# PHK Key vs Surf

The clearest difference is review sentiment: Surf at 96% against PHK Key's 0%. Surf also leads on rating (4.2 vs 1.0) and update cadence (every 5 days vs monthly). PHK Key's advantage is in-app purchases (none vs 4) and iOS requirement (9.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Surf sells 4 in-app purchases, starting at $14.99 per month. PHK Key asks for nothing beyond the download.

Surf holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: Surf has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of PHK Key's written reviews are positive against 96% of Surf's.

PHK Key ships an update monthly, Surf every 5 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PHK Key | Surf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/phk-key/id1331863191/reviews) | **[4.2 (6 ratings)](https://appshunter.io/ios/app/surf-crypto-ai-assistant/id6751790853/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | 0.0% of reviews | **95.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 110 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Phillip Securities (HK) Limited](https://appshunter.io/developer/466984983) | [Cybertino Inc](https://appshunter.io/developer/1703516603) |

## What reviewers say

### PHK Key

[App page](https://appshunter.io/ios/app/phk-key/id1331863191)

This security code generator provides two-factor authentication for online trading. Download it to your mobile device to enhance your account security.

**Highlights:** Two-factor login authentication, Online trading security, Mobile code generation, Enhanced security

**Features:** macOS Compatibility

**In-app purchases:** none


### Surf

[App page](https://appshunter.io/ios/app/surf-crypto-ai-assistant/id6751790853)

This AI-powered assistant analyzes on-chain data, social sentiment, and fundamentals to help users make informed cryptocurrency decisions. It consolidates research, market data, and on-chain analysis into one platform for traders and enthusiasts.

**Highlights:** AI-powered crypto decision-making, On-chain flow analysis, Social sentiment tracking, Fundamental analysis, Cross-chain research, Narrative and opportunity surfacing

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Surf Plus Monthly | $14.99 | per month |
| Surf Pro Monthly | $39.99 | per month |
| Surf Plus Annual | $107.99 | per year |
| Surf Pro Annual | $349.00 | per year |


## Frequently asked questions

### Is PHK Key free?

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

### Is Surf free?

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

### Which has better reviews, PHK Key or Surf?

Surf is rated higher. PHK Key averages 1.0 out of 5 from 1 ratings, while Surf averages 4.2 from 6 ratings.

### Do PHK Key or Surf have ads?

Neither PHK Key nor Surf shows ads.

### Which is updated more often, PHK Key or Surf?

PHK Key ships an update monthly, and Surf every 5 days. Most recently, PHK Key was updated on October 6, 2026 and Surf on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*