Custom Formulas is a computational utility for creating and running user-defined mathematical formulas on iOS and Android.
Product velocity
Steady
Daily rank 🇺🇸
—
Utilities
Sentiment
4.7
77 reviews
Nemesis
HiPER Scientific Calculator
The App DNA
What makes this app unique?
Users hire this app to automate repeatable technical calculations that standard scientific calculators cannot handle, removing the need for manual spreadsheet entry.
For Professionals and students in technical fields like surveying, finance, and health who require custom, repeatable calculation workflows.
What does it look like?
Key features
Users define mathematical formulas and input variables to perform custom computations
Downloadable formula categories including health, finance, and surveying directly within the app
Saves computation results to CSV files for external spreadsheet analysis
How much does it cost?
Paid model at $3.99 USD per platform, targeting users seeking a specialized, ad-free computational tool.
Velocity
Steady developmentShow more...
5 versions in history. Development pace: steady.
Who built it?
Anthony Dunk
13+ apps tracked · Utilities
Handy GPS
Handy GPS lite
Coordinate Master
Rock Art Enhancer
Handy Surveying
Sky Light Pro
Handy Score Pad
Handy GPS (subscription)
Handy Calculator
Custom Data Recorder
Handy List
Handy Daily Data LoggerUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Custom Formulas
How's the Utilities market?
The app occupies a niche utility space with a $3.99 price point, competing against free scientific calculators. The 76 Android ratings suggest a low-volume, high-intent user base compared to mass-market tools.
Read the market outlookThe rivals identified
By Jindrich Houska
This app dominates the specific niche of user-defined computational utilities with a massive, established user base and high-frequency update cadence.
- Offers a comprehensive library of built-in scientific constants and unit conversions that target lacks
- Supports multi-line expression history and editing which simplifies complex multi-step computational workflows
- Provides a highly customizable interface allowing users to toggle between basic and advanced scientific layouts
Unlock the head-to-head verdict: where this rival wins, and where it loses.
Access the full report for freeThe Analyst's Read
Key takeaways for Custom Formulas
Where is it heading?
The computational utility market is consolidating around AI-driven and visual-first tools, which puts manual-entry apps like Custom Formulas at a disadvantage. The app must pivot toward a no-code formula builder identity to maintain relevance against high-velocity scientific calculator competitors.
- Recent updates focused on SDK compatibility and minor function additions, indicating a maintenance-oriented development cycle.
- The entry of natural language calculators like Soulver 3 threatens the long-term viability of grid-based formula entry.
The SWOT
- Formula sharing hub functions as a community-driven retention mechanism
- Variable-driven architecture supports complex multi-step workflows
- Ad-free model appeals to power users
- Integrate wearable companion apps for field-based surveying
- Expand formula categories into niche engineering sectors
Next best moves
Ship visual graphing integration because Desmos captures the academic segment → increase market share
+ 1 more prioritized moveThe counter-intuitive read
The app's low Android rating count is a strategic asset…
Read the full takeFeature gaps
Visual graphing engine (available in Desmos but absent here) +2
Since the last report: The app's competitive intelligence profile has expanded from a basic feature list to a comprehensive strategic assessment, highlighting specific gaps in graphing and AI capabilities.
Bottom line
Custom Formulas holds a distinct niche through its formula-sharing utility, but the lack of visual graphing leaves it vulnerable to academic-focused rivals, so the PM should prioritize graphing integration to broaden the target audience.
Unlock 3 critical frictions, 3 market threats, 1 more prioritized move and the analyst’s take.
Access the full report for freeReport last updated