# DecayMate vs Nuclide Chart

The clearest difference is in-app purchases: DecayMate at none against Nuclide Chart's 1. Nuclide Chart's advantage is update cadence (daily vs every 5 weeks) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

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

DecayMate ships an update every 5 weeks, Nuclide Chart daily. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | DecayMate | Nuclide Chart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Daily** |
| Size | 1 MB | 15 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ludovico Pestarino](https://appshunter.io/developer/1856700574) | [Peer Jansen](https://appshunter.io/developer/1859289195) |

## What reviewers say

### DecayMate

[App page](https://appshunter.io/ios/app/decaymate/id6755844272)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is DecayMate free?

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

### Is Nuclide Chart free?

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

### Do DecayMate or Nuclide Chart have ads?

Neither DecayMate nor Nuclide Chart shows ads.

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

DecayMate ships an update every 5 weeks, and Nuclide Chart daily. Most recently, DecayMate was updated on October 9, 2026 and Nuclide Chart on October 1, 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.*