# TommaTech vs Octopus BMS Lite

The clearest difference is update cadence: TommaTech at every 6 weeks against Octopus BMS Lite's every 12 months. 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.

TommaTech ships an update every 6 weeks, Octopus BMS Lite every 12 months. The most recent releases landed on September 17, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | TommaTech | Octopus BMS Lite |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 12 months |
| Monetization | Free | — |
| Size | 68 MB | 32 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [TommaTech GmbH](https://appshunter.io/developer/1564701290) | [Shanghai Xinzhiheng Electronic Technology Co., Ltd.](https://appshunter.io/developer/1745374020) |

## What reviewers say

### TommaTech

[App page](https://appshunter.io/ios/app/tommatech/id1564701288)

Monitor your inverter's real-time performance, including power generation and consumption. Analyze operational data at a minute level to ensure optimal inverter function.

**Highlights:** Real-time inverter data viewing, Minute-level statistical analysis, Online status tracking, Power generation monitoring, Power consumption tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### Octopus BMS Lite

[App page](https://appshunter.io/ios/app/octopus-bms-lite/id6505063095)

**In-app purchases:** none


## Frequently asked questions

### Is TommaTech free?

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

### Is Octopus BMS Lite free?

Octopus BMS Lite is free to download, with no in-app purchases.

### Do TommaTech or Octopus BMS Lite have ads?

Neither TommaTech nor Octopus BMS Lite shows ads.

### Which is updated more often, TommaTech or Octopus BMS Lite?

TommaTech ships an update every 6 weeks, and Octopus BMS Lite every 12 months. Most recently, TommaTech was updated on September 17, 2026 and Octopus BMS Lite on September 9, 2026.

---

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