Preston Fung
For uSPS letter carriers and clerks who require visual, color-coded tracking of rotating scheduled day-off (SDO) cycles.
2026 USPS ColorCal Calendar
Snapshot
Who is Preston Fung?
Providing specialized, offline-capable scheduling tools for USPS personnel. Simplifying complex rotating work calendars for letter carriers and clerks.
Target audience
Rivals analysis in progress
Portfolio
Free 1Last updated
2026 USPS ColorCal Calendar
v1.0
11mo ago
Publisher DNA
What defines Preston Fung?
Publisher DNA
Primary focus
Productivity tools for USPS personnel
Scale
indie
Target audience
USPS letter carriers and clerks who require visual, color-coded tracking of rotating scheduled day-off (SDO) cycles.
Origin
Founded by a USPS Letter Carrier who developed the software to address a personal need for a better color-coded day-off calendar.
Signature Patterns
- •Strict focus on USPS-specific rotating day-off (SDO) scheduling.
- •Offline-first architecture requiring no internet connectivity or data collection.
- •Annualized product release cycle aligned with the calendar year.
- •Simple, utility-driven UI focused on color and alpha-coded visual tracking.
Portfolio momentum
With zero releases in the last 6 months and 3 out of 4 apps classified as abandoned, the publisher maintains a minimal, static presence.
Portfolio
What does Preston Fung ship?
Apps
4 apps analysed
Single-market publisher, every app ships only to United States.
Based on 1 of 4 apps with localized market data, more coverage rolling in as scans complete · last scanned .
Americas (1)
- United States1 / 1
Core markets (1/1 apps)
The Analyst's Read
The bottom line on Preston Fung
Bottom line
The publisher serves a narrow, well-defined professional niche with a functional, low-maintenance product suite. Their model is built on high-utility, low-complexity tools that solve a specific pain point for a captive audience.
Frequently asked questions
How many apps does Preston Fung publish?
What kind of apps does Preston Fung make?
What is Preston Fung's top app?
In how many countries are Preston Fung's apps available?
What fed this analysis
- Apps analyzed:
- 4
- With full intel:
- 0
- With overview:
- 4
- Website scraped:
- yes
- Social presence:
- no