WebDuo Pro vs KRL SmartBox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WebDuo Pro
Browse two websites simultaneously, side-by-side, on your iOS device. Enhance productivity by viewing multiple web pages at once. On compatible iPads, you can even view three browsers using multitasking.
- Browse two websites simultaneously
- Side-by-side web viewing
- Supports any iOS device
- Triple browser on compatible iPads
- Multitasking integration
Read full descriptionHide full description
WebDuo is the only app that allows you to browse two websites at the same time (side by side) on any iOS device. Take WebDuo Pro for a spin and let us know what you think! P.S. Get THREE browsers side by side by side if you have the iPad Air 2 , iPad Mini 4, iPad Pro by using multitasking!!
KRL SmartBox
Read full descriptionHide full description
The KRL Smartbox app can be used to retrieve measurement results from the KRL Smartbox via Bluetooth. The measurement results can be supplemented with further information and then exported as a PDF. Using the KRL SmartBox makes it possible to measure the corresponding relative humidity of mineral screeds. Changes in the temperature of the sample can influence the measurement of the humidity above it. During measurements with the KRL method at a temperature of 20°C ±5 °C, the expected maximum humidity deviation is ±2% relative humidity.
Screenshots
Verdict
The clearest difference is price: KRL SmartBox at Free against WebDuo Pro's $1.99. WebDuo Pro's advantage is update cadence (every 5 weeks vs every 7 months) and iOS requirement (9.0 vs 15.1). 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
KRL SmartBox is free to download; WebDuo Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
WebDuo Pro ships an update every 5 weeks, KRL SmartBox every 7 months. The most recent releases landed on September 23, 2026 and May 13, 2026 respectively.
| Parameter | WebDuo Pro | KRL SmartBox |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.4 (77 ratings) — better | — |
| Positive reviews | 58.6% of reviews | — |
| Number of ratings | 77 — better | — |
| Update frequency | Every 5 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 18 MB | 33 MB |
| Age rating | 17+ | 4+ |
| Developer | Michael Sacks | Witte Metallwaren Handelsges. mbH & Co. KG |
In-app purchases
WebDuo Pro
No in-app purchases
KRL SmartBox
No in-app purchases
