EDTNA/ERCA vs For Good Measure
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
EDTNA/ERCA
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EDTNA/ERCA Official Application The European Dialysis and Transplant Nurses Association/European Renal Care Association (EDTNA/ERCA) App contains: News, Committees, Brand Ambassadors, Webinars, Membership Information, Education Materials and much more!
For Good Measure
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For Good Measure is an offline-capable echocardiography reference for clinicians who need to look up guideline-based reference values quickly in everyday clinical practice. Not a medical device. The app makes no diagnoses, gives no patient-specific recommendations, performs no calculations on patient data, and does not replace clinical judgement. It displays only general reference information derived from published guidelines β and is intended exclusively for qualified medical professionals. FEATURES β’ Five parameter types β reference ranges, graded parameters, severity tables, score tables, and decision algorithms β’ Full-text search β instant search across all parameters and categories β’ Favorites β mark frequently used parameters for quick access β’ Sex-specific values β switch between male and female reference ranges where applicable β’ Cross-references β navigate between related parameters β’ LV segment model β the left-ventricular segments at a glance β’ Source citations β every parameter links to its guideline; tapping "Quelle" fetches the guideline PDF directly from the publisher (kept in memory for the current session only); if retrieval fails, the DOI is copied to the clipboard β’ Bilingual β full interface and clinical content in German and English, switchable in Settings (German is the source of truth) β’ Dark mode β a Material 3 dark theme optimized for the clinical environment β’ Offline-capable β all reference data ships inside the app; the network is used only for the optional guideline-PDF retrieval DATA MINIMIZATION No user accounts, no ads, no tracking, no analytics or crash-reporting SDKs, no patient data. The app collects and transmits no personal data to the provider. The only network feature is the user-initiated retrieval of a guideline PDF directly from the respective publisher's server. SOURCES Reference values are based on published society guidelines (including ASE, EACVI, ESC, BSE, SIECVI, and the German AWMF S2k TTE guideline). The applicable original guideline always prevails; every value must be verified against the original source before clinical use. All information is provided without warranty.
Screenshots
Verdict
The clearest difference is update cadence: For Good Measure at daily against EDTNA/ERCA's every 2 months. For Good Measure also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EDTNA/ERCA ships an update every 2 months, For Good Measure daily. Both last shipped on October 7, 2026.
| Parameter | EDTNA/ERCA | For Good Measure |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Daily β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 β better |
| Further details β not scored | ||
| Size | 21 MB | 30 MB |
| Age rating | 12+ | 17+ |
| Developer | Trilobite Technologies, s.r.o. | Ferdinand Luka Biegert |
In-app purchases
EDTNA/ERCA
No in-app purchases
For Good Measure
No in-app purchases
Questions
Is EDTNA/ERCA free?
Is For Good Measure free?
Do EDTNA/ERCA or For Good Measure have ads?
Which is updated more often, EDTNA/ERCA or For Good Measure?
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