# Gradual Nightlight vs ADCAT

The clearest difference is in-app purchases: ADCAT at none against Gradual Nightlight's 1. Gradual Nightlight's advantage is update cadence (every 2 weeks vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Gradual Nightlight sells 1 one-off in-app purchase. ADCAT asks for nothing beyond the download.

Gradual Nightlight ships an update every 2 weeks, ADCAT every 8 months. The most recent releases landed on October 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Gradual Nightlight | ADCAT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 8 months |
| Size | 3 MB | 96 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alterscope Solutions LLC](https://appshunter.io/developer/1551052588) | [Alcides Vieira](https://appshunter.io/developer/1046524680) |

## What reviewers say

### Gradual Nightlight

[App page](https://appshunter.io/ios/app/gradual-nightlight/id6468366809)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gradual Nightlight: US English | $0.99 | one-time |


### ADCAT

[App page](https://appshunter.io/ios/app/adcat/id6599855295)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gradual Nightlight free?

Gradual Nightlight is free to download, with in-app purchases available.

### Is ADCAT free?

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

### Do Gradual Nightlight or ADCAT have ads?

Neither Gradual Nightlight nor ADCAT shows ads.

### Which is updated more often, Gradual Nightlight or ADCAT?

Gradual Nightlight ships an update every 2 weeks, and ADCAT every 8 months. Most recently, Gradual Nightlight was updated on October 10, 2026 and ADCAT on September 23, 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.*