# Principle vs Stock DCA Plan

The clearest difference is in-app purchases: Stock DCA Plan at none against Principle's 4. Principle's advantage is iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Principle sells 4 one-off in-app purchases. Stock DCA Plan asks for nothing beyond the download.

Principle ships an update every 2 months, Stock DCA Plan monthly. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Principle | Stock DCA Plan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Size | 57 MB | 46 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [주식회사 유자](https://appshunter.io/developer/1851710513) | [Younghwi Kim](https://appshunter.io/developer/1810888279) |

## What reviewers say

### Principle

[App page](https://appshunter.io/ios/app/principle-stock-backtest-sim/id6776831023)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Tokens | $1.99 | one-time |
| 33 Tokens | $4.99 | one-time |
| 115 Tokens | $14.99 | one-time |
| 600 Tokens | $59.99 | one-time |


### Stock DCA Plan

[App page](https://appshunter.io/ios/app/stock-dca-plan-backtestlab/id6806941718)

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

**In-app purchases:** none


## Frequently asked questions

### Is Principle free?

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

### Is Stock DCA Plan free?

Stock DCA Plan is free to download, with no in-app purchases.

### Do Principle or Stock DCA Plan have ads?

Both Principle and Stock DCA Plan show ads.

### Which is updated more often, Principle or Stock DCA Plan?

Principle ships an update every 2 months, and Stock DCA Plan monthly. Most recently, Principle was updated on October 31, 2026 and Stock DCA Plan on November 6, 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.*