Calcutron vs TouchGap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calcutron
This tool helps designers, developers, and artists proportionally resize digital assets. Easily calculate new dimensions for images, videos, or layouts by entering one measurement.
- Calculate missing dimension automatically
- Use common or custom aspect ratios
- Save frequently used sizes
- Swap width and height with one tap
- Round dimensions to specified decimal places
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Calcutron is a tool for designers, developers, graphic artists, photographers, or anyone who needs to proportionally resize digital assets or layouts based on their current size or aspect ratio. Calcutron makes it easy to quickly determine the new dimensions of any asset, such as video, photographs, or graphics. Simply enter one dimension and the other dimension is automatically calculated for you based on the original size or aspect ratio. In addition to graphic-professionals, Calcutron is a great tool for programmers who need to resize images or video in code. It can be a real time-saver over doing all the calculations manually. FEATURES • Enter the width or height to automatically calculate the other dimension. • Choose from a list of common aspect ratios or enter your own. • Save your most-used sizes as favorites. • Quickly swap width and height values with a single tap. • Round calculated dimensions up, down, or nearest - from 0-4 decimal places.
TouchGap
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Does your screen sometimes seem to miss a touch, but you cannot show exactly when or where it happens? TouchGap is a visual diagnostic tool that draws the touch events delivered to the app by your iPhone or iPad. It goes beyond drawing lines by showing time between events, samples per second, cancellations, and recurring locations so you can examine touch continuity. Five guided test modes • Trace Test: Follow a guide to review the input path across different screen areas. • Hold Test: Keep a finger down and watch whether contact remains continuous. • Multi Test: Move one, two, or three fingers together to check multitouch input. • Ghost Watch: Leave the screen untouched and record unexpected input delivered to the app. • Tap Test: Review recognition of single, double, and triple taps. See the path. Measure the timing. • A different colored trail and live contact point for each finger • Red dotted segments when the interval between received events exceeds your selected threshold • Samples per second, maximum event interval, suspected gap count, and cancellation count • A result summary marked Stable, Caution, or Retest • Diagnostic records with device model, OS version, and test time • Save a result image or share a PDF report Repeat the same test before and after removing a case or charger, or before and after a repair, to compare results under different conditions. No ads are shown on the active test screen, keeping the touch area clear. Important limitation TouchGap does not confirm or guarantee a hardware diagnosis. Every value and visual is based only on events that iOS delivers to TouchGap. Slow movement, system load, display refresh-rate changes, system gestures, and accessories can also affect event timing. Compare several repeated tests under the same conditions. If the issue continues, contact Apple or an authorized service provider for a hardware assessment.
Screenshots
Verdict
The clearest difference is price: TouchGap at Free against Calcutron's $0.99. Calcutron's advantage is ads (none vs shown) and iOS requirement (14.7 vs 16.0). On 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
TouchGap is free to download; Calcutron costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Calcutron | TouchGap |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 33 months | — |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.7 — better | 16.0 |
| Further details — not scored | ||
| Size | 0 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Solo Design, LLC | nowApp Inc. |
In-app purchases
Calcutron
No in-app purchases
TouchGap
No in-app purchases









