category, currently rated 5.0★ across 1 ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.

Our BU Score puts it at 50: Solid (established niche player). For a Travel 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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Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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since first record
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💰 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 ($0.99)METRIC
+$2,800
Excellent rating (5.0★)METRIC
+$2,200
Mature app (10y old)METRIC
+$1,500
Single-language (English only)METRIC
−$400
Pre-traction phase (1 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 →
💾 1 MB🔞 4+📱 iOS 12.0+🔖 v2.1🔄 updated 3y ago🌐 EN📂 Travel💰 Paid🚀 Launched 2015 (10y old)

📝 About this app

A C-5 Duty Day Calculator for crews hauling Uncle Sam's stuff around the Globe.

This app will quickly help you calculate all applicable duty day restrictions in both Zulu and Local time zones. Simply enter the Alert, Show or Takeoff time and all Vol-3 restrictions will be instantly calculated for you. No more complex calculus at the end of your duty day.

NEW: You can now add your own timeline to the app. Add your personal or squadron timeline to the latest addition. The tab can be tied to other calculator pages or work as a standalone tool for you planning your duty day.

It also includes a time calculator that allows you to calculate start, duration or end time when given the other two. Including the 781 decimal duration.

Hope you find it useful. My email is included if you have suggestions for improvements.

🆕 What's New · v2.1

Fixed strange little night shift bug on the Bravo Tab.  
(I'm sorry Dave that you were stuck in Bravo.)

Profile & Insights

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

Identification

App name
C-5 Duty Day Calc
Developer
John Robbins
Bundle ID
C5DDC
App Store URL
Open in App Store
Category
Travel
Content rating
4+
Languages
EN

Company

Website
robbinsware.github.io
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
$459/mo
Top-grossing rank
Outside top 100 in US Travel
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
https://github.com/Novajed
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
github
Email
robbinsware@gmail.com
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth1 ratingsShow 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.

More by John Robbins

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Full revenue analysis
Read the article-style breakdown for C-5 Duty Day Calc: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
Read deep-dive →