Comparison

SignalClock vs On the hour

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

Head to head

Punctuality perfected.

Free

🔧 Utilities

★ 4.02 ratingsView app →

About

SignalClock

Features

Read full description

Digital clock has time signal function based on Local Notification Center. 5 different signal sound sets (Digital Clock, Cuckoo, Voice, Whittington Chime,Church Bell). All fonts iOS 10 supports are available in clock. 5 tone type are available in all sound file sets.

About

On the hour

This utility app provides a single, focused function: a chime that sounds precisely on the hour. It's designed for users who need a simple, reliable auditory reminder of passing time.

Highlights

Hourly chime notification
Simple, single-function design
Reliable timekeeping alert

Features

Read full description

Just one feature: Chime on the hour

Screenshots

SignalClock1 screens

On the hour3 screens

Verdict

The call

The clearest difference is price: On the hour at Free against SignalClock's $0.99. On the hour also leads on update cadence (weekly vs every 5 months). SignalClock's advantage is iOS requirement (12.0 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

CostPrice · In-app purchases · Ads · Monetization

On the hour is free to download; SignalClock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SignalClock ships an update every 5 months, On the hour weekly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 6 level

SignalClock versus On the hour: the parameters behind the verdict, then further details
Parameter	SignalClock	On the hour
Price	$0.99	Free — better
Rating	—	4.0 (2 ratings) — better
Number of ratings	—	2 — better
Update frequency	Every 5 months	Weekly — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	12.0 — better	15.1
Further details — not scored
Size	103 MB	28 MB
Age rating	4+	4+
Developer	Masafumi Endoh	田丰何

In-app purchases

None

SignalClock

No in-app purchases

None

On the hour

No in-app purchases

Questions

Is SignalClock free?

SignalClock costs $0.99, with no in-app purchases.

Is On the hour free?

On the hour is free to download, with no in-app purchases.

Do SignalClock or On the hour have ads?

Neither SignalClock nor On the hour shows ads.

Which is updated more often, SignalClock or On the hour?

SignalClock ships an update every 5 months, and On the hour weekly. Most recently, SignalClock was updated on November 1, 2026 and On the hour on October 30, 2026.