Comparison

Contour Detection vs Snore Recorder Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

Contour Detection

Features

Read full description

Detects the contours of the edges of an image.

About

Snore Recorder Pro

Features

Read full description

Record sleep audio and review louder sections that may include snoring. Modes: Quick Memo, Interview, Lecture. Library: search, filter, sort, favorites, rename, share, delete. Player: waveform, actual time, elapsed time, pinch zoom, bookmarks, and total duration above the chosen sound threshold. App language can be changed inside the app.

Screenshots

Contour Detection2 screens

Snore Recorder Pro4 screens

Verdict

The call

The clearest difference is ads: Snore Recorder Pro at none against Contour Detection's shown. Snore Recorder Pro also leads on iOS requirement (13.0 vs 17.7.2). Contour Detection's advantage is update cadence (fortnightly vs every 4 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Contour Detection ships an update fortnightly, Snore Recorder Pro every 4 months. Both last shipped on October 25, 2026.

Scorecard3 real differences · 3 level

Contour Detection versus Snore Recorder Pro: the parameters behind the verdict, then further details
Parameter	Contour Detection	Snore Recorder Pro
Price	Free	Free
Update frequency	Fortnightly — better	Every 4 months
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone	iPhone, iPod — better
Requires iOS	17.7.2	13.0 — better
Further details — not scored
Size	36 MB	22 MB
Age rating	4+	4+
Developer	Hideaki Uchikoshi	Shin YuJin

In-app purchases

None

Contour Detection

No in-app purchases

None

Snore Recorder Pro

No in-app purchases

Questions

Is Contour Detection free?

Contour Detection is free to download, with no in-app purchases.

Is Snore Recorder Pro free?

Snore Recorder Pro is free to download, with no in-app purchases.

Do Contour Detection or Snore Recorder Pro have ads?

Contour Detection shows ads; Snore Recorder Pro does not.

Which is updated more often, Contour Detection or Snore Recorder Pro?

Contour Detection ships an update fortnightly, and Snore Recorder Pro every 4 months. Most recently, Contour Detection was updated on October 25, 2026 and Snore Recorder Pro on October 25, 2026.