# 마이포폴 vs Principle

The clearest difference is in-app purchases: 마이포폴 at none against Principle's 4. 마이포폴 also leads on ads (none vs shown) and update cadence (every 4 days vs every 10 days). Principle's advantage is iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

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

마이포폴 ships an update every 4 days, Principle every 10 days. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 마이포폴 | Principle |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 10 days |
| Monetization | Free | — |
| Size | 69 MB | 49 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YT Lab](https://appshunter.io/developer/6774625279) | [주식회사 유자](https://appshunter.io/developer/1851710513) |

## What reviewers say

### 마이포폴

[App page](https://appshunter.io/ios/app/isa/id6774625277)

This app allows users to simulate and design their long-term investment plans, focusing on retirement and ISA accounts. It calculates post-tax returns based on various scenarios and investment strategies, offering historical backtesting and comparison features.

**Highlights:** Investment plan simulation, Post-tax return calculation, ISA and pension account tax differences, Goal-based investment examples, Historical data backtesting, Save and compare investment plans, Explore public investment designs

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 마이포폴 free?

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

### Is Principle free?

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

### Do 마이포폴 or Principle have ads?

Principle shows ads; 마이포폴 does not.

### Which is updated more often, 마이포폴 or Principle?

마이포폴 ships an update every 4 days, and Principle every 10 days. Most recently, 마이포폴 was updated on October 11, 2026 and Principle on October 14, 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.*