# Escala de Notas vs Lab4U

The clearest difference is review sentiment: Escala de Notas at 90% against Lab4U's 36%. Escala de Notas also leads on in-app purchases (none vs 4) and rating (4.7 vs 4.5). Lab4U's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 3 months). On price, ratings volume and device support there is nothing between them.

Both are free to download. Lab4U sells 4 one-off in-app purchases. Escala de Notas asks for nothing beyond the download.

Escala de Notas holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 7 and 10 respectively. Written reviews point the same way: 90% of Escala de Notas's written reviews are positive against 36% of Lab4U's.

Escala de Notas ships an update every 3 months, Lab4U every 2 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Escala de Notas | Lab4U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7 ratings)](https://appshunter.io/ios/app/escala-de-notas/id569493229/reviews)** | [4.5 (10 ratings)](https://appshunter.io/ios/app/lab4u/id1049405068/reviews) |
| Number of ratings | 7 | **10** |
| Positive reviews | **90.5% of reviews** | 36.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 42 MB | 105 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chalalo](https://appshunter.io/developer/547959614) | [Lab4U Inc.](https://appshunter.io/developer/1049405067) |

## What reviewers say

### Escala de Notas

[App page](https://appshunter.io/ios/app/escala-de-notas/id569493229)

This app helps educators calculate student averages and generate grading scales with customizable requirements. It also supports calculating PSU scores based on user-defined factors, making it a versatile tool for teachers.

**Highlights:** Generate grading scales, Calculate student averages, Customizable percentage requirements, Calculate PSU scores, Configurable factors for PSU

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

**In-app purchases:** none


### Lab4U

[App page](https://appshunter.io/ios/app/lab4u/id1049405068)

This app transforms your device into a scientific tool for hands-on biology, physics, and chemistry experiments. Explore real-time data using your phone's sensors to learn and teach science in an engaging, inquiry-based manner.

**Highlights:** Real-time sensor experiments, Biology, physics, and chemistry labs, Inquiry-Based Learning methodology, Curriculum-aligned content, Scientific thinking development, Device camera, microphone, and motion sensor integration

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lab4physics Trial | Free | one-time |
| Lab4U Trial | Free | one-time |
| Lab4Physics Premium | $45.99 | one-time |
| Lab4U Premium | $45.99 | one-time |


## Frequently asked questions

### Is Escala de Notas free?

Escala de Notas is free to download, with no in-app purchases.

### Is Lab4U free?

Lab4U is free to download, with in-app purchases available.

### Which has better reviews, Escala de Notas or Lab4U?

Escala de Notas is rated higher. Escala de Notas averages 4.7 out of 5 from 7 ratings, while Lab4U averages 4.5 from 10 ratings.

### Do Escala de Notas or Lab4U have ads?

Escala de Notas shows ads; Lab4U does not.

### Which is updated more often, Escala de Notas or Lab4U?

Escala de Notas ships an update every 3 months, and Lab4U every 2 weeks. Most recently, Escala de Notas was updated on October 23, 2026 and Lab4U on October 24, 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.*