# Flashside vs NIDU

The clearest difference is update cadence: NIDU at every 3 days against Flashside's every 5 weeks. 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.

Flashside ships an update every 5 weeks, NIDU every 3 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Flashside | NIDU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flashside/id1518971790/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free | — |
| Size | 54 MB | 3 MB |
| Requires iOS | 18.6 | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CQUELLE GmbH](https://appshunter.io/developer/1457513606) | [Julia Nikitina](https://appshunter.io/developer/1522068003) |

## What reviewers say

### Flashside

[App page](https://appshunter.io/ios/app/flashside/id1518971790)

Create, study, and master any subject with this free flashcard application. It offers offline access, custom deck creation, and smart review features to enhance learning and retention for students and lifelong learners.

**Highlights:** Create custom flashcards, Study offline, Smart review modes, Multi-subject support, 100% free, no ads or subscriptions

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

**In-app purchases:** none


### NIDU

[App page](https://appshunter.io/ios/app/nidu/id6798823464)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flashside free?

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

### Is NIDU free?

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

### Do Flashside or NIDU have ads?

Neither Flashside nor NIDU shows ads.

### Which is updated more often, Flashside or NIDU?

Flashside ships an update every 5 weeks, and NIDU every 3 days. Most recently, Flashside was updated on October 8, 2026 and NIDU on October 10, 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.*