Holyiot vs Contour Detection
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Holyiot
Read full descriptionHide full description
An app that can connect sensor devices through Bluetooth and display and record sensor data in real-time
Contour Detection
Read full descriptionHide full description
Detects the contours of the edges of an image.
Screenshots
Verdict
The clearest difference is ads: Holyiot at none against Contour Detection's shown. Holyiot also leads on iOS requirement (10.0 vs 17.7.2). Contour Detection's advantage is update cadence (fortnightly vs every 3 months). On price, 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.
Holyiot ships an update every 3 months, Contour Detection fortnightly. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.
| Parameter | Holyiot | Contour Detection |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 10.0 — better | 17.7.2 |
| Further details — not scored | ||
| Size | 28 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Hong yi yun jia technology Co.,LTD | Hideaki Uchikoshi |
In-app purchases
Holyiot
No in-app purchases
Contour Detection
No in-app purchases
