Comparison

My DIA vs MSD One

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

Head to head
About

My DIA

Connect with peers and experts in the life sciences field to discuss global and local challenges. Access information on upcoming activities, manage registered events, and schedule meetings to foster collaboration for better policies and patient outcomes.

Highlights
  • Global community networking
  • Event access and management
  • Peer and expert connection
  • Meeting scheduling
  • Life sciences challenge discussion
Features
Read full description

At DIA, we come together to collaborate and problem-solve, discussing global and local challenges facing the life sciences field in an increasingly more complex and interconnected world. DIA's goal, and our members' hope, is for this collaboration to result in better policies, regulations, science, research and development, and ultimately better patient outcomes worldwide. This app is your one-stop-shop for the Global DIA Community including all regions, providing helpful information on upcoming DIA activities, access to events you are registered for, and the ability to connect with your peers and other key experts - and even schedule meetings. Download now

About

MSD One

Enhance hybrid and in-person events with interactive features. Attendees receive personalized agendas, travel updates, and venue info. Facilitate audience engagement through Q&A, polls, and a secure social media wall.

Highlights
  • Personalized agendas
  • Real-time travel updates
  • Moderated Q&A panel
  • Slide saving with annotations
  • Audience polling and gamification
  • Private social media wall
Read full description

Provide active engagement and promote reciprocal learning, boost productivity and efficiency of hybrid and in-person events with MSD One. Elevating the experience Built with the attendee experience in mind, MSD One is custom tailored for each meeting. Providing attendees with personalized agendas, real-time travel updates and notifications as well as venue information and dining recommendations. Optional features include a moderated Q&A panel that empowers attendees to directly engage with presenters. If allowed, attendees can select specific slides to save along with their personal annotations. Let’s learn from each other • Using MSD One during controlled open floor events such as Town Halls or workshops enables meeting organizers to glean invaluable insights from their audience. • A private and secure social media wall facilitates connections, engagement, and interactions among attendees. • Incorporating elements such as polling, gamification, word clouds, babblestream, and more, MSD One ensures allows us to assess presenter effectiveness and track useful metrics of attendee interest, engagement and knowledge retention. With MSD One every event is maximized to its fullest potential.

Screenshots

My DIA4 screens
MSD One4 screens

Verdict

The call

The clearest difference is update cadence: My DIA at weekly against MSD One's every 6 months. My DIA also leads on ratings volume (97 vs 7). MSD One's advantage is monetization model (free vs ad-supported). On price, rating, review sentiment and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for My DIA against 4.4 for MSD One. That said, the two scores are not equally well evidenced: My DIA has 97 ratings behind it against 7, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

My DIA ships an update weekly, MSD One every 6 months. The most recent releases landed on September 17, 2026 and September 27, 2026 respectively.

Scorecard3 real differences · 7 level
My DIA versus MSD One: the parameters behind the verdict, then further details
ParameterMy DIAMSD One
PriceFreeFree
Rating4.4 (97 ratings)4.4 (7 ratings)
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings97 — better7
Update frequencyWeekly — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.416.4 — better
Further details — not scored
Size143 MB122 MB
Age rating17+17+
DeveloperDrug Information Association, Inc.Merck Sharp & Dohme LLC

Customer experience

My DIA

All ratings97 ratings
Positive85.6%
Neutral2.1%
Negative12.4%
Written reviews4 reviews
Positive0.0%
Neutral25.0%
Negative75.0%

MSD One

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

My DIA

No in-app purchases

None

MSD One

No in-app purchases

Questions

Is My DIA free?
My DIA is free to download, with no in-app purchases.
Is MSD One free?
MSD One is free to download, with no in-app purchases.
Which has better reviews, My DIA or MSD One?
My DIA and MSD One are both rated 4.4 out of 5 on the App Store, from 97 and 7 ratings respectively.
Do My DIA or MSD One have ads?
Neither My DIA nor MSD One shows ads.
Which is updated more often, My DIA or MSD One?
My DIA ships an update weekly, and MSD One every 6 months. Most recently, My DIA was updated on September 17, 2026 and MSD One on September 27, 2026.

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