# Scanenergi vs Butterfly ID

The clearest difference is update cadence: Butterfly ID at fortnightly against Scanenergi's every 2 months. Scanenergi's advantage is iOS requirement (12.4 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Scanenergi ships an update every 2 months, Butterfly ID fortnightly. The most recent releases landed on October 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Scanenergi | Butterfly ID |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 20 MB | 37 MB |
| Requires iOS | **12.4** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Iterator IT](https://appshunter.io/developer/1349682596) | [Mathias Mosgaard](https://appshunter.io/developer/1875297174) |

## What reviewers say

### Scanenergi

[App page](https://appshunter.io/ios/app/scanenergi/id1497312770)

**Features:** macOS Compatibility

**In-app purchases:** none


### Butterfly ID

[App page](https://appshunter.io/ios/app/butterfly-id/id6783060008)

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

**In-app purchases:** none


## Frequently asked questions

### Is Scanenergi free?

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

### Is Butterfly ID free?

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

### Do Scanenergi or Butterfly ID have ads?

Neither Scanenergi nor Butterfly ID shows ads.

### Which is updated more often, Scanenergi or Butterfly ID?

Scanenergi ships an update every 2 months, and Butterfly ID fortnightly. Most recently, Scanenergi was updated on October 9, 2026 and Butterfly ID on October 31, 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.*