Knud vs A3 Atlas Scanner
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Knud
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Your screenshots, finally organised. Share any screenshot to Knud โ he reads it, understands the content, and files it in the right folder. Recipes go in Recipes. Work notes go in Work Notes. No manual sorting, no tags, no hassle. How it works: - Share any image to Knud from any app - AI reads the content and writes a title and description - Knud picks the right folder โ or creates a new one - Everything stays on your device Private by default. No cloud uploads. No tracking. No account required. 15 free screenshots included. Upgrade to Knud Pro for unlimited use. Search by text โ find any screenshot by the actual text inside it. Send anywhere โ forward to Notion, Apple Notes, or any app via the share sheet. Light & dark mode โ follows your system. Add notes โ annotate and move screenshots between folders anytime.
A3 Atlas Scanner
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Atlas Scanner turns a site visit into a complete building record โ on location, with no Internet needed. Scan room by room or floor by floor using your device's LiDAR sensor. The app produces dimensioned 2D floor plans, computes areas, and keeps everything in a per-property record you can reopen months later. **Built for field work** Large buttons, guided steps, no clutter. Every scanned zone is reviewed on screen before you accept it: you see the plan, the dimensions and a quality score before moving on. **Photos that stay tied to the place** Photograph the electrical panel, the main water valve, the water heater, the router, the thermostats. Each photo stays attached to its room and to its point of interest โ no more camera roll where you can't tell which building you're looking at. **Sensor suggestions** From the surveyed geometry, the app proposes where to place sensors and explains why. Accept, move or decline โ the decision stays yours. **Multiple floors, honestly linked** Connect two levels through a stairwell and orient both plans in a shared frame. The app states plainly what was measured and what you confirmed by hand โ it never claims precision it doesn't have. **Export and sharing** A complete ZIP (data, dimensioned PDF plans, photos, installer report) plus a lightweight web page your client opens in a browser without installing anything. You choose what leaves the device: photos, address, location, notes โ each with its own switch. Location off means location gone, including inside the photo metadata. **Works offline** Surveying, review, plans and ZIP export all work with no network. Online sharing is optional. 3D scanning requires a LiDAR-equipped device (iPhone 12 Pro or later, iPad Pro 2020 or later). On other devices you can still create properties, take photos, import a project and export โ but not produce a 3D scan.
Screenshots
Verdict
The clearest difference is in-app purchases: A3 Atlas Scanner at none against Knud's 2. A3 Atlas Scanner also leads on ads (none vs shown) and iOS requirement (17.0 vs 26.2). On price, update cadence and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Knud sells 2 in-app purchases, starting at $2.99 per month. A3 Atlas Scanner asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.
| Parameter | Knud | A3 Atlas Scanner |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | Every 3 days |
| Ads | Yes | No โ better |
| In-app purchases | Yes | No โ better |
| Devices | iPhone | iPhone, iPad โ better |
| Requires iOS | 26.2 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 11 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Martin Ibsen | Alexandre Bouchard |
In-app purchases
Knud
- Knud Pro$2.991 Month
- Pro Lifetime โ Launch-tilbud$29.99
A3 Atlas Scanner
No in-app purchases









