Eye Training Tool vs CritiCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Eye Training Tool
This app offers scientific eye relaxation and visual perception exercises based on neuroplasticity and optometry principles. It features Gabor pattern training, dynamic visual tracking, and accommodation exercises to improve visual acuity, eye muscle flexibility, and reduce eye strain.
- Gabor visual perception training
- Dynamic visual tracking exercises
- Accommodation and convergence assistance
- Eye muscle relaxation techniques
- Binocular coordination training
- Scientific eye relaxation programs
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Eye Training Tool is a comprehensive eye muscle relaxation and binocular coordination exercise aid designed based on ergonomics and modern visual health science principles. Prolonged staring at computer or phone screens can easily lead to dryness, soreness, sluggish focusing, and deep fatigue. This tool is designed for office workers, researchers, students, gamers, and anyone—adults or adolescents—who cares about daily eye wellness. With over 90 meticulously designed, self-rendered interactive graphics, combined with gentle near-far zooming, high-contrast visual grids, 3D spatial depth stretching, and fine contrast capture, it helps relax eye muscles, activate accommodation, improve binocular coordination, and enhance visual comfort and stereoscopic spatial perception during daily screen breaks. [New Feature: Holographic Interactive Preview] This version marks a milestone upgrade with the all-new Holographic Interactive Preview. You can intuitively browse and preview all 90+ eye relaxation and exercise items in real time on a single screen. With touch-adaptive support, simply focus your gaze or tap the screen to instantly preview smooth thumbnail motion effects, helping you quickly select the most suitable eye muscle stretching and relaxation routine in just one second, greatly enhancing daily operational fluidity and convenience. [Nine Professional Visual Relaxation & Eye Muscle Exercise Modules] - Vision Soothing & Wellness: Features classic Gabor patches, resonant red-light pulse flicker, 2D maze exploration, and stereoscopic distance gazing charts. Through high-contrast gratings and classic geometric structures, it activates foveal perception and helps awaken sluggish retinal cells. - Extraocular Muscle Movement Coordination: Provides frequent stretching exercises such as star tracing, horizontal reciprocation, vertical saccades, and figure-eight eye tracking. It guides the eyes to follow a highlighted target in large, regular sweeping movements to relax tense extraocular muscles. - Dryness Relief & Blink Training: Features a three-phase blink cycle guide: gentle blinks, firm closure (meibomian gland pumping), and distance gazing. Through rhythmic eye closing and opening, it assists the orbicularis muscle contraction to promote lipid secretion from the meibomian glands, helping relieve eye dryness from prolonged screen staring. - Lens Accommodation & Stereoscopic Fusion: Highly realistic simulations of the classic “Brock String” and “Accommodative Flipper.” Through step-like near-far focus jumps and translational push-pull in a 3D space, it trains the ciliary muscle’s accommodative power and focusing agility. - Binocular Coordination & Fusion Balance: Using red-green or red-blue anaglyph glasses, merge concentric dual-color circles in your mind to stimulate the brain’s stereoscopic perception, fusion, and depth focusing ability, while alleviating unilateral eye suppression. - Spatial 3D Tunnel Stretching: Simulates deep particle tunnels, rotating polygons, and other 3D depth zoom effects, guiding your sight to travel through virtual depths. This provides the eyes with a full alternating sense of “far-near” relaxation, helping relieve pseudo-myopia fatigue. - Moiré Interference Patterns: Offers soothing concentric bead-chain patterns and diagonal harmonic grid flows, allowing the eyes to rest in relaxing geometric motion. - Vestibulo-Ocular Reflex (VOR) Training: The target performs micro sinusoidal oscillations, inducing the eyes to execute high-frequency micro-tremors via passive reflex. This balances extraocular muscle tension and improves fixation reflexes. [Sensory & Ergonomic Experience] - Global Adaptive Light & Dark Mode: The main interface and all graphic backgrounds seamlessly follow the system to switch automatically—appearing warm, soft white during the day and deep, dark black at night. This reduces harsh glare and protects visual comfort in low-light environments. - Simulated Eye Linkage: Built-in linked
CritiCalc
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Simple tool for calculating a variety of transport medicine problems. This is not a tool for self-diagnosis and is meant to aid medical professionals that have been trained in these tools. Please seek medical help from a doctor as these tools in isolation are insufficient to provide medical advice. If you are a medical provider, please cross reference local policies, protocols, and training. No guarantee is provided to the accuracy of these tools.
Screenshots
Verdict
The clearest difference is price: CritiCalc at Free against Eye Training Tool's $9.99. CritiCalc also leads on update cadence (every 2 weeks vs every 4 months). Eye Training Tool's advantage is iOS requirement (13.0 vs 15.6). On 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
CritiCalc is free to download; Eye Training Tool costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Eye Training Tool ships an update every 4 months, CritiCalc every 2 weeks. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.
| Parameter | Eye Training Tool | CritiCalc |
|---|---|---|
| Price | $9.99 | Free — better |
| Positive reviews | 66.7% of reviews | — |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 55 MB | 53 MB |
| Age rating | 12+ | 17+ |
| Developer | Shanghai Liaoxiang Technology Co., Ltd. | Jason Richmond |
In-app purchases
Eye Training Tool
No in-app purchases
CritiCalc
No in-app purchases









