# Douglas App vs Bulb

The clearest difference is in-app purchases: Douglas App at none against Bulb's 3. Douglas App also leads on iOS requirement (15.1 vs 17.0). Bulb's advantage is update cadence (every 5 days vs every 14 months). On price, ads and device support there is nothing between them.

Both are free to download. Bulb sells 3 in-app purchases, starting at $2.99 per 7 days. Douglas App asks for nothing beyond the download.

Douglas App ships an update every 14 months, Bulb every 5 days. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Douglas App | Bulb |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 days** |
| Size | 26 MB | 40 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Douglas Business School (Hong Kong) Limited](https://appshunter.io/developer/1713495431) | [Danis Gaiazov](https://appshunter.io/developer/1798511426) |

## What reviewers say

### Douglas App

[App page](https://appshunter.io/ios/app/douglas-app/id6470349455)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bulb

[App page](https://appshunter.io/ios/app/bulb-read-to-learn-languages/id6742458314)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Monthly | $6.99 | per month |
| Premium Annual | $49.99 | per year |


## Frequently asked questions

### Is Douglas App free?

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

### Is Bulb free?

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

### Do Douglas App or Bulb have ads?

Neither Douglas App nor Bulb shows ads.

### Which is updated more often, Douglas App or Bulb?

Douglas App ships an update every 14 months, and Bulb every 5 days. Most recently, Douglas App was updated on October 20, 2026 and Bulb 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.*