Sun Apps
For students and technical power users seeking clean, ad-free organizational and developer utilities.
School Assistant – Planner
Snapshot
Who is Sun Apps?
Providing students and power users with ad-free, utility-focused tools designed for the Apple ecosystem.
Target audience
Portfolio
Free 3Last updated
School Assistant – Planner
vVARY
7.1y ago
Publisher DNA
What defines Sun Apps?
Publisher DNA
Primary focus
Ad-free utilities and educational tools for the Apple ecosystem
Scale
indie
Target audience
Students and technical power users seeking clean, ad-free organizational and developer utilities.
Origin
Founded by Dylan McDonald, a Swift Student Challenge winner and RIT student who has been developing apps since 2017.
Signature Patterns
- •Strict 100% free pricing model with no ads or paywalls
- •Deep integration across the Apple ecosystem, including Apple Watch and iPad optimization
- •Focus on utility-driven tools for niche technical or academic audiences
- •Monetization limited to voluntary 'tip jar' support
Portfolio momentum
The portfolio is in a maintenance phase with 1 release in the last 6 months and 50% of the 4-app catalog currently active.
Company profile
high confidence- Headquarters
- Rochester, USA
- Founded
- 2017
- Employees
- 1-10
Portfolio
What does Sun Apps ship?
Apps
4 apps analysed
iCloud sync provides multi-device persistence for professional workflows
- Microscopists find the tool highly convenient for quick calculations while working in the field
- Users report that resolution and field of view changes do not apply correctly within games
Everything a student needs to stay organized now fits in your pocket! 🎒📲
100% free/no-ad model creates high user trust
- Ease of Use
- Technical Issues
Customizable counting intervals allow users to track specific quantities without repetitive manual input actions
- The clean and modern interface makes tallying and countdown tasks feel simple for daily users
- App crashes and data clearing failures prevent long-term users from maintaining their existing tally records
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)
User Sentiment
How do users feel about their apps?
3
Positive apps
0
Neutral / mixed
0
Negative apps
76/100
Avg sentiment score
Rivals
Who does Sun Apps compete with?
The rivals identified
Nemeses(3)
Both applications target users requiring display resolution and pixel density calculations, creating direct competition for the same technical audience.
With 157,368 reviews and a high 4.8 rating, this app operates at a scale 36x larger than the target app while maintaining extreme development velocity (15 releases in 6 months).
DayCount is the dominant force in the countdown space with 26,262 ratings and a high update frequency of 2 releases in the last 6 months.
Contenders(13)
Both applications target users requiring precise aspect ratio and dimension calculations, creating direct overlap in the professional design and development utility category.
Both apps target professionals requiring precise dimension and ratio calculations, creating direct competition for users seeking specialized math tools.
Both applications target users requiring display dimension management, with Resolutioner offering a broader suite of professional tools compared to the singular focus of DPI Calculator.
Both applications serve developers and designers requiring precise display dimension management, creating a direct overlap in utility for professional layout workflows.
Both applications target designers and developers requiring screen dimension lookups, creating direct overlap in utility for hardware planning.
PixelKit competes by offering a broader suite of design and development calculators that overlap with the core resolution and aspect ratio tools in Resolutioner. Both apps target the same professional designer and developer audience with offline-first, utility-focused toolsets.
Both apps target design and engineering professionals requiring precise image or display dimension management. They compete for the same niche productivity workflow where users need to verify pixel-perfect dimensions on mobile devices.
Directly challenges the target's 'beautiful' design value proposition with 2,488 ratings and a 4.71 score.
Both applications target designers and creators requiring aspect ratio and dimension calculations, competing for the same professional utility workflow.
This is the most direct functional rival in the Education category with a similar scale of 6,147 reviews compared to the target's 4,280.
Both apps target designers and developers needing quick dimension calculations during layout work, creating a direct overlap in utility for screen and canvas design.
A high-performing direct utility rival maintaining a superior 4.81 rating across 12,101 reviews.
Both applications target designers and technical professionals requiring precise display dimension management, creating direct competition for the same utility workflow.
Same space(25)
Calculator for iPad! targets the same professional and student demographic as Resolutioner but provides a visual scratchpad interface for math instead of static dimension storage.
Pixel Resizer serves the same developer audience as Resolutioner but focuses on batch image scaling for App Store submissions.
A high-quality niche rival with a 4.82 rating across 1,711 reviews, competing for the same 'A+ student' demographic.
A well-known name in college scheduling with 1,713 reviews, though currently hindered by lower user satisfaction.
AI Photo Enhancer serves the same design audience as Resolutioner but focuses on image restoration and enhancement using artificial intelligence.
Calculator-- serves the same general audience as Resolutioner but focuses on visual personalization for basic arithmetic tasks.
As an ecosystem giant with 111,680 reviews, it represents the primary platform students and parents use for school data, often alongside a dedicated planner.
DPI Calculator by Fefercode targets the same hardware enthusiast audience as Resolutioner but provides a static reference tool for pixel density.
Projector & Screen Calculator targets the same technical projectionist audience as Resolutioner but focuses on lens throw and screen size calculations.
Ratio Calculator Tool serves the same professional and artistic audience as Resolutioner but focuses on proportion math rather than display dimensions.
Calculator· serves the same basic arithmetic audience as Resolutioner but emphasizes high-contrast accessibility for standard tasks.
Video Aspect Ratio for Safari serves the same professional audience as Resolutioner but operates as a browser extension to fix video playback distortion.
An adjacent sub-genre rival that captures 'counter' search intent with a massive 12,572 rating base.
Simple ratio calculator serves the same design and scientific audience as Resolutioner but focuses on repeatable formula saving for proportions.
Runestone Text Editor serves the same developer audience as Resolutioner but provides a code-focused environment for text editing rather than resolution calculation.
JellyCuts serves the same power-user and developer audience as Resolutioner but provides a scripting environment for system-level automation.
ScreenTest serves the same professional display audience as Resolutioner but provides hardware diagnostic tools instead of calculation utilities.
Focuses on the lifestyle and event-tracking aspect of the target's countdown feature with 1,025 ratings.
Calculator‰ serves the same general utility audience as Resolutioner but focuses on high-visibility button layouts for daily arithmetic rather than professional dimension management.
Converter-Universal Conversion shares the same professional engineering audience as Resolutioner but focuses on industrial reference tables rather than display calculations.
Model Scaler targets the same hobbyist and technical audience as Resolutioner but provides specific conversion logic for railroad and tabletop gaming standards.
Calculator + competes for the same technical power users as Resolutioner by offering advanced equation solving and unit conversion capabilities.
Ratio Solver: Proportions targets the same student and designer audience as Resolutioner but provides a dedicated tool for solving missing ratio variables.
Easy Converter targets the same student and casual user base as Resolutioner but provides a minimalist interface for unit conversions.
Calculator - Free Calculator serves the same basic utility segment as Resolutioner but focuses on visual simplicity for general iPad users.
New entrants(3)
A rising threat in student productivity updated as recently as February 2026, leveraging gamification to capture the same student audience.
Screen Specs: Sizes & DPI targets the same developer and designer audience as Resolutioner but provides a comprehensive, offline reference library for device dimensions.
The closest candidate in scale to the target app, showing renewed activity with a release in February 2026.
The Analyst's Read
The bottom line on Sun Apps
Bottom line
Sun Apps is a mission-driven indie developer that differentiates through a radical anti-monetization stance. While this builds significant user goodwill, the portfolio's long-term viability depends on the developer's ability to maintain a diverse set of niche utilities as a solo operator.
Frequently asked questions
How many apps does Sun Apps publish?
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What kind of apps does Sun Apps make?
What is Sun Apps's top app?
In how many countries are Sun Apps's apps available?
What fed this analysis
- Apps analyzed:
- 4
- With full intel:
- 3
- With overview:
- 4
- Website scraped:
- yes
- Social presence:
- no
