# Testr Labs vs Stacksy

The clearest difference is monetization model: Testr Labs at freemium against Stacksy's subscription. Stacksy's advantage is update cadence (every 2 days vs every 6 days) and ratings volume (16 vs 3). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Testr Labs sells 4 in-app purchases, starting at $1.99 per 7 days and Stacksy sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Testr Labs against 5.0 for Stacksy. That said, the two scores are not equally well evidenced: Stacksy has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Testr Labs ships an update every 6 days, Stacksy every 2 days. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Testr Labs | Stacksy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/testr-labs/id6755664902/reviews) | [5.0 (16 ratings)](https://appshunter.io/ios/app/stacksy/id6782694853/reviews) |
| Number of ratings | 3 | **16** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 2 days** |
| Monetization | **Freemium** | Subscription |
| Size | 3 MB | 65 MB |
| Requires iOS | 18.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kyra Langland](https://appshunter.io/developer/1855378789) | [Velor4 LLC](https://appshunter.io/developer/6782694855) |

## What reviewers say

### Testr Labs

[App page](https://appshunter.io/ios/app/testr-labs/id6755664902)

This app helps men understand how everyday products impact their testosterone levels. Scan items to get a T-Impact Score, identify harmful ingredients, and discover healthier alternatives to improve energy and well-being.

**Highlights:** Scan product barcodes for T-Impact Score, Identify testosterone-killing ingredients, Product ratings (green/yellow/red), Discover healthier product alternatives, Save scans and track daily routine, Daily testosterone-boosting tips

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $4.99 | per month |
| Annual | $39.99 | per year |
| Lifetime Access | $6.99 | one-time |


### Stacksy

[App page](https://appshunter.io/ios/app/stacksy/id6782694853)

Organize and track your personal peptide protocol with this private application. Manage your entire routine, including what peptides to take and when. Offers monthly and yearly subscription plans for full access.

**Highlights:** Organize peptide protocols, Track peptide dosages, Schedule peptide intake, Private routine management, GLP-1 tracking

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacksy Pro (Monthly) | $9.99 | per month |
| Stacksy Pro (Yearly) | $24.99 | per year |
| Stacksy Pro (Yearly) | $24.99 | per year |
| Stacksy Pro (Yearly) | $24.99 | per year |
| Stacksy Pro (Yearly) | $39.99 | per year |


## Frequently asked questions

### Is Testr Labs free?

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

### Is Stacksy free?

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

### Which has better reviews, Testr Labs or Stacksy?

Testr Labs and Stacksy are both rated 5.0 out of 5 on the App Store, from 3 and 16 ratings respectively.

### Do Testr Labs or Stacksy have ads?

Neither Testr Labs nor Stacksy shows ads.

### Which is updated more often, Testr Labs or Stacksy?

Testr Labs ships an update every 6 days, and Stacksy every 2 days. Most recently, Testr Labs was updated on October 17, 2026 and Stacksy on October 11, 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.*