# Dhamma.org vs O2CO2

The clearest difference is in-app purchases: Dhamma.org at none against O2CO2's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. O2CO2 sells 2 in-app purchases, starting at $3.99 per year. Dhamma.org asks for nothing beyond the download.

Dhamma.org ships an update fortnightly, O2CO2 every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Dhamma.org | O2CO2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (191 ratings)](https://appshunter.io/ios/app/dhammaorg/id1127952631/reviews)** | — |
| Number of ratings | **191** | — |
| Positive reviews | 85.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 134 MB | 353 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAYATGYI U BA KHIN MEMORIAL TRUST OF MASSACHUSSETS, INC](https://appshunter.io/developer/1122785149) | [ELIOTT ROMAIN-SAVARD](https://appshunter.io/developer/6813168270) |

## What reviewers say

### Dhamma.org

[App page](https://appshunter.io/ios/app/dhammaorg/id1127952631)

Explore Vipassana meditation techniques and find residential courses worldwide. Access audio and video resources, apply for courses, and manage your user account. This app offers a path to self-purification through self-observation.

**Highlights:** Learn about Vipassana Meditation, Find worldwide course locations, Search courses by date, region, language, Apply and register for courses, Download/stream audio and video resources, Manage user account and application forms, Access group sitting recordings

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

**In-app purchases:** none


### O2CO2

[App page](https://appshunter.io/ios/app/o2co2/id6813168268)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| O2CO2 Premium Annual | $3.99 | per year |
| O2CO2 Premium Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Dhamma.org free?

Dhamma.org is free to download, with no in-app purchases.

### Is O2CO2 free?

O2CO2 is free to download, with in-app purchases available.

### Do Dhamma.org or O2CO2 have ads?

Neither Dhamma.org nor O2CO2 shows ads.

### Which is updated more often, Dhamma.org or O2CO2?

Dhamma.org ships an update fortnightly, and O2CO2 every 3 weeks. Most recently, Dhamma.org was updated on October 24, 2026 and O2CO2 on October 24, 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.*