# ELSB Lite vs Classroom Noise Meter

The clearest difference is update cadence: Classroom Noise Meter at every 2 weeks against ELSB Lite's every 2 months. ELSB Lite's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ELSB Lite sells 7 one-off in-app purchases and Classroom Noise Meter sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ELSB Lite ships an update every 2 months, Classroom Noise Meter every 2 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | ELSB Lite | Classroom Noise Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/elsb-lite/id825069440/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 236 MB | 18 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Attainment Company](https://appshunter.io/developer/403989333) | [Felix Leitenberger](https://appshunter.io/developer/1488329664) |

## What reviewers say

### ELSB Lite

[App page](https://appshunter.io/ios/app/elsb-lite/id825069440)

This app provides systematic instruction for print and phonemic awareness, featuring seven levels and ongoing assessments for personalized student progress. Research supports its effectiveness as a literacy program.

**Highlights:** Systematic print and phonemic awareness instruction, Seven distinct learning levels, Ongoing student assessments, Personalized progress tracking, Research-backed effectiveness

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Level 1 | $21.99 | one-time |
| Level 2 | $21.99 | one-time |
| Level 3 | $21.99 | one-time |
| Level 4 | $21.99 | one-time |
| Level 5 | $21.99 | one-time |
| Level 6 | $21.99 | one-time |
| Level 7 | $21.99 | one-time |


### Classroom Noise Meter

[App page](https://appshunter.io/ios/app/classroom-noise-meter-ruhe/id6817002986)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ruhe Pro – Monthly | $1.99 | per month |
| Ruhe Pro – Yearly | $8.99 | per year |
| Ruhe Pro – Lifetime | $22.99 | one-time |


## Frequently asked questions

### Is ELSB Lite free?

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

### Is Classroom Noise Meter free?

Classroom Noise Meter is free to download, with in-app purchases available.

### Do ELSB Lite or Classroom Noise Meter have ads?

Neither ELSB Lite nor Classroom Noise Meter shows ads.

### Which is updated more often, ELSB Lite or Classroom Noise Meter?

ELSB Lite ships an update every 2 months, and Classroom Noise Meter every 2 weeks. Most recently, ELSB Lite was updated on November 1, 2026 and Classroom Noise Meter on November 6, 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.*