# TET LITHIUM vs BLUETTI

The clearest difference is update cadence: BLUETTI at every 3 weeks against TET LITHIUM's every 32 months. TET LITHIUM's advantage is iOS requirement (9.0 vs 15.0). 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.

TET LITHIUM ships an update every 32 months, BLUETTI every 3 weeks. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TET LITHIUM | BLUETTI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (1.5K ratings)](https://appshunter.io/ios/app/bluetti/id1550568336/reviews)** |
| Number of ratings | — | **1.5K** |
| Positive reviews | — | 66.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 7 MB | 122 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [宇文 钟](https://appshunter.io/developer/1541529609) | [Shenzhen Poweroak Newener Co., Ltd.](https://appshunter.io/developer/1281393663) |

## What reviewers say

### TET LITHIUM

[App page](https://appshunter.io/ios/app/tet-lithium/id1542310415)

**Features:** macOS Compatibility

**In-app purchases:** none


### BLUETTI

[App page](https://appshunter.io/ios/app/bluetti/id1550568336)

Manage your portable power station remotely. Monitor real-time energy usage, adjust settings for optimal performance, and receive instant alerts. Schedule charging and keep your device updated with the latest firmware.

**Highlights:** Real-time power monitoring, Remote setting adjustments, Instant status alerts, Scheduled charging, Firmware updates, User forum

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick connection
- 💡 Useful features
- 🔋 Reliable power backup

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔒 Forced account login
- 🤔 Cluttered interface
- 🔋 Battery drain issues

**Reported bugs**

- Bluetooth pairing problems
- Inconsistent WiFi connectivity
- Incorrect data reporting
- Forced app updates

**Requested features**

- Landscape mode support
- Estimated time remaining
- Customizable notifications
- Improved data analytics


## Frequently asked questions

### Is TET LITHIUM free?

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

### Is BLUETTI free?

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

### Do TET LITHIUM or BLUETTI have ads?

Neither TET LITHIUM nor BLUETTI shows ads.

### Which is updated more often, TET LITHIUM or BLUETTI?

TET LITHIUM ships an update every 32 months, and BLUETTI every 3 weeks. Most recently, TET LITHIUM was updated on October 15, 2026 and BLUETTI on October 25, 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.*