# 75 Glow vs Winterlock

The clearest difference is in-app purchases: Winterlock at none against 75 Glow's 2. Winterlock also leads on update cadence (every 3 days vs every 2 months) and iOS requirement (16.4 vs 18.0). 75 Glow's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 75 Glow sells 2 in-app purchases, starting at $9.99 per 7 days. Winterlock asks for nothing beyond the download.

75 Glow ships an update every 2 months, Winterlock every 3 days. The most recent releases landed on September 8, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 75 Glow | Winterlock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 69 MB | 35 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Maktub Technologies LLC](https://appshunter.io/developer/1810607121) | [GCL Tech](https://appshunter.io/developer/1784049183) |

## What reviewers say

### 75 Glow

[App page](https://appshunter.io/ios/app/75-glow/id6783179752)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 75glow.us | $9.99 | per 7 days |
| 75glow.premium | $29.99 | per month |


### Winterlock

[App page](https://appshunter.io/ios/app/winterlock-winter-arc-tracker/id6807602638)

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

**In-app purchases:** none


## Frequently asked questions

### Is 75 Glow free?

75 Glow is free to download, with in-app purchases available.

### Is Winterlock free?

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

### Do 75 Glow or Winterlock have ads?

Winterlock shows ads; 75 Glow does not.

### Which is updated more often, 75 Glow or Winterlock?

75 Glow ships an update every 2 months, and Winterlock every 3 days. Most recently, 75 Glow was updated on September 8, 2026 and Winterlock on September 20, 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.*