Testr Labs vs Stacksy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Testr Labs
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.
- 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
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Testr is the fast, simple way for men to take control of their testosterone. Just scan any product — food, grooming, supplements, household items — and instantly see whether it boosts or kills your testosterone. Testr breaks down ingredients, rates each product, and explains exactly why it impacts your hormonal health. Find better alternatives, fix hidden lifestyle killers, and build habits that actually make you feel stronger, clearer, and more energized. WHAT TESTR HELPS YOU DO - Scan barcodes instantly and get a T-Impact Score - Identify testosterone-killing ingredients - See clear green / yellow / red product ratings - Learn the science behind how ingredients affect T levels - Discover healthier product alternatives - Save your scans and track your daily routine - Get daily testosterone-boosting tips - Compare products before you buy - Unlock deeper explanations with Testr Premium - Chat with the assistant for health advice (coming soon) Whether you want more energy, better performance in the gym, improved focus, or optimized habits — Testr gives you the data you need to level up. Privacy Policy: https://www.notion.so/PRIVACY-POLICY-2bc241e238ab805cb05bc47b3a01e38e Terms & Conditions: https://www.notion.so/TERMS-CONDITIONS-2bc241e238ab806c815ef46588ff97ed
Stacksy
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.
- Organize peptide protocols
- Track peptide dosages
- Schedule peptide intake
- Private routine management
- GLP-1 tracking
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Stacksy is a simple, private way to organize and track your personal peptide protocol. Your whole routine in one place: what you're taking and when to take it. Stacksy requires a Premium auto-renewable subscription to use the app: - Stacksy Premium (Monthly): $9.99 / month - Stacksy Premium (Yearly): $39.99 / year Payment is charged to your Apple ID at purchase confirmation. Your subscription auto-renews unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. Privacy Policy: https://stacksy.netlify.app/privacy Terms of Use (EULA): https://stacksy.netlify.app/terms
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Testr Labs | Stacksy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (16 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 | 16 — better |
| Update frequency | Every 6 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium — better | Subscription |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 65 MB |
| Age rating | 4+ | 17+ |
| Developer | Kyra Langland | Velor4 LLC |
Customer experience
Testr Labs
Stacksy
In-app purchases
Testr Labs
- Weekly7 Days trial$1.997 Days
- Monthly7 Days trial$4.991 Month
- Annual7 Days trial$39.991 Year
- Lifetime Access$6.99
Stacksy
- Stacksy Pro (Monthly)$9.991 Month
- Stacksy Pro (Yearly)3 Days trial$24.991 Year
- Stacksy Pro (Yearly)7 Days trial$24.991 Year
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- Stacksy Pro (Yearly)$24.991 Year
- Stacksy Pro (Yearly)3 Days trial$39.991 Year
