Greentest vs Viscera
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Greentest
This app connects to a smart device to analyze nitrate levels in food and water hardness. It also detects background radioactivity. Ensure Bluetooth is enabled on your mobile device for seamless connection and testing.
- Nitrate level analysis
- Water hardness testing (TDS)
- Background radioactivity detection
- Bluetooth device connectivity
- Certified safety and accuracy
Read full descriptionHide full description
Greentest is an APP based device for smart express analyses of nitrate levels in fresh fruit, vegetables, meat and fish, as well as water hardness (TDS) and background radioactivity levels detector in the surrounding area and in the particular objects. To start testing, simply switch on your bluetooth on your mobile phone or tablet and get the APP connected to your device. The safety and accuracy of the device is internationally certified and proved by CE, FDA, TUV, RoHs, CQC, etc.
Viscera
Read full descriptionHide full description
Viscera – Estimate Your Visceral Fat Area (VFA) Viscera is a simple health tool that helps estimate visceral fat area (VFA) using validated formulas for men and women. Visceral fat is the fat stored around internal organs, which may be associated with metabolic health and overall well-being. How it works Input a few basic body measurements. The app calculates your estimated visceral fat area (VFA). Separate formulas are applied for men and women, based on scientific research. Source The calculation formulas are derived from research by the Luxembourg Institute of Health: Amaro J, Santos O, Marques O, et al. Anthropometric surrogate models for visceral fat: a new insight. European Journal of Clinical Nutrition (2021). Read the study Disclaimer Viscera is intended for informational purposes only. It does not provide a medical diagnosis or treatment advice. Results are estimates and should not replace consultation with a qualified healthcare professional. If you have concerns about your health, body composition, or risk factors, always seek advice from your doctor or healthcare provider.
Screenshots
Verdict
The clearest difference is price: Greentest at Free against Viscera's $1.99. Greentest also leads on iOS requirement (15.6 vs 18.5). Viscera's advantage is update cadence (monthly vs every 3 months). On ads, in-app purchases and device support 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
Greentest is free to download; Viscera costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Greentest ships an update every 3 months, Viscera monthly. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.
| Parameter | Greentest | Viscera |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 27.8% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.5 |
| Further details — not scored | ||
| Size | 41 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | Shenzhen Greentest Science and Technology Co.Ltd | Hans Christian Christensen |
In-app purchases
Greentest
No in-app purchases
Viscera
No in-app purchases
