tdc. vs Learn the Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
tdc.
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explore verified student discounts, travel assistant, internships, career opportunities, and study abroad resources — all available FREE inside the app. We don’t sell products and there are no payment or purchase features. Our mission is simple: help students save money, discover opportunities, and build their future.
Learn the Clock
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Drag the hands with your finger and learn to read a clock. The app asks for a time, such as "Set the clock to 7:30." You grab the hour hand and the minute hand and move them. The time is set the moment you lift your finger. Getting it wrong does not end anything. The first miss tells you which hand is off. The second miss moves the hands to the right place and shows you. NINE KINDS OF QUESTION Read o'clock / half past / 5 min steps / 1 min steps Calculate minutes later / minutes earlier / time passed Notation AM and PM / 24-hour They are arranged from easiest to hardest, but you can start anywhere. Nothing is locked behind finishing something else. ANALOG AND DIGITAL AT THE SAME TIME Choose Clock, Digits, or Both. The digital display is a split-flap board, the kind where the top half falls to reveal the next number. Pick Both and the digits move as you move the hands, so "short hand between 7 and 8, long hand on 9" and "7:45" become the same thing. WHAT YOU CAN DO - Drag the hands. The time is set when you lift your finger - One-minute precision - The hour rolls over when the minute hand passes 12, like a real clock - A missed hand lights up in orange - Switch between English and Japanese - Turn the music and sound effects on or off - Your display and language choices are remembered for next time FREE, WITH NO IN-APP PURCHASES Every question is free. There are no in-app purchases and no subscriptions, and nothing is locked behind a paywall. ABOUT THE ADS A banner sits at the very bottom of the screen. It is kept clear of the clock face and the Done button, and it never interrupts a question. Ad content is limited to the general audience (G) rating.
Screenshots
Verdict
The clearest difference is ads: tdc. at none against Learn the Clock's shown. tdc. also leads on update cadence (every 2 weeks vs monthly). On price, in-app purchases, device support and iOS requirement 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.
tdc. ships an update every 2 weeks, Learn the Clock monthly. The most recent releases landed on October 1, 2026 and October 18, 2026 respectively.
| Parameter | tdc. | Learn the Clock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Monthly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 94 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Abdul Majid Shah Bukhari | Yoshihide Maehama |
In-app purchases
tdc.
No in-app purchases
Learn the Clock
No in-app purchases
Questions
Is tdc. free?
Is Learn the Clock free?
Do tdc. or Learn the Clock have ads?
Which is updated more often, tdc. or Learn the Clock?
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