# 핀릿 vs Principle

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

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

핀릿 ships an update every 4 months, Principle every 10 days. The most recent releases landed on September 9, 2026 and August 3, 2026 respectively.

## The numbers

| Metric | 핀릿 | Principle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 10 days** |
| Size | 87 MB | 49 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kkk corporation](https://appshunter.io/developer/1773074761) | [주식회사 유자](https://appshunter.io/developer/1851710513) |

## What reviewers say

### 핀릿

[App page](https://appshunter.io/ios/app/mbti/id6736693395)

**Features:** macOS Compatibility

**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 핀릿 free?

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

### Is Principle free?

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

### Do 핀릿 or Principle have ads?

Principle shows ads; 핀릿 does not.

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

핀릿 ships an update every 4 months, and Principle every 10 days. Most recently, 핀릿 was updated on September 9, 2026 and Principle on August 3, 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.*