PurEst® vs VIAVILab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PurEst®
Read full descriptionHide full description
PurEst is a mobile application for the sugarcane farming industry offered by SASRI (South African Sugarcane Research Institute) that provides the user with crop ripening recommendations based on Brix readings.
VIAVILab
Read full descriptionHide full description
The VIAVILab app instantly identifies substances on the field with their near infrared spectra. The application is part of a complete data management ecosystem covering from data acquisition to quality monitoring. A MircoNIR infrared spectrometer is required to acquire new spectra.
Screenshots
Verdict
The clearest difference is update cadence: VIAVILab at every 2 weeks against PurEst®'s every 5 months. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PurEst® ships an update every 5 months, VIAVILab every 2 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | PurEst® | VIAVILab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 18 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | Modality Apps | NIRLAB Forensics Sarl |
In-app purchases
PurEst®
No in-app purchases
VIAVILab
No in-app purchases
