# TrainFlow vs Duelr

The clearest difference is iOS requirement: Duelr at 15.1 against TrainFlow's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

TrainFlow ships an update every 4 weeks, Duelr every 2 weeks. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | TrainFlow | Duelr |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Size | 56 MB | 128 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [THX IT Oy](https://appshunter.io/developer/1741943093) | [Duelr Ltd](https://appshunter.io/developer/1859807168) |

## What reviewers say

### TrainFlow

[App page](https://appshunter.io/ios/app/trainflow-training-plans/id6744355617)

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

**In-app purchases:** none


### Duelr

[App page](https://appshunter.io/ios/app/duelr/id6762086039)

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

**In-app purchases:** none


## Frequently asked questions

### Is TrainFlow free?

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

### Is Duelr free?

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

### Do TrainFlow or Duelr have ads?

Neither TrainFlow nor Duelr shows ads.

### Which is updated more often, TrainFlow or Duelr?

TrainFlow ships an update every 4 weeks, and Duelr every 2 weeks. Most recently, TrainFlow was updated on September 30, 2026 and Duelr 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.*