# Super Vocabulary Builder vs eigenCalc

The clearest difference is update cadence: eigenCalc at monthly against Super Vocabulary Builder's every 21 months. Super Vocabulary Builder's advantage is iOS requirement (9.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

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

Super Vocabulary Builder ships an update every 21 months, eigenCalc monthly. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Super Vocabulary Builder | eigenCalc |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Monthly** |
| Monetization | Free | — |
| Size | 76 MB | 2 MB |
| Requires iOS | **9.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Propersh LLC](https://appshunter.io/developer/862587473) | [Luis Acevedo-Arreguin](https://appshunter.io/developer/1642773653) |

## What reviewers say

### Super Vocabulary Builder

[App page](https://appshunter.io/ios/app/super-vocabulary-builder/id1178318672)

This app helps children expand their English vocabulary with a large preset word list and the ability to add custom words. Parents can track their child's progress and mastery of words through organized worksets. It offers interactive features like pronunciation recording and visual aids for each word.

**Highlights:** Extensive preset word list, Customizable word sets, Progress tracking for parents, Pronunciation recording, Visual word representation, Word mastery marking

**Features:** macOS Compatibility

**In-app purchases:** none


### eigenCalc

[App page](https://appshunter.io/ios/app/eigencalc/id6503222785)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Super Vocabulary Builder free?

Super Vocabulary Builder is free to download, with no in-app purchases.

### Is eigenCalc free?

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

### Do Super Vocabulary Builder or eigenCalc have ads?

Neither Super Vocabulary Builder nor eigenCalc shows ads.

### Which is updated more often, Super Vocabulary Builder or eigenCalc?

Super Vocabulary Builder ships an update every 21 months, and eigenCalc monthly. Most recently, Super Vocabulary Builder was updated on November 6, 2026 and eigenCalc on November 8, 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.*