# power2max vs SIGEYI

The clearest difference is update cadence: SIGEYI at every 3 months against power2max's every 15 months. power2max's advantage is iOS requirement (12.0 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.

power2max ships an update every 15 months, SIGEYI every 3 months. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | power2max | SIGEYI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.3 (48 ratings)](https://appshunter.io/ios/app/power2max/id1380651289/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 8.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 40 MB | 48 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Saxonar GmbH Projektmanagement, Gerateentwicklung, Hard- und Software](https://appshunter.io/developer/1570243109) | [Sigeyi Technology (Guangzhou) Co., Ltd.](https://appshunter.io/developer/1736871513) |

## What reviewers say

### power2max

[App page](https://appshunter.io/ios/app/power2max/id1380651289)

This utility app allows users to connect with their power2max power meter. It facilitates the registration of the device, installation of upgrades, and updating of the power meter's firmware.

**Highlights:** Register power meter, Install upgrades, Update firmware, Power meter management

**Features:** macOS Compatibility

**In-app purchases:** none


### SIGEYI

[App page](https://appshunter.io/ios/app/sigeyi/id1449815400)

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

**In-app purchases:** none


## Frequently asked questions

### Is power2max free?

power2max is free to download, with no in-app purchases.

### Is SIGEYI free?

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

### Do power2max or SIGEYI have ads?

Neither power2max nor SIGEYI shows ads.

### Which is updated more often, power2max or SIGEYI?

power2max ships an update every 15 months, and SIGEYI every 3 months. Most recently, power2max was updated on September 17, 2026 and SIGEYI on September 15, 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.*