echOpen ON vs IMM Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
IMM Pro
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L’application « IMM Pro » est une application qui centralise des informations, des ressources et des services liés à l'IMM.
Screenshots
Verdict
The clearest difference is update cadence: IMM Pro at every 3 weeks against echOpen ON's every 4 months. IMM Pro also leads on iOS requirement (15.0 vs 17.0). On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
echOpen ON ships an update every 4 months, IMM Pro every 3 weeks. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.
| Parameter | echOpen ON | IMM Pro |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 67 MB | 16 MB |
| Age rating | 17+ | 4+ |
| Developer | echopen factory | ASSOCIATION NOUVEL INSTITUT MEDICO-CHIRURGICAL MONTSOURIS |
In-app purchases
echOpen ON
No in-app purchases
IMM Pro
No in-app purchases
Questions
Is echOpen ON free?
Is IMM Pro free?
Do echOpen ON or IMM Pro have ads?
Which is updated more often, echOpen ON or IMM Pro?
Other comparisons
