# LingGrid vs SoundLevel

The clearest difference is update cadence: SoundLevel at daily against LingGrid's every 9 days. 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.

LingGrid ships an update every 9 days, SoundLevel daily. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | LingGrid | SoundLevel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/linggrid/id6774998894/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Daily** |
| Monetization | Free | — |
| Size | 4 MB | 5 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [华明 罗](https://appshunter.io/developer/1670053427) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### LingGrid

[App page](https://appshunter.io/ios/app/linggrid/id6774998894)

This app provides a secure digital backup for physical dynamic password cards used for the Jiangsu Gaokao. It allows users to scan or import card images, save encrypted data locally, and quickly look up codes by selecting coordinates. Designed to reduce stress during critical post-exam processes.

**Highlights:** Scan physical password cards, Import photos from album, Recognize 8x8 password grid, Save encrypted data locally, Quick code lookup by coordinates, Digital backup for password cards

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

**In-app purchases:** none


### SoundLevel

[App page](https://appshunter.io/ios/app/soundlevel-noise-estimate/id6790220729)

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

**In-app purchases:** none


## Frequently asked questions

### Is LingGrid free?

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

### Is SoundLevel free?

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

### Do LingGrid or SoundLevel have ads?

Neither LingGrid nor SoundLevel shows ads.

### Which is updated more often, LingGrid or SoundLevel?

LingGrid ships an update every 9 days, and SoundLevel daily. Most recently, LingGrid was updated on October 8, 2026 and SoundLevel on October 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.*