# Erchang Fish vs АПБ. Управление ключами

The clearest difference is update cadence: Erchang Fish at every 7 months against АПБ. Управление ключами's every 20 months. Erchang Fish also leads on device support and iOS requirement (9.3 vs 12.2). On price and in-app purchases there is nothing between them.

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

Erchang Fish ships an update every 7 months, АПБ. Управление ключами every 20 months. The most recent releases landed on September 10, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Erchang Fish | АПБ. Управление ключами |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 7 months** | Every 20 months |
| Monetization | Free | — |
| Size | 68 MB | 751 MB |
| Requires iOS | **9.3** | 12.2 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [定敢 刘](https://appshunter.io/developer/1194376703) | [Agroprombank](https://appshunter.io/developer/939554598) |

## What reviewers say

### Erchang Fish

[App page](https://appshunter.io/ios/app/erchang-fish/id1605890664)

This intelligent fish detector app offers a dual-band sonar system with a user-friendly interface. It's designed to be a helpful tool for fishing enthusiasts, providing convenient operation for better angling experiences.

**Highlights:** Dual band intelligent fish detection, Friendly interface, Convenient operation, Fishing helper tool

**Features:** macOS Compatibility

**In-app purchases:** none


### АПБ. Управление ключами

[App page](https://appshunter.io/ios/app/id6477825686)

**In-app purchases:** none


## Frequently asked questions

### Is Erchang Fish free?

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

### Is АПБ. Управление ключами free?

АПБ. Управление ключами is free to download, with no in-app purchases.

### Which is updated more often, Erchang Fish or АПБ. Управление ключами?

Erchang Fish ships an update every 7 months, and АПБ. Управление ключами every 20 months. Most recently, Erchang Fish was updated on September 10, 2026 and АПБ. Управление ключами on September 11, 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.*