Comparison

ONCALLAPP7 vs OpenEvidence

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

Head to head
About

ONCALLAPP7

This app facilitates secure messaging and advanced call scheduling for medical professionals across various specialties. It allows users to manage their availability, forwarding messages to designated contacts when offline, and supports rich media in SMS communications.

Highlights
  • Advanced call scheduling
  • Secure messaging
  • Availability status management
  • Message forwarding
  • SMS with media support
Features
Read full description

OnCall Solutions App provides messaging and advanced call scheduling functions for multiple specialties. Users can set their account as Available and receive their messages, or Offline, whereby messages are forwarded to a designated call person. SMS messages can include picture or audio media.

About

OpenEvidence

This app provides healthcare professionals with evidence-based clinical decision support and medical information. It acts as a search engine, sourcing answers from peer-reviewed literature and leading medical organizations to aid in high-stakes medical decisions at the point of care.

Highlights
  • Clinical decision support
  • Medical search engine
  • Sourced from peer-reviewed literature
  • FDA and CDC data integration
  • Partnerships with leading medical journals
  • Verified healthcare professional access
Features
Currently charting
Read full description

Clinical Decision Support & Medical Search Engine for Healthcare Professionals (NPI Required) OpenEvidence is the most widely used clinical decision support platform and medical search engine among U.S. clinicians. According to independent studies, more American physicians use OpenEvidence than all other AI platforms combined. OpenEvidence is trusted by millions of verified healthcare professionals to make high-stakes clinical decisions at the point of care with answers that are sourced, cited, and grounded in peer-reviewed medical literature. Founded with the mission to organize and expand the world's collective medical knowledge, OpenEvidence is actively used daily by the majority of physicians in the United States. OpenEvidence is free for all verified U.S. clinicians. AN OFFICIAL AI PARTNER OF: The New England Journal of Medicine (NEJM) The Journal of the American Medical Association (JAMA) and its 11 specialty journals National Comprehensive Cancer Network (NCCN) Nature Cochrane Library Wiley WHAT YOU GET: • Specific answers to clinical questions, with every claim cited to its source • 35 million+ peer-reviewed papers, 300+ medical journals, plus FDA and CDC sources • Licensed full text from NEJM, JAMA, Nature, Cochrane, and others • EvidenceGrade™: see the strength of the evidence behind every answer • CME and MOC credits, earned by asking questions • Visits for ambient documentation, Dialer for secure patient calls, and Voice Mode for hands-free answers CONTENT AGREEMENTS AND COLLABORATIONS: American Academy of Family Physicians (AAFP) American College of Cardiology (ACC) American Diabetes Association (ADA) American Academy of Pediatrics (AAP) American College of Obstetricians and Gynecologists (ACOG) American College of Emergency Physicians (ACEP) ASCO Guidelines American Academy of Orthopaedic Surgeons (AAOS) American Academy of Ophthalmology (AAO) American Urological Association (AUA) Plus AAO-HNS, GINA, SNO, SSO, and more. IN USE ACROSS: 10,000+ hospitals and medical centers nationwide, including Mayo Clinic, Mount Sinai, Cedars-Sinai, MSKCC, and Sutter Health. WHY CLINICIANS TRUST US: • HIPAA compliant across the platform • NEJM, JAMA, Nature, and NCCN—official content partners 
 • Tens of millions of clinical consultations per month WHAT CLINICIANS SAY: “OpenEvidence is currently the best AI tool for medical information.” — Dr. Paul Sax, Infectious Disease, Brigham and Women’s Hospital, Review in The New England Journal of Medicine Journal Watch (now NEJM Clinician) “In a morning report, a resident had a question that I didn’t know the answer to, but we were able to open OpenEvidence and get an answer on the spot.” — Dr. Kyle P. Lehenbauer, Minneapolis Veterans Affairs Medical Center “I use OpenEvidence multiple times during the day and every day. I am a better doc because of this. I expand my differential diagnoses and verify the science behind choices of treatments.” — Dr. Sharon E. Martin, Southern Huntingdon Medical Center Important note: OpenEvidence is available only to healthcare professionals. Users must verify their healthcare professional status before using OpenEvidence.

Screenshots

ONCALLAPP74 screens
OpenEvidence4 screens

Verdict

The call

The clearest difference is ratings volume: OpenEvidence at 12K against ONCALLAPP7's 3. OpenEvidence also leads on update cadence (weekly vs every 3 weeks) and chart position (#32 vs unranked). ONCALLAPP7's advantage is review sentiment (100% vs 80%). On price, rating, 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for ONCALLAPP7 against 4.9 for OpenEvidence. That said, the two scores are not equally well evidenced: OpenEvidence has 12K ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 100% of ONCALLAPP7's written reviews are positive against 80% of OpenEvidence's.

UpkeepUpdate frequency

ONCALLAPP7 ships an update every 3 weeks, OpenEvidence weekly. The most recent releases landed on August 30, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 7 level
ONCALLAPP7 versus OpenEvidence: the parameters behind the verdict, then further details
ParameterONCALLAPP7OpenEvidence
PriceFreeFree
Rating5.0 (3 ratings) — better4.9 (12K ratings)
Positive reviews100.0% of reviews — better80.5% of reviews
Number of ratings312K — better
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank—#32 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size75 MB95 MB
Age rating17+17+
DeveloperOnCall SolutionsOpenEvidence Inc.

Customer experience

ONCALLAPP7

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

OpenEvidence

All ratings11,905 ratings
Positive98.7%
Neutral0.4%
Negative0.8%
Written reviews287 reviews
Positive80.5%
Neutral2.8%
Negative16.7%

Bugs and requests

ONCALLAPP7

Not enough reviews yet to summarise bugs or requests.

OpenEvidence

Reported bugs

1 issue
  • App not working in latest update

Requested features

2 requests
  • Availability on MacBook
  • Integration with clinical workflows and EMRs

In-app purchases

None

ONCALLAPP7

No in-app purchases

None

OpenEvidence

No in-app purchases

Questions

Is ONCALLAPP7 free?
ONCALLAPP7 is free to download, with no in-app purchases.
Is OpenEvidence free?
OpenEvidence is free to download, with no in-app purchases.
Which has better reviews, ONCALLAPP7 or OpenEvidence?
ONCALLAPP7 is rated higher. ONCALLAPP7 averages 5.0 out of 5 from 3 ratings, while OpenEvidence averages 4.9 from 12K ratings.
Do ONCALLAPP7 or OpenEvidence have ads?
Neither ONCALLAPP7 nor OpenEvidence shows ads.
Which is updated more often, ONCALLAPP7 or OpenEvidence?
ONCALLAPP7 ships an update every 3 weeks, and OpenEvidence weekly. Most recently, ONCALLAPP7 was updated on August 30, 2026 and OpenEvidence on September 24, 2026.

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