# PF One vs 灵光

The clearest difference is rating: PF One at 5.0 against 灵光's 3.9. PF One also leads on iOS requirement (13.0 vs 15.0). 灵光's advantage is ratings volume (76 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PF One holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: 灵光 has 76 ratings behind it against 2, so its average is the more settled of the two.

PF One ships an update every 2 weeks, 灵光 every 9 days. The most recent releases landed on August 1, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | PF One | 灵光 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pf-one/id6751495309/reviews)** | [3.9 (76 ratings)](https://appshunter.io/ios/app/ai/id6751496092/reviews) |
| Number of ratings | 2 | **76** |
| Positive reviews | — | 77.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free | Free |
| Size | 28 MB | 271 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Shenzhen Pailefei Consulting Services Co., Ltd.](https://appshunter.io/developer/1832721362) | [Alipay (Hangzhou) Technology Co., Ltd.](https://appshunter.io/developer/333206292) |

## What reviewers say

### PF One

[App page](https://appshunter.io/ios/app/pf-one/id6751495309)

This aviation dictionary and pilot toolbox offers a vast database of over 20,000 aviation terms, with Chinese-English support. It features category browsing, search, airport codes, and practical tools like an interview checklist and flight time calculator. Access information offline and benefit from continuous updates.

**Highlights:** Extensive aviation database (20,000+ entries), Chinese-English paired entries, Category filters and search, Airport and code reference, Pilot interview checklist, Flight time calculator, Offline access

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

**In-app purchases:** none


### 灵光

[App page](https://appshunter.io/ios/app/ai/id6751496092)

This AI assistant integrates language, image, voice, and data understanding to generate multimodal outputs like 3D models, audio, charts, and animations. It offers features for quick app generation, interactive learning, and intelligent visual exploration, making complex information simple.

**Highlights:** Generate interactive apps in 30 seconds, Visualize complex knowledge with 3D models, illustrations, and animations, Understand and generate images and videos, Real-time scene understanding and visual Q&A, Interactive maps for planning and exploration, Summarize financial reports and documents

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

**In-app purchases:** none


## Frequently asked questions

### Is PF One free?

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

### Is 灵光 free?

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

### Which has better reviews, PF One or 灵光?

PF One is rated higher. PF One averages 5.0 out of 5 from 2 ratings, while 灵光 averages 3.9 from 76 ratings.

### Do PF One or 灵光 have ads?

Neither PF One nor 灵光 shows ads.

### Which is updated more often, PF One or 灵光?

PF One ships an update every 2 weeks, and 灵光 every 9 days. Most recently, PF One was updated on August 1, 2026 and 灵光 on September 26, 2026.

---

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