Touchless Countdown vs ReadableCalc
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Touchless Countdown
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Countdown without touching *This app uses the proximity sensor located next to the front camera. The proximity sensor detects when your hand is close to the front camera, allowing you to operate the app without touching it. 1. Tap the button for the time (seconds) you want to count down. 2. Hold your hand near the front camera to start the countdown.
ReadableCalc
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ReadableCalc is a calculator app that displays large numbersβlike 3 trillion 500 billionβin readable units. Itβs designed to make extremely large numbers more intuitive at a glance. Main Features β’ Supports four basic operations (+, β, Γ, Γ·) β’ Displays results in English numeric units for easy readability β’ Handles decimals and negative numbers β’ DEL button for deleting one character at a time (Long press to clear the entire expression) β’ Long press on expressions or results to copy β’ Tap on the βreadableβ result to toggle display between: β’ Short scale / Long scale / Kanji numerals Additional features in landscape mode: β’ β00β, β000β, and β0000β buttons for quickly adding zeros β’ βxΒ²β and βxΒ³β buttons for quick exponentiation Note: β’ Numbers exceeding 200 digits may be rounded due to calculation and display limitations. Please be cautious if you need high precision. β’ Short scale and Long scale support numbers up to 10^198. β’ Kanji numeral display supports up to 10^72. Larger numbers are shown in Arabic numerals instead.
Screenshots
Verdict
The clearest difference is ads: ReadableCalc at none against Touchless Countdown's shown. ReadableCalc also leads on iOS requirement (12.0 vs 15.8.3). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Touchless Countdown ships an update fortnightly, ReadableCalc weekly. The most recent releases landed on September 29, 2026 and September 20, 2026 respectively.
| Parameter | Touchless Countdown | ReadableCalc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Weekly β better |
| Ads | Yes | No β better |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod β better |
| Requires iOS | 15.8.3 | 12.0 β better |
| Further details β not scored | ||
| Size | 36 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | YONAGARE LAB |
In-app purchases
Touchless Countdown
No in-app purchases
ReadableCalc
No in-app purchases
Questions
Is Touchless Countdown free?
Is ReadableCalc free?
Do Touchless Countdown or ReadableCalc have ads?
Which is updated more often, Touchless Countdown or ReadableCalc?
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