# Butterfly Training vs Lae Logbook

The clearest difference is in-app purchases: Butterfly Training at none against Lae Logbook's 2. Butterfly Training also leads on iOS requirement (9.0 vs 17.0). Lae Logbook's advantage is update cadence (every 2 months vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Lae Logbook sells 2 in-app purchases, starting at $2.99 per month. Butterfly Training asks for nothing beyond the download.

Butterfly Training ships an update every 4 months, Lae Logbook every 2 months. The most recent releases landed on September 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Butterfly Training | Lae Logbook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 40 MB | 5 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [BUTTERFLY AERO TRAINING](https://appshunter.io/developer/1481266120) | [Kefis Technology Limited](https://appshunter.io/developer/1745041739) |

## What reviewers say

### Butterfly Training

[App page](https://appshunter.io/ios/app/butterfly-training/id1153427889)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lae Logbook

[App page](https://appshunter.io/ios/app/lae-logbook/id6502331367)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LaeLogbook Pro Monthly | $2.99 | per month |
| LaeLogbook Pro Annual | $24.99 | per year |


## Frequently asked questions

### Is Butterfly Training free?

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

### Is Lae Logbook free?

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

### Do Butterfly Training or Lae Logbook have ads?

Neither Butterfly Training nor Lae Logbook shows ads.

### Which is updated more often, Butterfly Training or Lae Logbook?

Butterfly Training ships an update every 4 months, and Lae Logbook every 2 months. Most recently, Butterfly Training was updated on September 24, 2026 and Lae Logbook on October 10, 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.*