EQD Calculator is a medical utility for radiation oncology professionals to compute BED and EQD values on iOS devices.
The App DNA
What makes this app unique?
Users hire the app for rapid, mobile-accessible radiobiological dose calculations during clinical practice, replacing manual table lookups with a tabular digital interface.
For Professionals working in the field of Radiation Oncology who require quick, mobile-accessible radiobiological dose calculations.
What does it look like?
Key features
Calculates Biologically Effective Dose and Equivalent Dose using the Linear-Quadratic model for radiotherapy planning.
Calculates equivalent fraction doses for varying treatment schedules to minimize clinical impact during plan changes.
Provides built-in access to alpha/beta ratio and tolerance dose tables for clinical reference.
How much does it cost?
The app is distributed as a free utility for medical professionals with no visible IAP or subscription gates.
Velocity
Dormant developmentperformanceShow more...
EQD Calculator has been inactive for over 4,150 days, indicating the project is no longer supported. The final release focused on minor technical adjustments, including third-party keyboard compatibility and a contact link. There is no evidence of ongoing development, feature updates, or maintenance cycles.
Who built it?
Hiroyuki KATOH
3 apps tracked · Medical
TDF Calculator
Vertical Check CameraUser Sentiment
What do users think recently?
Fresh user feedback skews excited. Users appreciate the tabular view interface provides a highly useful layout for clinical and professional data management.
How are ratings & reviews evolving?
What users say, by theme
- The tabular view interface provides a highly useful layout for clinical and professional data management
- Frequent application crashes occurring immediately upon launch following the latest operating system update
3 of 3 recent reviews analyzed · limited sample
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Competitive landscape for EQD Calculator
How's the Medical market?
EQD Calculator serves a specialized medical niche, maintaining a 4.43-star rating despite a lack of updates since 2015. The stability regressions on current iOS versions are the primary barrier to continued professional adoption.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for EQD Calculator
Where is it heading?
The app's long-term neglect has reached a critical failure point where it no longer functions on modern hardware. Without a stability update, the user base will continue to migrate to active alternatives, rendering the app obsolete.
- Frequent launch crashes on current operating systems prevent clinical use, forcing users to seek functional alternatives.
The SWOT
- Tabular interface layout provides a highly useful, efficient format for clinical data management
- Modernizing the codebase could recapture the professional user base currently seeking alternatives
Next best moves
Ship stability patch because the app crashes on launch → restore professional utility
The counter-intuitive read
The app's 11-year maintenance-mode status is a feature…
Read the full takeSince the last report: The core product state remains unchanged, but the analytical framing has shifted to consider the app's long-term inactivity as a potential benefit for clinical stability.
Bottom line
EQD Calculator provides a highly useful tabular interface for radiotherapy dose planning, but the 11-year update drought causes consistent launch crashes, so the developer must prioritize a stability patch to prevent total user churn to modern alternatives.
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- [1] App Store, source
Report last updated