Comparison

echOpen ON vs SFNDT

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

echOpen ON

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An essential companion to your echOpen O1 probe, echOpen On allows you to choose the right frequency, adjust your image and add your notes in a simple, user-friendly digital environment. - echOpen O1 is a handheld Ultrasound imaging device intended for Point-of-Care Ultrasound (POCUS) in adult patients to allow ultrasound imaging of organs and tissues of the human body. - echOpen O1 includes a tri-frequency ultrasound probe to be used with a dedicated software application on a connected mobile device. - The device is to be used by trained Healthcare Professionals. - echOpen O1 is intended to complement the standard clinical examination by providing ultrasound imaging findings and to locate vessels prior to catheterisation. - echOpen ON is an accessory software application intended to control and present output information from a dedicated ultrasound probe in order to fulfil its intended purpose.

About

SFNDT

Features
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Application mobile SFNDT destinée aux internes, étudiants et néphrologues en activité. Au travers d’accès simplifiés, propose des outils interactifs, des calculateurs, des ressources scientifiques et pédagogiques ainsi que toutes les informations relatives à l’actualité et aux évènements de la SFNDT.

Screenshots

echOpen ON4 screens
SFNDT4 screens

Verdict

The call

The clearest difference is ads: echOpen ON at none against SFNDT's shown. SFNDT's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 1, 2026 and October 14, 2026 respectively.

Scorecard2 real differences · 4 level
echOpen ON versus SFNDT: the parameters behind the verdict, then further details
ParameterechOpen ONSFNDT
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 months
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.6 — better
Further details — not scored
Size67 MB104 MB
Age rating17+17+
Developerechopen factoryCYIM

In-app purchases

None

echOpen ON

No in-app purchases

None

SFNDT

No in-app purchases

Questions

Is echOpen ON free?
echOpen ON is free to download, with no in-app purchases.
Is SFNDT free?
SFNDT is free to download, with no in-app purchases.
Do echOpen ON or SFNDT have ads?
SFNDT shows ads; echOpen ON does not.
Which is updated more often, echOpen ON or SFNDT?
echOpen ON ships an update every 4 months, and SFNDT every 4 months. Most recently, echOpen ON was updated on October 1, 2026 and SFNDT on October 14, 2026.

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