Comparison

Suvoda vs Cardinal Study

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

Head to head
About

Suvoda

This app helps clinical trial participants manage their study journey. It allows users to track payments, submit expenses, complete questionnaires, schedule appointments, and view travel details, all from a single platform.

Highlights
  • Stipend and reimbursement tracking
  • Expense submission with receipt images
  • Questionnaire completion (offline capable)
  • Appointment scheduling and reminders
  • Rideshare and travel itinerary viewing
  • Payment method selection
Read full description

Clinical trial participants can streamline the clinical trial journey with the Suvoda app. With a single app and only one login, participants can manage multiple trial activities including stipend payments, expense reimbursement, questionnaires, appointment scheduling, rideshare booking, and viewing travel itinerary details. Work with your study coordinator or clinical research site to access your clinical trial on the Suvoda app. The Suvoda app is designed exclusively for clinical trial participants. Site staff and sponsor study teams may use other tools provided by Suvoda to manage their clinical trial. Key Features (if enabled for your trial) Greenphire Patient Payments • Enable easy receipt of study-related stipend payments and reimbursement • Electronically submit expenses for reimbursement and attach an image of your receipt • Manage and check the balance of your physical or virtual debit card • Complete your required profile details and choose your preferred payment method directly in the Suvoda app. Available payment methods include physical debit card, virtual debit card, and direct deposit into the bank of your choice (availability dependent on your trial). Greenphire Travel • Book a rideshare and easily view the status and key details of your ride • Access key details of your travel itinerary (flights, hotels, car rental, and more) • View the details of all upcoming and past trips • In-app and push notifications to keep you updated in real time about your rideshare and itinerary Questionnaires • View your current and upcoming questionnaires • Complete questionnaires from your mobile device (even if you’re offline) • Auto-save questionnaire answers as you go • Opt-in to receive reminders when questionnaires are coming due Appointment Scheduling • Schedule and manage your appointments • Receive reminders for upcoming appointments

About

Cardinal Study

Features
Read full description

This app is intended for use by participants in the Cardinal COPD study and requires an invitation and activation code from the study site to register. A Multi-center, Randomized, Double-blind, Placebo-controlled Clinical Trial Comparing the Safety and Efficacy of Two Different Oral Vapendavir (VPV) Doses with Placebo as Treatment for Rhinovirus (RV) in Participants with Chronic Obstructive Pulmonary Disease (COPD). This study has been reviewed and approved by the appropriate regulatory body, e.g. Institutional Review Board (IRB) or Independent Ethics Committee (IEC). Key App Features: - Patient Onboarding – complete study app registration and education - Activities – complete scheduled or on-demand study tasks and assessments - Dashboard – review overall progress in the study and current activities - Resources – view study information in the Learn section of the app - Profile – manage account details and app settings - Notifications – receive in-app reminders - Telehealth – conduct scheduled virtual visits with your study site About THREAD: THREAD’s® purpose is to leverage its clinical research platform to enable studies for everyone, everywhere. The company’s uniquely combined clinical research technology and consulting services help life science organizations to design, operate, and scale next-generation research studies and electronic clinical outcome assessments (eCOA) programs for participants, sites, and study teams. Through its comprehensive platform and scientific expertise, THREAD empowers studies to be accessible, efficient, and centered on the patient.

Screenshots

Suvoda4 screens
Cardinal Study4 screens

Verdict

The call

The clearest difference is update cadence: Suvoda at monthly against Cardinal Study's every 3 months. Cardinal Study's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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

Suvoda ships an update monthly, Cardinal Study every 3 months. Both last shipped on October 7, 2026.

Scorecard2 real differences · 8 level
Suvoda versus Cardinal Study: the parameters behind the verdict, then further details
ParameterSuvodaCardinal Study
PriceFreeFree
Rating2.9 (10 ratings) — better—
Positive reviews16.7% of reviews—
Number of ratings10 — better—
Update frequencyMonthly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.5 — better
Further details — not scored
Size249 MB72 MB
Age rating4+17+
DeveloperSuvoda LLCHello Thread

In-app purchases

None

Suvoda

No in-app purchases

None

Cardinal Study

No in-app purchases

Questions

Is Suvoda free?
Suvoda is free to download, with no in-app purchases.
Is Cardinal Study free?
Cardinal Study is free to download, with no in-app purchases.
Do Suvoda or Cardinal Study have ads?
Neither Suvoda nor Cardinal Study shows ads.
Which is updated more often, Suvoda or Cardinal Study?
Suvoda ships an update monthly, and Cardinal Study every 3 months. Most recently, Suvoda was updated on October 7, 2026 and Cardinal Study on October 7, 2026.

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