# ABC Rainbow Flash Card vs Geometry Shape Calc Pro

The clearest difference is in-app purchases: ABC Rainbow Flash Card at none against Geometry Shape Calc Pro's 1. ABC Rainbow Flash Card also leads on iOS requirement (6.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Geometry Shape Calc Pro sells 1 one-off in-app purchase. ABC Rainbow Flash Card asks for nothing beyond the download.

ABC Rainbow Flash Card ships an update every 15 months, Geometry Shape Calc Pro every 9 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ABC Rainbow Flash Card | Geometry Shape Calc Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/geometry-shape-calc-pro/id6755380819/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 9 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 19 MB | 37 MB |
| Requires iOS | **6.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YSD HK LIMITED](https://appshunter.io/developer/391328734) | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) |

## What reviewers say

### ABC Rainbow Flash Card

[App page](https://appshunter.io/ios/app/abc-rainbow-flash-card/id906245837)

This educational app offers an interactive flashcard experience with a rainbow-themed interface. Users can touch colors to hear and see words, and test their spelling by dictating them. It's a portable and engaging learning tool suitable for all ages.

**Highlights:** Interactive flashcards, Rainbow color presentation, Audio word pronunciation, Spelling dictation test, Portable learning tool, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases:** none


### Geometry Shape Calc Pro

[App page](https://appshunter.io/ios/app/geometry-shape-calc-pro/id6755380819)

This app provides fast and accurate calculations for over 50 geometric shapes. It's designed for students, engineers, and anyone needing to compute measurements like area, perimeter, and volume. Share your results instantly with a clean, user-friendly interface.

**Highlights:** Calculates measurements for 50+ geometric shapes, Computes area, perimeter, and volume, Fast and accurate results, Clean and user-friendly interface, Instant result sharing, Ideal for students and professionals

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $9.99 | one-time |


## Frequently asked questions

### Is ABC Rainbow Flash Card free?

ABC Rainbow Flash Card is free to download, with no in-app purchases.

### Is Geometry Shape Calc Pro free?

Geometry Shape Calc Pro is free to download, with in-app purchases available.

### Do ABC Rainbow Flash Card or Geometry Shape Calc Pro have ads?

Neither ABC Rainbow Flash Card nor Geometry Shape Calc Pro shows ads.

### Which is updated more often, ABC Rainbow Flash Card or Geometry Shape Calc Pro?

ABC Rainbow Flash Card ships an update every 15 months, and Geometry Shape Calc Pro every 9 months. Most recently, ABC Rainbow Flash Card was updated on October 14, 2026 and Geometry Shape Calc Pro on October 7, 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.*