Comparison

BOB Shrine vs EchoVision

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

Head to head
About

BOB Shrine

Create offerings for an AI creature named BOB, inspired by an art installation. Name your shrine, select offerings, and add lessons. The app automates the production of your offerings as stimuli for BOB to experience.

Highlights
  • Create offerings for AI creature BOB
  • Name and customize your shrine
  • Choose from a variety of offerings
  • Caption offerings with parental lessons
  • Automated stimulus production for BOB
  • Experience an interactive art installation
Features
Read full description

BOB Shrine allows you to make offerings to BOB (Bag of Beliefs), an AI-based creature by Ian Cheng. Name your shrine and choose from a growing variety of offerings. Caption your offering with a parental lesson. BOB Shrine will automate the production of your offering into an ongoing pattern of stimuli for BOB to receive. If your BOB Shrine makes enough offerings, maybe one day BOB will visit… BOB Shrine coincides with the United States premiere of BOB at Gladstone Gallery, New York. The first in a new series of artificial lifeforms, BOB takes the form of a chimeric branching serpent. For more information, please visit BOBS.AI

About

EchoVision

Experience the world through the eyes of a bat with this mixed reality art installation. Using a bat-shaped mask and your smartphone's LiDAR, visualize echoes and understand echolocation. It offers a unique perspective on non-human sensory perception and promotes ecological appreciation.

Highlights
  • Simulates bat echolocation
  • Mixed reality art experience
  • Handheld bat-shaped masks
  • Smartphone LiDAR integration
  • Visualizes propagating echoes
  • Promotes ecocentric design perspective
Features
Read full description

EchoVision is an interactive mixed reality art experience that simulates bat echolocation using custom-designed, handheld, bat-shaped masks based on the open-source HoloKit headset. As users initiate sounds, they experience echolocation—the remarkable navigation method bats employ in darkness—through visual representations of propagating echoes mapped onto the real-world 3D shape of the surrounding environment, scanned in real-time by the LiDAR sensor of a smartphone mounted on the masks. By providing a unique glimpse into how non-human creatures perceive their sensory world, EchoVision promotes an ecocentric design perspective, fostering interspecies understanding and appreciation.

Screenshots

BOB Shrine1 screens
EchoVision1 screens

Verdict

The call

The clearest difference is update cadence: BOB Shrine at every 11 days against EchoVision's every 2 months. BOB Shrine also leads on review sentiment (100% vs 83%) and ratings volume (14 vs 2). On price, rating, ads and in-app purchases 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

On the App Store both sit at effectively the same score — 4.9 for BOB Shrine against 5.0 for EchoVision. That said, the two scores are not equally well evidenced: BOB Shrine has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of BOB Shrine's written reviews are positive against 83% of EchoVision's.

UpkeepUpdate frequency

BOB Shrine ships an update every 11 days, EchoVision every 2 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
BOB Shrine versus EchoVision: the parameters behind the verdict, then further details
ParameterBOB ShrineEchoVision
PriceFreeFree
Rating4.9 (14 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews — better83.3% of reviews
Number of ratings14 — better2
Update frequencyEvery 11 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, Vision Pro
Requires iOS11.0 — better26.0
Further details — not scored
Size87 MB90 MB
Age rating4+4+
DeveloperIan ChengHolo Interactive

Customer experience

BOB Shrine

All ratings14 ratings
Positive92.9%
Neutral7.1%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

EchoVision

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

In-app purchases

None

BOB Shrine

No in-app purchases

None

EchoVision

No in-app purchases

Questions

Is BOB Shrine free?
BOB Shrine is free to download, with no in-app purchases.
Is EchoVision free?
EchoVision is free to download, with no in-app purchases.
Which has better reviews, BOB Shrine or EchoVision?
EchoVision is rated higher. BOB Shrine averages 4.9 out of 5 from 14 ratings, while EchoVision averages 5.0 from 2 ratings.
Do BOB Shrine or EchoVision have ads?
Neither BOB Shrine nor EchoVision shows ads.
Which is updated more often, BOB Shrine or EchoVision?
BOB Shrine ships an update every 11 days, and EchoVision every 2 months. Most recently, BOB Shrine was updated on October 29, 2026 and EchoVision on October 24, 2026.

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