# One Training Delivery vs Bulb

One Training Delivery and Bulb are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

One Training Delivery ships an update every 4 months, Bulb every 2 months. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | One Training Delivery | Bulb |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 188 MB | 5 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SHAGGY OWL s.r.l.s.](https://appshunter.io/developer/672418138) | [THE BULB FACTORY S.R.L. IN FORMA ABBREVIATO BULB SRL](https://appshunter.io/developer/1616503844) |

## What reviewers say

### One Training Delivery

[App page](https://appshunter.io/ios/app/one-training-delivery/id1602655879)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Bulb

[App page](https://appshunter.io/ios/app/bulb/id1616503842)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One Training Delivery free?

One Training Delivery is free to download, with no in-app purchases.

### Is Bulb free?

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

### Do One Training Delivery or Bulb have ads?

Neither One Training Delivery nor Bulb shows ads.

### Which is updated more often, One Training Delivery or Bulb?

One Training Delivery ships an update every 4 months, and Bulb every 2 months. Most recently, One Training Delivery was updated on October 5, 2026 and Bulb on October 1, 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.*