Comparison

Plazma vs AmblyoPlay

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

Head to head
About

Plazma

This visually stimulating app offers a simple, interactive experience designed for individuals with special or complex needs, including autism. It provides a range of effects that can be changed by tapping buttons or using assistive technology switches.

Highlights
  • Visually stimulating effects
  • Switch accessible control
  • Interactive button taps
  • Suitable for all ages
  • No ads or in-app purchases
Features
Read full description

Lava Lamp Plazma is a simple stimulation app for people with special/complex needs (including autism) of ALL ages. It is visually stimulating and suitable for a range of abilities. Plazma is switch accessible. Tap buttons to change effects. Plazma has no adverts, no settings screen and no in-app purchases. Switch box compatibility: Plazma can be controlled by assistive technology switches that produce character codes (1, 2, 3, 4 & ~1, ~2, ~3, ~4) - all produce different changes. To join our enews list, see videos and more Sensory Apps visit www.sensoryapphouse.com

About

AmblyoPlay

This app provides vision therapy through engaging games designed to stimulate the weaker eye and improve cooperation between both eyes. It's scientifically proven to be most effective for ages 4-14, offering a personalized program that adapts to the user's progress.

Highlights
  • Game-based vision therapy
  • Stimulates weaker eye
  • Improves eye cooperation
  • Personalized therapy programs
  • Progress tracking
  • Daily 30-minute sessions
Read full description

AmblyoPlay is a vision therapy for individuals with difficulties in the vision system, such as convergence insufficiency, lazy eye, strabismus and many others. Therapy is conducted through playing different games that stimulate the weaker eye, as well as encourage good cooperation of both eyes. These vision system difficulties are very frequent: Lazy eye occurs in up to 5% of all population, while other binocular vision dysfunctions occur in up to 15% of all population. These problems can be treated in several ways with recent comparative studies indicating that vision therapy yields the best results. Vision therapy exercises must be performed regularly and correctly to deliver best results and it has been scientifically proven that the therapies work best between the ages of 4 and 14. Vision therapy is performed on a computer or tablet for 30 minutes daily. Each training session is composed of fun and engaging games with challenging exercises for strengthening eye muscles and eye-brain coordination. Valid and active AmblyoPlay account is required for use of AmblyoPlay. KEY FEATURES: EVERY DAY FOR AT LEAST 30 MINUTES! To be successful, vision therapy needs to be performed daily. Due to time and physical constraints, this can not be done always at eye clinics, so a large majority of the success of the therapy depends on the exercises performed at home. Methods in use right now are often described as boring, repetitive and unstimulating, leading to difficulties motivating young clients and consequently leading to suboptimal results. It is not enough to just do the exercises, one has to be engaged and focused. DON’T DO – PLAY VISION THERAPY! It is essential that we engage users with something they already know and love to do. We don’t want kids to feel like they are doing exercises or training, but rather like they are just playing! AmblyoPlay utilises game mechanics to stimulate client. Games and exercises are rewarding them with virtual and physical rewards If they are performing daily therapies correctly. KNOW HOW THEY ARE DOING! Knowing whether therapies and exercises are yielding results is essential. Although one does have to go to eye care specialist for the full eye examination to be certain of the improvements, AmblyoPlay does offer a rudimentary and basic way of tracking the progress of visual function even when not at the doctors’ office. They are designed in a way that it is not possible to progress to higher levels if the visual function is not improving. To further check for the advances in visual function, automated visual acuity screenings are performed every two weeks. PERSONALIZED PROGRAMME THAT GROWS WITH THE USER! When you enter AmblyoPlay for the first time, you are greeted with questions and quick tests that help us determine what mode of vision therapy is best for the user based on their status and their visual function. Based on this information your child will have personalised vision therapy experience with games and exercises working the user progresses through daily therapies, AmblyoPlay is progressing with them. When their visual function improves, the difficulty increases so that the games and exercises keep being engaging and challenging. Through this evolving vision therapy programme, visual functions are always pushed to their current limits, forcing them to improve even further. TOGETHER WITH THE SPECIALIST! AmblyoPlay as home-based therapy can nicely complement the exercises and therapies at clinics. Users are able to add a doctor to their profile and doctor will be able to see in his portal just general information on whether kids are performing the exercises and whether any improvement is noted. Consensus by both parent and doctor will be required to open this option as to prevent any information being seen to unauthorised individuals.

Screenshots

Plazma4 screens

Verdict

The call

The clearest difference is review sentiment: AmblyoPlay at 88% against Plazma's 25%. AmblyoPlay also leads on update cadence (every 5 weeks vs every 5 months) and ratings volume (21 vs 4). Plazma's advantage is rating (5.0 vs 4.0) and device support (3 vs 1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Plazma holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: AmblyoPlay has 21 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 25% of Plazma's written reviews are positive against 88% of AmblyoPlay's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Plazma ships an update every 5 months, AmblyoPlay every 5 weeks. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Plazma versus AmblyoPlay: the parameters behind the verdict, then further details
ParameterPlazmaAmblyoPlay
PriceFreeFree
Rating5.0 (4 ratings) — better4.0 (21 ratings)
Positive reviews25.0% of reviews88.2% of reviews — better
Number of ratings421 — better
Update frequencyEvery 5 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS11.4 — better13.0
Further details — not scored
Size46 MB426 MB
Age rating4+4+
DeveloperSensory App House LtdHundred Vision d.o.o.

Customer experience

Plazma

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

AmblyoPlay

All ratings21 ratings
Positive76.2%
Neutral4.8%
Negative19.0%
Written reviews17 reviews
Positive88.2%
Neutral0.0%
Negative11.8%

In-app purchases

None

Plazma

No in-app purchases

None

AmblyoPlay

No in-app purchases

Questions

Is Plazma free?
Plazma is free to download, with no in-app purchases.
Is AmblyoPlay free?
AmblyoPlay is free to download, with no in-app purchases.
Which has better reviews, Plazma or AmblyoPlay?
Plazma is rated higher. Plazma averages 5.0 out of 5 from 4 ratings, while AmblyoPlay averages 4.0 from 21 ratings.
Do Plazma or AmblyoPlay have ads?
Neither Plazma nor AmblyoPlay shows ads.
Which is updated more often, Plazma or AmblyoPlay?
Plazma ships an update every 5 months, and AmblyoPlay every 5 weeks. Most recently, Plazma was updated on October 14, 2026 and AmblyoPlay on October 24, 2026.

Other comparisons