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
A device for recording ambient temperature and humidity. The data recorded by the device can be transferred to mobile phone with Bluetooth for easy viewing and exporting.
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 device support (3 vs 1) and iOS requirement (13.0 vs 17.7.2). Contour Detection's advantage is update cadence (fortnightly vs every 2 months). On price and in-app purchases 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 2 months, Contour Detection fortnightly. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.
| Parameter | Holyiot | Contour Detection |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.7.2 |
| Further details — not scored | ||
| Size | 34 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
Questions
Is Holyiot free?
Is Contour Detection free?
Do Holyiot or Contour Detection have ads?
Which is updated more often, Holyiot or Contour Detection?
Other comparisons
