# SmarterNoise vs LASH SIGN

The clearest difference is in-app purchases: LASH SIGN at none against SmarterNoise's 2. LASH SIGN also leads on ads (none vs shown). SmarterNoise's advantage is update cadence (every 6 weeks vs every 23 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SmarterNoise sells 2 one-off in-app purchases. LASH SIGN asks for nothing beyond the download.

SmarterNoise ships an update every 6 weeks, LASH SIGN every 23 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SmarterNoise | LASH SIGN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (117 ratings)](https://appshunter.io/ios/app/smarternoise/id1384299042/reviews)** | — |
| Number of ratings | **117** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 23 months |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 11 MB |
| Requires iOS | 12.0 | **11.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Johan Rogard](https://appshunter.io/developer/1384299041) | [Clint Reed](https://appshunter.io/developer/1485537349) |

## What reviewers say

### SmarterNoise

[App page](https://appshunter.io/ios/app/smarternoise/id1384299042)

This app measures sound levels, records audio and video, and provides information on noise exposure risks. It features smart icons to help users understand the impact of noise on health and cognitive performance. Save, share, and archive your recordings with this comprehensive tool.

**Highlights:** Sound level measurement, Video and audio recording, Noise exposure risk information, Smart icons for health impact, Archive and sharing of recordings, Calibration, Location and time display

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Long-term measurement | $1.99 | one-time |
| Remove ads | $2.99 | one-time |


### LASH SIGN

[App page](https://appshunter.io/ios/app/lash-sign/id1499806351)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmarterNoise free?

SmarterNoise is free to download, with in-app purchases available.

### Is LASH SIGN free?

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

### Do SmarterNoise or LASH SIGN have ads?

SmarterNoise shows ads; LASH SIGN does not.

### Which is updated more often, SmarterNoise or LASH SIGN?

SmarterNoise ships an update every 6 weeks, and LASH SIGN every 23 months. Most recently, SmarterNoise was updated on October 24, 2026 and LASH SIGN on October 25, 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.*