# Tradyn vs OneArbitrage

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

Both are free to download. OneArbitrage sells 1 in-app purchase, starting at $24.99 per month. Tradyn asks for nothing beyond the download.

Tradyn ships an update every 2 months, OneArbitrage every 2 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Tradyn | OneArbitrage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/onearbitrage-stock-arbitrage/id6804910185/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | — | Subscription |
| Size | 40 MB | 63 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [EQUIDITY TECHNOLOGIES L.L.C](https://appshunter.io/developer/1873038715) | [OneArbitrage, LLC](https://appshunter.io/developer/6804910187) |

## What reviewers say

### Tradyn

[App page](https://appshunter.io/ios/app/tradyn/id6758460552)

**Features:** macOS Compatibility

**In-app purchases:** none


### OneArbitrage

[App page](https://appshunter.io/ios/app/onearbitrage-stock-arbitrage/id6804910185)

Manage your stock arbitrage account and track trading activity. Connect your brokerage, automate workflows, and view earnings. Offers a free trial for new members.

**Highlights:** Connect U.S. brokerage accounts, Track reverse stock split arbitrage (RSA), View earnings and trading activity, Manage referrals and payouts, Automate RSA workflows, Manage account settings and billing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneArbitrage Monthly | $24.99 | per month |


## Frequently asked questions

### Is Tradyn free?

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

### Is OneArbitrage free?

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

### Do Tradyn or OneArbitrage have ads?

Neither Tradyn nor OneArbitrage shows ads.

### Which is updated more often, Tradyn or OneArbitrage?

Tradyn ships an update every 2 months, and OneArbitrage every 2 days. Most recently, Tradyn was updated on October 31, 2026 and OneArbitrage 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.*