# EE Calculators and Notes vs Undergrounds REE Review

The clearest difference is in-app purchases: EE Calculators and Notes at none against Undergrounds REE Review's 5. EE Calculators and Notes also leads on iOS requirement (12.0 vs 15.0). Undergrounds REE Review's advantage is update cadence (every 3 weeks vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Undergrounds REE Review sells 5 one-off in-app purchases. EE Calculators and Notes asks for nothing beyond the download.

EE Calculators and Notes ships an update every 4 months, Undergrounds REE Review every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | EE Calculators and Notes | Undergrounds REE Review |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/ee-calculators-and-notes/id6642680188/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 37 MB | 96 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Muhammad Faizan Ali Khan](https://appshunter.io/developer/1734026777) | [Clibourn Quiapo](https://appshunter.io/developer/1812381912) |

## What reviewers say

### EE Calculators and Notes

[App page](https://appshunter.io/ios/app/ee-calculators-and-notes/id6642680188)

This app provides electrical engineering students and professionals with comprehensive notes, exam preparation MCQs, essential books, IQ tests, and powerful calculators. It offers offline access and regular updates to enhance learning and problem-solving skills in the field.

**Highlights:** Comprehensive electrical engineering notes, MCQs for exam preparation, Curated library of essential books, IQ tests for problem-solving, Powerful electrical engineering calculators, Offline access to content

**Features:** macOS Compatibility

**In-app purchases:** none


### Undergrounds REE Review

[App page](https://appshunter.io/ios/app/undergrounds-ree-review/id6745921735)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math | $0.99 | one-time |
| ESAS | $0.99 | one-time |
| EE | $0.99 | one-time |
| Full Enrollment | $0.99 | one-time |
| Refresher | $0.99 | one-time |


## Frequently asked questions

### Is EE Calculators and Notes free?

EE Calculators and Notes is free to download, with no in-app purchases.

### Is Undergrounds REE Review free?

Undergrounds REE Review is free to download, with in-app purchases available.

### Do EE Calculators and Notes or Undergrounds REE Review have ads?

Neither EE Calculators and Notes nor Undergrounds REE Review shows ads.

### Which is updated more often, EE Calculators and Notes or Undergrounds REE Review?

EE Calculators and Notes ships an update every 4 months, and Undergrounds REE Review every 3 weeks. Most recently, EE Calculators and Notes was updated on October 24, 2026 and Undergrounds REE Review 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.*