# Suvoda vs Cardinal Study

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.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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

## The numbers

| Metric | Suvoda | Cardinal Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (10 ratings)](https://appshunter.io/ios/app/suvoda/id6468680420/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | — |
| Size | 249 MB | 72 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Suvoda LLC](https://appshunter.io/developer/1050177591) | [Hello Thread](https://appshunter.io/developer/996237890) |

## What reviewers say

### Suvoda

[App page](https://appshunter.io/ios/app/suvoda/id6468680420)

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

**In-app purchases:** none


### Cardinal Study

[App page](https://appshunter.io/ios/app/cardinal-study/id6764213269)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*