ClassicTimer vs Twin Calc
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
ClassicTimer
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ClassicTimer brings the charm of a classic kitchen timer to your iPhone. INTUITIVE DIAL Turn the dial to set your time, release to start. Tap to pause, double-tap to reset. It's that simple. 4 SCALES Switch between 6, 12, 36, and 72-minute scales. Perfect for cooking, studying, workouts, and more. LIGHT & DARK MODE Switch with a single tap. Choose the look that suits your style or time of day. WIDGETS & LIVE ACTIVITIES Start a timer right from your Home Screen widget. See real-time countdown on your Lock Screen and Dynamic Island. BACKGROUND NOTIFICATIONS Get notified when your timer is done, even while using other apps. PRO (ONE-TIME PURCHASE) โข Remove all ads โข Color customization (body, dial, ticks, needle, background) โข Background image customization (choose from your photo library) Simple, beautiful, and uniquely yours. Terms of Use: https://10half.jp/classictimer/terms.en.html Privacy Policy: https://10half.jp/classictimer/privacy.en.html
Twin Calc
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Twin Calc puts two independent calculators on one screen โ a simple calculator app for anyone who has ever wished they had two. Compare two estimates. Split a bill two different ways. Convert on one side while you total on the other. Check last year's numbers against this year's. Open Twin Calc and calculators A and B are already there โ no onboarding, no sign-up. Features - Calculator A and B stacked vertically (or side by side in landscape), each fully independent - Works just like the built-in iPhone calculator: + โ ร รท, %, ยฑ, backspace, and thousands separators - An expression line shows what you are calculating, so you never lose track - Drag the divider to resize the two calculators; double-tap to reset to half and half - Long-press a result to copy it; swipe left to delete one character - Haptic feedback (can be turned off) - History (tape) keeps your results automatically โ tap to copy, or send a result back to A or B - Light and dark themes that follow your system setting - Both calculators and the split ratio are restored exactly as you left them Free - Two calculators, history, and reuse of your 3 most recent results - No ads PRO (one-time purchase) - Never retype a result again: send A's answer straight to B, or swap A and B in one tap - Bring back any past result from history - 3 extra themes: Midnight, Paper, and Mono PRO is a single one-time purchase. No subscription, no extra fees. Everything you calculate stays on your device and is never sent to a server. For iPhone (portrait and landscape).
Screenshots
Verdict
The clearest difference is ads: Twin Calc at none against ClassicTimer's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. ClassicTimer sells 1 one-off in-app purchase and Twin Calc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | ClassicTimer | Twin Calc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | โ |
| Ads | Yes | No โ better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad โ better | iPhone |
| Requires iOS | 17.0 | 16.4 โ better |
| Further details โ not scored | ||
| Size | 8 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | 10HALF LLC | Hiroki Sugiyama |
In-app purchases
ClassicTimer
- ClassicTimer Pro$1.99
Twin Calc
- PRO$3.99









