Comparison

Join vs Synapp Messaging

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

Head to head
About

Join

This app facilitates secure communication and collaboration among healthcare professionals. It allows for the sharing of patient information, high-resolution medical images, and diagnostic data, integrating with hospital IT systems to streamline care delivery.

Highlights
  • Secure patient information sharing
  • DICOM image viewer
  • Integration with PACS and EMR
  • 1-on-1 and group chatting
  • Live streaming video from clinical areas
  • Anonymity processing for patient data
Features
Read full description

Join is the hub for healthcare professionals and providers. It simplifies communication and collaboration between clinicians and healthcare providers through its secure and compliant patient information sharing technology. Join also enables clinicians to view high-resolution CT/MRI images via a DICOM viewer anywhere, reducing the need for them to switch between sites and helping speed up care delivery without sacrificing quality. Join easily integrates into internal IT systems such as PACS and EMR*, enabling users to view and share EHR information*, various diagnostic images, laboratory data*, and prescriptions*. * This feature is optional and currently limited to a few specific EMRs Join is also certified as a software medical device by PMDA (Japan), FDA (United States), CE (European Economic Area), and ANVISA (Brazil). Functions: - Connect to internal systems in hospitals such as PACS - Support private 1 on 1 chatting and group chatting - Use as medical cooperation tool between hospitals - Send and receive DICOM images in a chat, within a hospital, and between hospitals - Watch live streaming video from ICU, operation rooms, and patients’ room Security: - Anonymity processing for patients' personal information by gateway server - Encrypting chat data which was saved on device - Encrypting by using VPN connection between Inner-hospital system and Cloud - TLS/SSL encryption between devices and Cloud - Preventing unauthorized access by requiring passcode at application startup - Non-downloadable medical images (clearing cache each time) - ISMS (ISO27001) certified Note - Continued use of GPS running in the background can decrease battery life.

About

Synapp Messaging

A secure, French-hosted messaging app for healthcare professionals to enhance daily communication and collaboration. It offers unique medical features designed with user input and ensures end-to-end encryption for patient data confidentiality. User verification and a national directory facilitate connections with colleagues and specialists.

Highlights
  • Secure medical messaging
  • End-to-end encryption
  • User verification for healthcare professionals
  • National directory of colleagues
  • HIPAA compliant
  • ISO-27001 certified
Features
Read full description

Synapp Messaging - Medical Messenger Synapp Messaging est une application de messagerie médicale sécurisée et hébergée en France. Elle a été conçue par et pour les professionnels de santé afin de les aider à mieux communiquer et collaborer au quotidien. Fonctionnalités médicales inédites : des fonctionnalités inspirées du quotidien des professionnels de santé ont été conçues avec l'aide des utilisateurs pour les aider à améliorer et à optimiser leur travail. L'application est sécurisée et est conformes aux prérequis techniques et réglementaires du secteur de la santé. Ainsi toutes les données échangées sont chiffrées de bout en bout qui garantissent la confidentialité des échanges notamment les données patients. Les utilisateurs sont vérifiés pour s'assurer qu'uniquement les professionnels de santé peuvent s'inscrire. Vous pouvez chercher vos confrères/consœurs via l'annuaire nationale (en France pour l'instant) et tirer profit de la puissance du réseau. Améliorer la qualité de soin en contactant les meilleurs spécialistes du domaine. SynApp Messaging est conforme au RGPD, à la norme ISO-27001. Elle est hébergées en France chez un hébergeur souverain agréé HDS (Hébergement Données de Santé)

Screenshots

Join4 screens
Synapp Messaging4 screens

Verdict

The call

The clearest difference is review sentiment: Synapp Messaging at 100% against Join's 25%. On price, update cadence, ads and in-app purchases 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 monthly. The most recent releases landed on September 21, 2026 and July 21, 2026 respectively.

Scorecard1 real difference · 9 level
Join versus Synapp Messaging: the parameters behind the verdict, then further details
ParameterJoinSynapp Messaging
PriceFreeFree
Rating3.9 (9 ratings) — better—
Positive reviews25.0% of reviews100.0% of reviews — better
Number of ratings9 — better—
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supportedAd-supported
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better16.6
Further details — not scored
Size179 MB56 MB
Age rating+1717+
DeveloperAllm Inc.IMHOTEP DIGITAL HEALTHCARE

Customer experience

Join

All ratings9 ratings
Positive66.7%
Neutral22.2%
Negative11.1%
Written reviews16 reviews
Positive25.0%
Neutral12.5%
Negative62.5%

Synapp Messaging

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Join

No in-app purchases

None

Synapp Messaging

No in-app purchases

Questions

Is Join free?
Join is free to download, with no in-app purchases.
Is Synapp Messaging free?
Synapp Messaging is free to download, with no in-app purchases.
Do Join or Synapp Messaging have ads?
Neither Join nor Synapp Messaging shows ads.
Which is updated more often, Join or Synapp Messaging?
Join ships an update monthly, and Synapp Messaging monthly. Most recently, Join was updated on September 21, 2026 and Synapp Messaging on July 21, 2026.

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