# iNeuro40+ vs 75 Soft Challenge Day Tracker

The clearest difference is price: 75 Soft Challenge Day Tracker at Free against iNeuro40+'s $99.99. 75 Soft Challenge Day Tracker also leads on update cadence (every 6 weeks vs every 3 months) and iOS requirement (15.6 vs 17.0). iNeuro40+'s advantage is in-app purchases (none vs 4). On ads and device support there is nothing between them.

75 Soft Challenge Day Tracker is free to download; iNeuro40+ costs $99.99 up front. 75 Soft Challenge Day Tracker sells 4 in-app purchases, starting at $4.99 per month. iNeuro40+ asks for nothing beyond the download.

iNeuro40+ ships an update every 3 months, 75 Soft Challenge Day Tracker every 6 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | iNeuro40+ | 75 Soft Challenge Day Tracker |
| --- | --- | --- |
| Price | $99.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/75-soft-challenge-day-tracker/id6789895923/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | — | Freemium |
| Size | 1 MB | 50 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lawlis' Enterprises](https://appshunter.io/developer/517473701) | [KREATORDEV LLC](https://appshunter.io/developer/1634077382) |

## What reviewers say

### iNeuro40+

[App page](https://appshunter.io/ios/app/ineuro40-plus/id6455302624)

**Features:** macOS Compatibility

**In-app purchases:** none


### 75 Soft Challenge Day Tracker

[App page](https://appshunter.io/ios/app/75-soft-challenge-day-tracker/id6789895923)

Track your progress through the 75 Soft challenge with a daily checklist for workouts, water intake, diet, and reading. This app offers a forgiving streak system, allows you to customize rules, and enables you to share your journey with friends for accountability.

**Highlights:** Daily checklist for 4 rules, Customizable challenge rules, Forgiving streak system, Friend accountability features, Progress photo tracking, Home screen widget, Photo vault

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 75 Soft Pro Monthly | $4.99 | per month |
| 75 Soft Pro Yearly | $19.99 | per year |
| 75 Soft Pro Yearly | $29.99 | per year |
| 75 Soft Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is iNeuro40+ free?

iNeuro40+ costs $99.99, with no in-app purchases.

### Is 75 Soft Challenge Day Tracker free?

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

### Do iNeuro40+ or 75 Soft Challenge Day Tracker have ads?

Neither iNeuro40+ nor 75 Soft Challenge Day Tracker shows ads.

### Which is updated more often, iNeuro40+ or 75 Soft Challenge Day Tracker?

iNeuro40+ ships an update every 3 months, and 75 Soft Challenge Day Tracker every 6 weeks. Most recently, iNeuro40+ was updated on October 27, 2026 and 75 Soft Challenge Day Tracker on October 28, 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.*