# D2O Learning vs Companion.

The clearest difference is in-app purchases: Companion. at none against D2O Learning's 2. Companion. also leads on update cadence (every 4 days vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. D2O Learning sells 2 one-off in-app purchases. Companion. asks for nothing beyond the download.

D2O Learning ships an update every 7 months, Companion. every 4 days. Both last shipped on October 15, 2026.

## The numbers

| Metric | D2O Learning | Companion. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 days** |
| Size | 85 MB | 37 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [TagMango Inc](https://appshunter.io/developer/1611765353) | [Wasiullah Khan](https://appshunter.io/developer/1813835337) |

## What reviewers say

### D2O Learning

[App page](https://appshunter.io/ios/app/d2o-learning/id6480183589)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Team D2O Membership | $0.99 | one-time |
| GEM Certified Professional | $4.99 | one-time |


### Companion.

[App page](https://appshunter.io/ios/app/companion/id6748640575)

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

**In-app purchases:** none


## Frequently asked questions

### Is D2O Learning free?

D2O Learning is free to download, with in-app purchases available.

### Is Companion. free?

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

### Do D2O Learning or Companion. have ads?

Neither D2O Learning nor Companion. shows ads.

### Which is updated more often, D2O Learning or Companion.?

D2O Learning ships an update every 7 months, and Companion. every 4 days. Most recently, D2O Learning was updated on October 15, 2026 and Companion. on October 15, 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.*