# Butterfly Training vs RosterSwift

The clearest difference is in-app purchases: Butterfly Training at none against RosterSwift's 2. Butterfly Training also leads on device support (3 vs 1) and iOS requirement (9.0 vs 17.0). RosterSwift's advantage is update cadence (every 2 days vs every 4 months). On price and ads there is nothing between them.

Both are free to download. RosterSwift sells 2 in-app purchases, starting at $1.99 per month. Butterfly Training asks for nothing beyond the download.

Butterfly Training ships an update every 4 months, RosterSwift every 2 days. The most recent releases landed on September 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Butterfly Training | RosterSwift |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 40 MB | 94 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BUTTERFLY AERO TRAINING](https://appshunter.io/developer/1481266120) | [Squawk Labs](https://appshunter.io/developer/1798978415) |

## What reviewers say

### Butterfly Training

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

**Features:** macOS Compatibility

**In-app purchases:** none


### RosterSwift

[App page](https://appshunter.io/ios/app/rosterswift/id6758941760)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RosterSwift (Monthly) | $1.99 | per month |
| RosterSwift (Annual) | $12.99 | per year |


## Frequently asked questions

### Is Butterfly Training free?

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

### Is RosterSwift free?

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

### Do Butterfly Training or RosterSwift have ads?

Neither Butterfly Training nor RosterSwift shows ads.

### Which is updated more often, Butterfly Training or RosterSwift?

Butterfly Training ships an update every 4 months, and RosterSwift every 2 days. Most recently, Butterfly Training was updated on September 24, 2026 and RosterSwift on October 28, 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.*