ADClock Blackboard vs Lightweight Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ADClock Blackboard
This utility app displays analog and digital clocks with a unique "Blackboard" design theme. It offers customizable display formats, date indications, and orientation mirroring. Users can also control time signal voice sounds and auto-lock settings.
- Analog and digital clock display
- Blackboard design theme
- 12/24-hour format switch
- Date indication (EN, JP, KR)
- Auto lock ON/OFF
- Horizontal/vertical inversion
- Time signal voice sound
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Analog and digital clock. This design theme is "Blackboard". You can set the various functions in the 2 settings button. General setting -> Setting button. Specific settings for each design -> (Q)uick Setup button. You can see the detail operating movie. Please press information (i) menu, and you will find app website. FEATURES ・12/24-hour display format switch. ・Date indication switch (English, Japanese, Korean). ・Auto lock ON/OFF. ・you can invert the design horizontal or vertical (reflect to mirrors and glass, etc.) ※ Shake -> invert switching. ・Time signal voice sound ON／OFF (English, Japanese). ※ You can switch 30 or 60 minutes intervals. NOTE: ・When this app does not start up, please try double-push the home button, and quit other running apps. ・There is no alarm function. ・Use iPhone or iPod Touch charging up for long term usage. ・Time accuracy is according to the internal clock. There is no time synchronization function. ・The design may be subject to change without notice due to circumstances in the version up.
Lightweight Clock
This utility app provides a straightforward and customizable clock display. It features an option for 24-hour format and shows seconds for precise timekeeping. It's designed for simplicity and ease of use.
- Customizable clock display
- Seconds displayed
- 24-hour format option
- Simple interface
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A simple, customizable clock with seconds. Can be used in 24-hour format.
Screenshots
Verdict
The clearest difference is iOS requirement: ADClock Blackboard at 6.0 against Lightweight Clock's 15.1. On price, rating, ratings volume and ads 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.
On the App Store both sit at effectively the same score — 5.0 for ADClock Blackboard against 5.0 for Lightweight Clock. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | ADClock Blackboard | Lightweight Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 10 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 6.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 28 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroyuki Otsuka | Floyd Ross |
Customer experience
ADClock Blackboard
Lightweight Clock
In-app purchases
ADClock Blackboard
No in-app purchases
Lightweight Clock
No in-app purchases
Questions
Is ADClock Blackboard free?
Is Lightweight Clock free?
Which has better reviews, ADClock Blackboard or Lightweight Clock?
Do ADClock Blackboard or Lightweight Clock have ads?
Other comparisons
