# Nailian vs WattEver (EV 배터리 인증서 발급 서비스)

The clearest difference is ads: WattEver (EV 배터리 인증서 발급 서비스) at none against Nailian's shown. WattEver (EV 배터리 인증서 발급 서비스) also leads on update cadence (every 5 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Nailian ships an update every 3 weeks, WattEver (EV 배터리 인증서 발급 서비스) every 5 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Nailian | WattEver (EV 배터리 인증서 발급 서비스) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 47 MB | 57 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Woo Chang Lee](https://appshunter.io/developer/1806621708) | [PMGROW](https://appshunter.io/developer/1544006130) |

## What reviewers say

### Nailian

[App page](https://appshunter.io/ios/app/nailian/id6744244726)

**In-app purchases:** none


### WattEver (EV 배터리 인증서 발급 서비스)

[App page](https://appshunter.io/ios/app/wattever-ev/id6761879798)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nailian free?

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

### Is WattEver (EV 배터리 인증서 발급 서비스) free?

WattEver (EV 배터리 인증서 발급 서비스) is free to download, with no in-app purchases.

### Do Nailian or WattEver (EV 배터리 인증서 발급 서비스) have ads?

Nailian shows ads; WattEver (EV 배터리 인증서 발급 서비스) does not.

### Which is updated more often, Nailian or WattEver (EV 배터리 인증서 발급 서비스)?

Nailian ships an update every 3 weeks, and WattEver (EV 배터리 인증서 발급 서비스) every 5 days. Most recently, Nailian was updated on October 28, 2026 and WattEver (EV 배터리 인증서 발급 서비스) on October 31, 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.*