C-130 Duty Day Calc icon
C-17 Duty Day Calc icon
C-5 Duty Day Calc icon
+2

John Robbins

For military pilots and aircrew members (C-17, C-5, KC-46) requiring rapid regulatory compliance and mission planning calculations.

5apps4.4(17)TravelUtilities

Snapshot

Who is John Robbins?

Automating complex flight duty and mission calculations for military aircrews to ensure regulatory compliance.

Target audience

Military pilotsAircrew members (C-17C-5

Rivals analysis in progress

Portfolio

5
apps
Travel3
Utilities2

Last updated

C-17 Duty Day Calc

v4.25

4.6y ago

Maintenance

Publisher DNA

What defines John Robbins?

Publisher DNA

Primary focus

Specialized flight duty calculators for military aircrews

Scale

indie

Target audience

Military pilots and aircrew members (C-17, C-5, KC-46) requiring rapid regulatory compliance and mission planning calculations.

Signature Patterns

  • •Specialized automation of Vol-3 military flight regulations across all titles
  • •Uniform 'paid' pricing model for all utility applications
  • •Airframe-specific targeting (C-17, C-5, KC-46) rather than general aviation tools
  • •Core functional focus on Zulu/Local time conversions and mission timelines
Maintenance

Portfolio momentum

The publisher maintains a low-frequency update cycle with one active app and a single release in the last six months focused on airframe modernization.

Last release 54d agoActive apps 1Abandoned 3

Portfolio

What does John Robbins ship?

Apps

5 apps analysed

Single-market publisher, every app ships only to United States.

Based on 2 of 5 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (1)

  • United States2 / 2

Core markets (2/2 apps)

United States

The Analyst's Read

The bottom line on John Robbins

Bottom line

John Robbins is a niche utility provider with a clear focus on the military aviation sector, leveraging deep domain knowledge to serve a captive audience. The shift toward newer airframes like the KC-46 indicates a sustainable, though low-velocity, development strategy.

Frequently asked questions

How many apps does John Robbins publish?
John Robbins has 5 apps tracked by Marlvel, primarily in the Travel category.
What kind of apps does John Robbins make?
John Robbins's portfolio is concentrated in Travel and Utilities, with an average rating of 4.4/5 across rated apps.
What is John Robbins's top app?
By review volume across the portfolio, C-17 Duty Day Calc is John Robbins's best-known app tracked by Marlvel.
In how many countries are John Robbins's apps available?
Marlvel has tracked John Robbins's apps across 1 country.

What fed this analysis

Apps analyzed:
4
With full intel:
0
With overview:
4
Website scraped:
no
Social presence:
no

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by John Robbins, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “John Robbins intelligence.” Updated 2026-04-24. https://marlvel.ai/publishers/john-robbins

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Data licensed under CC-BY-NC 4.0