# SizeRight vs TradeLock

The clearest difference is in-app purchases: SizeRight at none against TradeLock's 9. SizeRight also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). TradeLock's advantage is ads (none vs shown) and update cadence (every 6 days vs every 3 weeks). On price there is nothing between them.

Both are free to download. TradeLock sells 9 in-app purchases, starting at $12.99 per month. SizeRight asks for nothing beyond the download.

SizeRight ships an update every 3 weeks, TradeLock every 6 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SizeRight | TradeLock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tradelock-trading-discipline/id6790983168/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 26 MB | 24 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Alexander Bacsa](https://appshunter.io/developer/1895938685) | [Timothy Smart](https://appshunter.io/developer/1589383477) |

## What reviewers say

### SizeRight

[App page](https://appshunter.io/ios/app/sizeright-position-size/id6764857338)

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

**In-app purchases:** none


### TradeLock

[App page](https://appshunter.io/ios/app/tradelock-trading-discipline/id6790983168)

This app helps traders enforce their trading rules by locking access to trading applications during set times or after specific loss thresholds are met. It aims to prevent impulsive decisions and maintain trading discipline, especially during prop firm challenges.

**Highlights:** Session window locking, App blocking for trading platforms, Daily loss limit enforcement, Trade count limits, Discipline streak tracking, Trading journal and notes, Calendar of trading days

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TradeLock Journal Monthly | $12.99 | per month |
| TradeLock Protect Monthly | $29.99 | per month |
| TradeLock Desk Monthly | $49.99 | per month |
| TradeLock Monthly | $49.99 | per month |
| Journal Annual | $99.99 | per year |
| TradeLock Journal Annual | $99.99 | per month |
| TradeLock Protect Annual | $249.99 | per year |
| TradeLock Annual | $349.99 | per year |
| TradeLock Desk Annual | $349.99 | per year |


## Frequently asked questions

### Is SizeRight free?

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

### Is TradeLock free?

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

### Do SizeRight or TradeLock have ads?

SizeRight shows ads; TradeLock does not.

### Which is updated more often, SizeRight or TradeLock?

SizeRight ships an update every 3 weeks, and TradeLock every 6 days. Most recently, SizeRight was updated on October 25, 2026 and TradeLock on October 24, 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.*