# The Great Lock In Challenge vs Testosterone Tracker

The Great Lock In Challenge and Testosterone Tracker are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. The Great Lock In Challenge sells 2 in-app purchases, starting at $3.99 per 7 days and Testosterone Tracker sells 4 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | The Great Lock In Challenge | Testosterone Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/testosterone-tracker-t-boost/id6762186497/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 45 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [THIERRY VICTOR E DE BELDER](https://appshunter.io/developer/1831371632) | [Anton Dimas](https://appshunter.io/developer/1892278343) |

## What reviewers say

### The Great Lock In Challenge

[App page](https://appshunter.io/ios/app/the-great-lock-in-challenge/id6752290945)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lock In Pro Weekly | $3.99 | per 7 days |
| Lock In Pro Yearly | $49.99 | per year |


### Testosterone Tracker

[App page](https://appshunter.io/ios/app/testosterone-tracker-t-boost/id6762186497)

Scan food barcodes or ingredient labels to understand their impact on testosterone levels. Track key health pillars and receive personalized daily protocols for men's hormonal health optimization.

**Highlights:** Barcode food scanning, AI ingredient label scanner, T-Impact Score, 7 key health pillars tracking, Personalized daily action checklist, AI face health analysis, HealthKit integration

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| T-Boost Scan Weekly Pro | $7.99 | per 7 days |
| T-Boost Scan Weekly | $14.99 | per 7 days |
| 3 Months – Intro Offer | $24.99 | per 3 months |
| T-Boost Scan 3 Months | $49.99 | per 3 months |


## Frequently asked questions

### Is The Great Lock In Challenge free?

The Great Lock In Challenge is free to download, with in-app purchases available.

### Is Testosterone Tracker free?

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

### Do The Great Lock In Challenge or Testosterone Tracker have ads?

Neither The Great Lock In Challenge nor Testosterone Tracker shows ads.

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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.*