# PassFM vs 胖鱼信使

The clearest difference is review sentiment: 胖鱼信使 at 100% against PassFM's 44%. 胖鱼信使 also leads on rating (5.0 vs 3.7) and update cadence (every 2 weeks vs every 3 months). PassFM's advantage is ratings volume (9 vs 3). On ads, in-app purchases, monetization model and device support there is nothing between them.

PassFM costs $2.99 and 胖鱼信使 $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

胖鱼信使 holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 9 and 3 respectively. Written reviews point the same way: 44% of PassFM's written reviews are positive against 100% of 胖鱼信使's.

PassFM ships an update every 3 months, 胖鱼信使 every 2 weeks. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | PassFM | 胖鱼信使 |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | [3.7 (9 ratings)](https://appshunter.io/ios/app/passfm-private-file-manager/id980936769/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ai/id6448448856/reviews)** |
| Number of ratings | **9** | 3 |
| Positive reviews | 44.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 29 MB | 43 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [刘生 林](https://appshunter.io/developer/948768792) | [迪远 王](https://appshunter.io/developer/1487823903) |

## What reviewers say

### PassFM

[App page](https://appshunter.io/ios/app/passfm-private-file-manager/id980936769)

Securely store and manage your private files, including photos, videos, documents, and notes. This app offers a private browser for safe web activity and allows for easy file import, export, and sharing. Protect your sensitive information with password protection and local storage.

**Highlights:** Password-protected file storage, Private photo and video viewer/player, Built-in private web browser, Import, export, and share files, Private contact and note management, WiFi file transfer

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

**In-app purchases:** none


### 胖鱼信使

[App page](https://appshunter.io/ios/app/ai/id6448448856)

This app uses machine learning to intelligently identify and block spam text messages offline, ensuring your inbox remains clean. It prioritizes user privacy with no internet access or data collection, and is completely free of ads and in-app purchases.

**Highlights:** Offline AI spam detection, Machine learning technology, No internet access required, No data collection, Ad-free experience, No in-app purchases, No push notifications, Regular model updates

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is PassFM free?

PassFM costs $2.99, with no in-app purchases.

### Is 胖鱼信使 free?

胖鱼信使 costs $0.99, with no in-app purchases.

### Which has better reviews, PassFM or 胖鱼信使?

胖鱼信使 is rated higher. PassFM averages 3.7 out of 5 from 9 ratings, while 胖鱼信使 averages 5.0 from 3 ratings.

### Do PassFM or 胖鱼信使 have ads?

Neither PassFM nor 胖鱼信使 shows ads.

### Which is updated more often, PassFM or 胖鱼信使?

PassFM ships an update every 3 months, and 胖鱼信使 every 2 weeks. Most recently, PassFM was updated on November 1, 2026 and 胖鱼信使 on November 7, 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.*