# i vs TC66C

i and TC66C both sit at 2.1 stars, but that hides the real split: 33% of TC66C's written reviews are positive against 10% of i's. TC66C also leads on iOS requirement (9.0 vs 11.0). i's advantage is ratings volume (83 vs 6). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 2.1 for i against 2.0 for TC66C. That said, the two scores are not equally well evidenced: i has 83 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 10% of i's written reviews are positive against 33% of TC66C's.

i ships an update every 3 months, TC66C every 2 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | i | TC66C |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (83 ratings)](https://appshunter.io/ios/app/i-usb-storer/id1079877477/reviews)** | [2.0 (6 ratings)](https://appshunter.io/ios/app/tc66c/id1445111707/reviews) |
| Number of ratings | **83** | 6 |
| Positive reviews | 9.9% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 30 MB | 37 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [裕雨 程](https://appshunter.io/developer/1079877476) | [亮亮 刘](https://appshunter.io/developer/1439150212) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-usb-storer/id1079877477)

Access and manage files on USB drives directly from your Apple device. Stream music, watch videos, and view photos stored on your USB flash drive. It also facilitates photo synchronization.

**Highlights:** Open USB Flash Drive files, Stream music, Watch videos, View photos, Sync photos, USB 3.0 card reader compatible

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient for transferring files
- 🚀 Fast file transfer between device and computer
- 💡 Useful for expanding storage on iOS devices
- 🔒 Secure data backup

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Compatibility issues with newer iOS versions
- 🐛 Unable to recognize external storage device
- 🐛 Buggy performance, files not transferring properly
- 👎 Poor user interface and language translation

**Reported bugs**

- App crashes when trying to export files
- External storage not detected by app
- Corrupted or lost data after file transfers
- Compatibility issues with iPhone X and newer models

**Requested features**

- Add support for landscape mode
- Improve video playback capabilities
- Allow for better file management and organization
- Provide option to change app language


### TC66C

[App page](https://appshunter.io/ios/app/tc66c/id1445111707)

Connect to a Type-C tester via Bluetooth to view and control its data. This utility app allows for real-time monitoring and management of tester functions directly from your device.

**Highlights:** Bluetooth connectivity, Type-C tester data display, Tester control functions, Real-time monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is TC66C free?

TC66C is free to download, with no in-app purchases.

### Which has better reviews, i or TC66C?

i is rated higher. i averages 2.1 out of 5 from 83 ratings, while TC66C averages 2.0 from 6 ratings.

### Do i or TC66C have ads?

Neither i nor TC66C shows ads.

### Which is updated more often, i or TC66C?

i ships an update every 3 months, and TC66C every 2 months. Most recently, i was updated on November 2, 2026 and TC66C on November 2, 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.*