# 75 Challenge Tracker vs Open Water Spots

The clearest difference is update cadence: 75 Challenge Tracker at every 3 days against Open Water Spots's every 4 weeks. Open Water Spots's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 75 Challenge Tracker sells 1 in-app purchase, starting at $1.99 per month and Open Water Spots sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

75 Challenge Tracker ships an update every 3 days, Open Water Spots every 4 weeks. The most recent releases landed on June 1, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | 75 Challenge Tracker | Open Water Spots |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 weeks |
| Monetization | Freemium | — |
| Size | 3 MB | 9 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Diego Gonzalez](https://appshunter.io/developer/836967202) | [Alexandru Coci](https://appshunter.io/developer/6782218326) |

## 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 |


### Open Water Spots

[App page](https://appshunter.io/ios/app/open-water-spots/id6782218324)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Open Water Spots Pro | $5.99 | per month |
| Open Water Spots Pro | $39.99 | per year |


## Frequently asked questions

### Is 75 Challenge Tracker free?

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

### Is Open Water Spots free?

Open Water Spots is free to download, with in-app purchases available.

### Do 75 Challenge Tracker or Open Water Spots have ads?

Neither 75 Challenge Tracker nor Open Water Spots shows ads.

### Which is updated more often, 75 Challenge Tracker or Open Water Spots?

75 Challenge Tracker ships an update every 3 days, and Open Water Spots every 4 weeks. Most recently, 75 Challenge Tracker was updated on June 1, 2026 and Open Water Spots on September 7, 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.*