# E vs TT02 DFU Tool

The clearest difference is update cadence: E at every 3 weeks against TT02 DFU Tool's every 33 months. TT02 DFU Tool's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

E ships an update every 3 weeks, TT02 DFU Tool every 33 months. The most recent releases landed on August 29, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | E | TT02 DFU Tool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 33 months |
| Size | 55 MB | 42 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Passtech co., ltd](https://appshunter.io/developer/1230326855) | [SYSGRATION](https://appshunter.io/developer/833548921) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-smart-admin/id1470342050)

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

**In-app purchases:** none


### TT02 DFU Tool

[App page](https://appshunter.io/ios/app/tt02-dfu-tool/id1527034166)

**In-app purchases:** none


## Frequently asked questions

### Is E free?

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

### Is TT02 DFU Tool free?

TT02 DFU Tool is free to download, with no in-app purchases.

### Do E or TT02 DFU Tool have ads?

Neither E nor TT02 DFU Tool shows ads.

### Which is updated more often, E or TT02 DFU Tool?

E ships an update every 3 weeks, and TT02 DFU Tool every 33 months. Most recently, E was updated on August 29, 2026 and TT02 DFU Tool on September 16, 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.*