Convertui vs IllusionTEST
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Convertui
Easily convert between print sizes, screen sizes, and resolutions. Calculate pixels per inch (dpi), print size from pixels, or pixel count based on print size and resolution. Supports multiple units for print and screen definitions.
- Pixel to inch conversion
- Inch to pixel conversion
- DPI calculation
- Supports multiple units (mm, cm, inch, etc.)
- Light and dark interface
- Multiple language options
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Switch from your print sizes to your screen sizes to your resolutions quickly and easily. Convertui does that, only that, and does it very well. Calculate: - The number of pixels per inch (dpi) from a print size and the definition of your file. - A print size of a file in pixels with the resolution of your choice. - The number of pixels in a file of a certain print size for the resolution of your choice. Choose your units: - For print size: Mm, Cm, M, Inch, Foot or Yard. - For the definition, work in pixels or scale points: Pixel, Pixel@2x, Pixel@3x. Features: - Light and dark interface - Choice of language available - Intuitive and clean interface
IllusionTEST
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Compete for scores in a very difficult TEST using optical illusions! ( Point deduction method) Stop the gradually changing color and length in the right place. That's all.
Screenshots
Verdict
The clearest difference is update cadence: Convertui at every 5 days against IllusionTEST's every 14 months. Convertui also leads on chart position (#112 vs unranked) and iOS requirement (14.0 vs 17.6). On price, ads, 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
Convertui costs $0.99 and IllusionTEST $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.
Convertui ships an update every 5 days, IllusionTEST every 14 months. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.
| Parameter | Convertui | IllusionTEST |
|---|---|---|
| Price | $0.99 | $0.49 — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 days — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #112 — better | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Wido | SHUNJI KUSAKA |
In-app purchases
Convertui
No in-app purchases
IllusionTEST
No in-app purchases
