# 75 Challenge Tracker vs Winterlock

The clearest difference is in-app purchases: Winterlock at none against 75 Challenge Tracker's 1. 75 Challenge Tracker's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 75 Challenge Tracker sells 1 in-app purchase, starting at $1.99 per month. Winterlock asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 75 Challenge Tracker | Winterlock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/75-challenge-tracker/id6757087060/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Freemium | — |
| Size | 3 MB | 35 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Diego Gonzalez](https://appshunter.io/developer/836967202) | [GCL Tech](https://appshunter.io/developer/1784049183) |

## What reviewers say

### 75 Challenge Tracker

[App page](https://appshunter.io/ios/app/75-challenge-tracker/id6757087060)

This app helps you track and complete the 75-Day Challenge, a program designed to build discipline and resilience. Log daily habits, monitor streaks, and stay accountable with friends to achieve personal transformation.

**Highlights:** Daily habit tracking, 75-Day streak monitoring, Friend invitations for shared accountability, Accountability reminders, Progress visualization, Customizable daily tasks

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Subscription | $1.99 | 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 Challenge Tracker free?

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

### Is Winterlock free?

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

### Do 75 Challenge Tracker or Winterlock have ads?

Winterlock shows ads; 75 Challenge Tracker does not.

### Which is updated more often, 75 Challenge Tracker or Winterlock?

75 Challenge Tracker ships an update every 3 days, and Winterlock every 3 days. Most recently, 75 Challenge Tracker was updated on June 1, 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.*