Comparison

Dyop® Vision Test vs Co

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Dyop® Vision Test

This app allows you to test your vision quickly and accurately using your iPhone as a controller. It offers a more precise and efficient alternative to traditional eye tests, suitable for various users.

Highlights
  • iPhone controller functionality
  • Under 60-second vision test
  • Precise and consistent results
  • Minimizes fixation fatigue
  • No patient literacy required
  • 30-day free trial
Features
Read full description

The Dyop Home Eye Test > Use your iPhone as the Dyop Controller > Test your vision in under 60 seconds The Dyop for Doctors A Dyop® acuity test is: > More precise, consistent, and efficient > Avoids overminusing and memorization > Minimizes fixation and decision fatigue > Does not require patient literacy > Use your iPhone companion App as the Dyop Controller The Dyop Vision Test comes with a 30 day free trial. After this period you may purchase an auto-renewing subscription through an In-App Purchase. (If you do not maintain a subscription you can only use the App for thirty days and then it will expire) • Auto-renewable subscription • 1 month ($0.99) • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. www.chart2020.com/dyop-privacy www.chart2020.com/dyop-terms-of-use

About

Co

Features
Read full description

Master life-saving tactical casualty care skills when and where you need them most. Co-Responder provides comprehensive combat medic and emergency medical training for military and first responders worldwide, with full offline capability for field and austere environments.

Screenshots

Co4 screens

Verdict

The call

The clearest difference is in-app purchases: Co at none against Dyop® Vision Test's 1. Co also leads on update cadence (every 3 months vs every 7 months). Dyop® Vision Test's advantage is iOS requirement (10.0 vs 18.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Dyop® Vision Test sells 1 in-app purchase, starting at $0.99 per month. Co asks for nothing beyond the download.

UpkeepUpdate frequency

Dyop® Vision Test ships an update every 7 months, Co every 3 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Dyop® Vision Test versus Co: the parameters behind the verdict, then further details
ParameterDyop® Vision TestCo
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 7 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPadiPhone, iPad — better
Requires iOS10.0 — better18.0
Further details — not scored
Size16 MB30 MB
Age rating4+17+
DeveloperShemesh Health Solutions PTY LtdAllogy Interactive

In-app purchases

1 purchases

Dyop® Vision Test

Subscriptions1
  • Monthly subscriptipn1 Month trial$0.991 Month
None

Co

No in-app purchases

Questions

Is Dyop® Vision Test free?
Dyop® Vision Test is free to download, with in-app purchases available.
Is Co free?
Co is free to download, with no in-app purchases.
Do Dyop® Vision Test or Co have ads?
Neither Dyop® Vision Test nor Co shows ads.
Which is updated more often, Dyop® Vision Test or Co?
Dyop® Vision Test ships an update every 7 months, and Co every 3 months. Most recently, Dyop® Vision Test was updated on November 4, 2026 and Co on October 30, 2026.

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