# Subway3D vs Flips

The clearest difference is device support: Flips at 3 against Subway3D's —. Flips also leads on iOS requirement (15.0 vs 18.0). On price 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.

## The numbers

| Metric | Subway3D | Flips |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (16 ratings)](https://appshunter.io/ios/app/flips-smart-flashcards/id6752226363/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 62.5% of reviews |
| In-app purchases | No | No |
| Ads | — | Yes |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Ad-supported |
| Size | 22 MB | 121 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Geoffrey Domm](https://appshunter.io/developer/373378724) | [BitFlap LLC](https://appshunter.io/developer/1728158940) |

## What reviewers say

### Subway3D

[App page](https://appshunter.io/ios/app/subway3d/id6446181722)

**In-app purchases:** none


### Flips

[App page](https://appshunter.io/ios/app/flips-smart-flashcards/id6752226363)

This app uses spaced repetition flashcards to help you learn Japanese vocabulary and phrases. It prioritizes words you're likely to forget and offers various study modes to build consistent learning habits.

**Highlights:** Spaced repetition review, Flashcard and 4-choice modes, Progress tracking and mastery levels, Custom deck creation and import, Smart review reminders, Text-to-Speech pronunciation

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

**In-app purchases:** none


## Frequently asked questions

### Is Subway3D free?

Subway3D is free to download, with no in-app purchases.

### Is Flips free?

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

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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.*