# Nuclide Chart vs KAIRAKU

The clearest difference is in-app purchases: KAIRAKU at none against Nuclide Chart's 1. KAIRAKU also leads on iOS requirement (15.0 vs 17.0). Nuclide Chart's advantage is ads (none vs shown) and update cadence (daily vs every 6 days). On price and device support there is nothing between them.

Both are free to download. Nuclide Chart sells 1 one-off in-app purchase. KAIRAKU asks for nothing beyond the download.

Nuclide Chart ships an update daily, KAIRAKU every 6 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Nuclide Chart | KAIRAKU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 6 days |
| Size | 15 MB | 34 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peer Jansen](https://appshunter.io/developer/1859289195) | [Fuji Bit Inc.](https://appshunter.io/developer/1874205957) |

## What reviewers say

### Nuclide Chart

[App page](https://appshunter.io/ios/app/nuclide-chart/id6756217497)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nuclide Chart Pro | $2.99 | one-time |


### KAIRAKU

[App page](https://appshunter.io/ios/app/kairaku/id6768781085)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nuclide Chart free?

Nuclide Chart is free to download, with in-app purchases available.

### Is KAIRAKU free?

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

### Do Nuclide Chart or KAIRAKU have ads?

KAIRAKU shows ads; Nuclide Chart does not.

### Which is updated more often, Nuclide Chart or KAIRAKU?

Nuclide Chart ships an update daily, and KAIRAKU every 6 days. Most recently, Nuclide Chart was updated on November 5, 2026 and KAIRAKU on October 31, 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.*