# 75 Medium Challenge vs LensCal

The clearest difference is update cadence: LensCal at every 2 days against 75 Medium Challenge's every 8 months. 75 Medium Challenge's advantage is iOS requirement (16.4 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 75 Medium Challenge sells 2 in-app purchases, starting at $9.99 per year and LensCal sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

75 Medium Challenge ships an update every 8 months, LensCal every 2 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 75 Medium Challenge | LensCal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (48 ratings)](https://appshunter.io/ios/app/75-medium-challenge-75-days/id6466105793/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 132 MB | 30 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Contractor Pro Software LLC](https://appshunter.io/developer/1615065297) | [Sergio Adrian Fernandez Figueredo](https://appshunter.io/developer/6774435713) |

## What reviewers say

### 75 Medium Challenge

[App page](https://appshunter.io/ios/app/75-medium-challenge-75-days/id6466105793)

This app guides users through a 75-day fitness and wellness program. It encourages daily workouts, reading, hydration, and healthy eating with progress tracking and personalized insights.

**Highlights:** Daily 45-minute workouts, 10 pages of daily reading, Minimum 3 liters of daily hydration, Healthy meal suggestions, Progress tracking, Personalized insights

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 75 Medium Pro | $9.99 | per year |
| Unlocks All Features | $6.99 | one-time |


### LensCal

[App page](https://appshunter.io/ios/app/lenscal/id6794762992)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $6.99 | per month |
| Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is 75 Medium Challenge free?

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

### Is LensCal free?

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

### Do 75 Medium Challenge or LensCal have ads?

Neither 75 Medium Challenge nor LensCal shows ads.

### Which is updated more often, 75 Medium Challenge or LensCal?

75 Medium Challenge ships an update every 8 months, and LensCal every 2 days. Most recently, 75 Medium Challenge was updated on October 24, 2026 and LensCal on October 10, 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.*