# GRE® Test Prep by Galvanize vs Potential Converter

The clearest difference is rating: Potential Converter at 5.0 against GRE® Test Prep by Galvanize's 4.5. GRE® Test Prep by Galvanize's advantage is ratings volume (206 vs 1) and device support (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Potential Converter holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: GRE® Test Prep by Galvanize has 206 ratings behind it against 1, so its average is the more settled of the two.

GRE® Test Prep by Galvanize ships an update every 7 months, Potential Converter every 6 months. The most recent releases landed on October 22, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | GRE® Test Prep by Galvanize | Potential Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (206 ratings)](https://appshunter.io/ios/app/gre-test-prep-by-galvanize/id1018728564/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/potential-converter/id6760157743/reviews)** |
| Number of ratings | **206** | 1 |
| Positive reviews | 85.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 28 MB | 0 MB |
| Requires iOS | **13.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ENTRAYN EDUCATION TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1018728563) | [Dianzhao Lin](https://appshunter.io/developer/1882906950) |

## What reviewers say

### GRE® Test Prep by Galvanize

[App page](https://appshunter.io/ios/app/gre-test-prep-by-galvanize/id1018728564)

Prepare for the GRE exam with a comprehensive app offering hundreds of practice questions and detailed explanations. Track your progress, predict your score, and gauge your readiness for the Math and Verbal sections. Study with friends and access exclusive formula cheat sheets.

**Highlights:** Hundreds of GRE-style practice questions, Detailed explanations for each question, GRE score predictor, Exam readiness indicator, Timed practice tests, Study with friends feature, Quant formula cheat sheet

**In-app purchases:** none

**What reviewers like**

- 📚 Comprehensive GRE practice questions covering all sections
- 💡 Detailed explanations for each answer
- ⏱️ Timed questions to practice pacing
- 🎯 Goal-setting feature with progress tracking
- 📱 Convenient on-the-go study tool

**What reviewers complain about**

- 🐛 App crashes frequently on certain iOS versions
- 🔐 Excessive data collection requirements
- 📵 Login and account creation issues
- ⚠️ Blank display on iPad
- 🔄 Questions fail to load after extended use

**Reported bugs**

- App crashes within 1 second on iOS 15
- Phone verification field not working
- Sign-in functionality broken
- Questions don't load after multiple practice sessions
- Spinning wheel animation freezes when loading questions

**Requested features**

- Simplified onboarding process without excessive data requirements
- Option to pay for app instead of writing reviews
- Progress reset functionality
- Improved iPad compatibility
- Better offline functionality


### Potential Converter

[App page](https://appshunter.io/ios/app/potential-converter/id6760157743)

This tool helps electrochemists, researchers, and students quickly convert measured potentials between various reference electrode scales. It supports 19 common electrodes and provides educational information, working offline with an intuitive interface.

**Highlights:** Convert between 19 common reference electrodes, Instant, real-time conversions, Supports SHE, Ag/AgCl, SCE, MSE, and more, Educational information on reference electrodes, Clean, intuitive interface, Offline functionality, Copy results with one tap

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

**In-app purchases:** none


## Frequently asked questions

### Is GRE® Test Prep by Galvanize free?

GRE® Test Prep by Galvanize is free to download, with no in-app purchases.

### Is Potential Converter free?

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

### Which has better reviews, GRE® Test Prep by Galvanize or Potential Converter?

Potential Converter is rated higher. GRE® Test Prep by Galvanize averages 4.5 out of 5 from 206 ratings, while Potential Converter averages 5.0 from 1 ratings.

### Do GRE® Test Prep by Galvanize or Potential Converter have ads?

Neither GRE® Test Prep by Galvanize nor Potential Converter shows ads.

### Which is updated more often, GRE® Test Prep by Galvanize or Potential Converter?

GRE® Test Prep by Galvanize ships an update every 7 months, and Potential Converter every 6 months. Most recently, GRE® Test Prep by Galvanize was updated on October 22, 2026 and Potential Converter on October 5, 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.*