# Promptimmo vs Blybahn

The clearest difference is ads: Blybahn at none against Promptimmo's shown. Promptimmo's advantage is iOS requirement (13.0 vs 15.3). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Promptimmo sells 2 one-off in-app purchases and Blybahn sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Promptimmo ships an update fortnightly, Blybahn every 2 weeks. The most recent releases landed on September 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Promptimmo | Blybahn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 84 MB | 77 MB |
| Requires iOS | **13.0** | 15.3 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [GEONIA](https://appshunter.io/developer/1720157918) | [Zooma B.V.](https://appshunter.io/developer/418861795) |

## What reviewers say

### Promptimmo

[App page](https://appshunter.io/ios/app/promptimmo/id6473921077)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter | $0.99 | one-time |
| Promptimmo regular | $1.99 | one-time |


### Blybahn

[App page](https://appshunter.io/ios/app/blybahn/id6745085451)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 diamonds | $1.00 | one-time |
| 50 diamonds | $3.99 | one-time |
| 100 diamonds | $8.99 | one-time |
| 250 diamonds | $22.99 | one-time |
| 500 diamonds | $44.99 | one-time |
| 1000 diamonds | $89.99 | one-time |


## Frequently asked questions

### Is Promptimmo free?

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

### Is Blybahn free?

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

### Do Promptimmo or Blybahn have ads?

Promptimmo shows ads; Blybahn does not.

### Which is updated more often, Promptimmo or Blybahn?

Promptimmo ships an update fortnightly, and Blybahn every 2 weeks. Most recently, Promptimmo was updated on September 16, 2026 and Blybahn on September 14, 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.*