# TCD Research vs Verenigma

The clearest difference is in-app purchases: TCD Research at none against Verenigma's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Verenigma sells 1 in-app purchase, starting at $9.99 per month. TCD Research asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | TCD Research | Verenigma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (12 ratings)](https://appshunter.io/ios/app/tcd-research/id1510744878/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 81 MB | 38 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Claire Gillan-Anderson](https://appshunter.io/developer/1510705636) | [VERENIGMA LIMITED](https://appshunter.io/developer/1656992583) |

## What reviewers say

### TCD Research

[App page](https://appshunter.io/ios/app/tcd-research/id1510744878)

Engage in brain games and cognitive challenges to contribute to scientific research on dementia and mental health. Your participation helps researchers understand risk factors and develop new interventions.

**Highlights:** Cognitive puzzle games, Dementia research contribution, Mental health awareness, Mood logging, Memory challenges, Risk factor analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Verenigma

[App page](https://appshunter.io/ios/app/verenigma/id6444808458)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $9.99 | per month |


## Frequently asked questions

### Is TCD Research free?

TCD Research is free to download, with no in-app purchases.

### Is Verenigma free?

Verenigma is free to download, with in-app purchases available.

### Do TCD Research or Verenigma have ads?

Neither TCD Research nor Verenigma shows ads.

### Which is updated more often, TCD Research or Verenigma?

TCD Research ships an update every 2 months, and Verenigma every 2 months. Most recently, TCD Research was updated on October 24, 2026 and Verenigma on October 27, 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.*