# 大侦探 vs 零下记忆

The clearest difference is iOS requirement: 大侦探 at 10.0 against 零下记忆's 12.0. On price, update cadence, ads 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.

大侦探 ships an update every 16 months, 零下记忆 every 14 months. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | 大侦探 | 零下记忆 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/id6443759062/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 76.2% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 16 months | **Every 14 months** |
| Size | 132 MB | 466 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [煜 蒋](https://appshunter.io/developer/570632778) | [欢 刘](https://appshunter.io/developer/1334601605) |

## What reviewers say

### 大侦探

[App page](https://appshunter.io/ios/app/id1330118560)

**Features:** macOS Compatibility

**In-app purchases:** none


### 零下记忆

[App page](https://appshunter.io/ios/app/id6443759062)

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

**In-app purchases:** none


## Frequently asked questions

### Is 大侦探 free?

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

### Is 零下记忆 free?

零下记忆 is free to download, with no in-app purchases.

### Do 大侦探 or 零下记忆 have ads?

Both 大侦探 and 零下记忆 show ads.

### Which is updated more often, 大侦探 or 零下记忆?

大侦探 ships an update every 16 months, and 零下记忆 every 14 months. Most recently, 大侦探 was updated on October 12, 2026 and 零下记忆 on September 30, 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.*