Comparison

SIMPL3D vs EyeSound Vocal

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

Head to head
About

SIMPL3D

Design and create 3D models with an intuitive interface, no prior skills needed. Publish your creations to a community site and get instant feedback with live rendering.

Highlights
  • 3D model creation
  • Intuitive design interface
  • Live rendering feedback
  • Community publishing
  • No creative skills required
Features
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SIMPL3D is an iOS iPad app that enables everyone to create and design 3D models. The app lets you create a model and publish it to a community site. No creative or technical 3D design skills are required to create your own printable 3D models. The live rendering on your iPad gives you instant design feedback. Please join and let us know what you think!

About

EyeSound Vocal

Features
Read full description

EyeSound Vocal converts spoken words and other sounds into data rich images. These are seen in an active spectrogram displayed on the screen of your device. Latency of sound-to-image is less than 100 milliseconds. The spectrogram can be tuned by the user so that images of most spoken words are recognizable and are unique. If one has memorized a good sized vocabulary of word images, there can be some visual comprehension of spoken conversations just from viewing the app's spectrogram. Details in the spectrograms indicate inflection and volume. Applications/uses: - entertainment - watch as sounds and conversations morph into image streams - art - create and download spectrogram images that correspond to spoken phrases or other sounds ------------------------------------------------ NOTE: EyeSound Vocal does not capture medical data and does not provide health related measurements, diagnoses or treatment advice. It is not intended for use as a tool for treatment of medical conditions. It is not intended for use as a tool for scientific measurements. ------------------------------------------------ User adjustable parameters in the app include the rate at which sonogram images progress across the screen, resolution, colors, color switching and color mapping to sound intensity, high frequency boost. Features include auto gain, display of saved images next to active or paused spectrogram, pause/resume for capture of images, save/recall of images, save/recall of setup parameters, default parameter setup that is well suited to the visualization of human speech. full screen mode for a view of nothing but the active, or paused, spectrogram. How the app works: Sound is captured by your device's microphone. The app processes the sound data in small sized packets. For each packet the app computes frequencies and intensities. A spectrogram is created by color mapping intensities across frequency bins and then plotting these versus time. With ongoing plotting of packet data as it arrives the spectrogram becomes 'active' - it appears as a movie. EyeSound - Past, Present, Future: 45 years ago, in 1979, a young chemical engineer fresh out of MIT had just begun working for GE in Niskayuna, NY. In his spare time he built and experimented with breadboarded circuits that incorporated resistors and capacitors, transistors and ICs and lights, microphones and speakers. One day he assembled a device consisting of a row of LEDs tied into a circuit that would sequentially light the LEDs in accordance with an input voltage signal. When he manually swept this device in an arc he saw - very much to his surprise and to his fascination - images of complex waveforms painted across empty air. This simple device was giving a glimpse of all of the information that was normally only heard! The engineer had found a mission: improve upon the device to open to the world a whole new dimension of visual perception. A team of 2 of us - the engineer and the coder - have over the past several months turned the concept into an app. The initial release is happening now. The 45 year old mission is on the verge of realization. We anticipate releasing new versions of the EyeSound Vocal app on a regular basis. Users - please send us your suggestions and we'll use them as direction for improvements and use them to expand on our user tips. We will be taking a look into interfacing EyeSound with two types of peripheral devices (1) AR glasses which could put the active spectrogram front and center in your field of view - so that while viewing the spectrogram you will be more in the same world with the people around you; (2) wearable, directional and better quality microphones to avoid the pick up of background sounds that at times obscure the visualizations.

Screenshots

SIMPL3D4 screens
EyeSound Vocal4 screens

Verdict

The call

The clearest difference is in-app purchases: EyeSound Vocal at none against SIMPL3D's 1. SIMPL3D's advantage is update cadence (every 10 days vs every 3 weeks) and iOS requirement (10 vs 17.0). 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. SIMPL3D sells 1 one-off in-app purchase. EyeSound Vocal asks for nothing beyond the download.

UpkeepUpdate frequency

SIMPL3D ships an update every 10 days, EyeSound Vocal every 3 weeks. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
SIMPL3D versus EyeSound Vocal: the parameters behind the verdict, then further details
ParameterSIMPL3DEyeSound Vocal
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10 — better17.0
Further details — not scored
Size106 MB3 MB
Age rating4+4+
DeveloperIndicia Groupkeith house

In-app purchases

1 purchases

SIMPL3D

One-time1
  • SIMPL3D coins$0.99
None

EyeSound Vocal

No in-app purchases

Questions

Is SIMPL3D free?
SIMPL3D is free to download, with in-app purchases available.
Is EyeSound Vocal free?
EyeSound Vocal is free to download, with no in-app purchases.
Do SIMPL3D or EyeSound Vocal have ads?
Neither SIMPL3D nor EyeSound Vocal shows ads.
Which is updated more often, SIMPL3D or EyeSound Vocal?
SIMPL3D ships an update every 10 days, and EyeSound Vocal every 3 weeks. Most recently, SIMPL3D was updated on October 20, 2026 and EyeSound Vocal on October 15, 2026.

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