# ECOPOWER vs OnBD2

The clearest difference is price: ECOPOWER at Free against OnBD2's $3.99. ECOPOWER also leads on iOS requirement (12.0 vs 26.0). OnBD2's advantage is update cadence (every 10 days vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

ECOPOWER is free to download; OnBD2 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ECOPOWER ships an update every 4 months, OnBD2 every 10 days. The most recent releases landed on September 29, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | ECOPOWER | OnBD2 |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Size | 169 MB | 6 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [灏 陈](https://appshunter.io/developer/1701910948) | [Ruben Gonzalez](https://appshunter.io/developer/1885517252) |

## What reviewers say

### ECOPOWER

[App page](https://appshunter.io/ios/app/ecopower/id6459699557)

**In-app purchases:** none


### OnBD2

[App page](https://appshunter.io/ios/app/onbd2/id6761005696)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is ECOPOWER free?

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

### Is OnBD2 free?

OnBD2 costs $3.99, with no in-app purchases.

### Do ECOPOWER or OnBD2 have ads?

Neither ECOPOWER nor OnBD2 shows ads.

### Which is updated more often, ECOPOWER or OnBD2?

ECOPOWER ships an update every 4 months, and OnBD2 every 10 days. Most recently, ECOPOWER was updated on September 29, 2026 and OnBD2 on September 8, 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.*