Unexpected Growth vs Stimmy Force
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unexpected Growth
Experience an augmented reality art installation on a museum terrace. Explore a coral reef made of plastic waste that reacts to your presence and environmental changes. Witness the impact of human interaction on digital art.
- Augmented reality art experience
- Geolocative installation
- Site-specific artwork
- Interactive coral reef
- Environmental commentary
- Dynamic visual changes
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"Unexpected Growth," by Tamiko Thiel (with /p), is a geolocative, site specific augmented reality art installation commissioned by the Whitney Museum of American Art in New York. It premiered in the exhibition "Programmed: Rules, Codes, and Choreographies in Art, 1965–2018," from September 28, 2018 - April 14, 2019. To experience it, download the „Unexpected Growth“ app to your own smartphone, go onto the Whitney Museum 6th floor terrace and look around the terrace in the display of this app. You will find yourself surrounded by a coral reef, as if the sea water levels have risen to inundate the entire Whitney Museum under water. Occasional waves seem to sweep the corals back and forth - they have become mobile, to better respond to changing climate conditions. In nature, many corals are self-similar structures following simple, repetitive rules of growth, which can often be described as mathematical „Lindenmayer systems.“ Here, you can see that the corals are forming these Lindenmayer systems out of plastic waste. Is this our future, as plastic waste becomes more numerous than the fish in the sea? Construction and use of smartphones is also a factor contributing to global climate change. As more and more visitors view the corals at the Whitney, their colors slowly bleach to white. Only after many hours of rest from the mediated human gaze will the corals regain their vibrant colors.
Stimmy Force
This app offers a calming sensory experience with smooth, friction-free animations. Users can customize various aspects of the visual elements to reduce stress, improve focus, and promote a sense of control. It's designed to be an engaging and therapeutic tool for relaxation.
- Friction-free animation
- Adjustable force, size, and color
- Interactive drag and release mechanics
- Offline functionality
- Ad-free experience
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Stimmy Force is a new sensory fidget designed to help reduce stress, regain focus, and restore calmness. Everyone experiences stimming on some level, and its benefits can be extremely positive - especially for individuals on the spectrum. Stimming is known to reduce anxiety, ease transition(s), lessen sensory overload, and help restore a sense of control. Features - Super smooth, friction-free animation! - Change the amount of force pull (attraction), push (strength), size, total, and select from carefully selected color palettes - Press and drag to move the balls all over the screen. They always come back! - Ad free! - No internet required! We hope you enjoy your experience and stim out with Stimmy Force!
Screenshots
Verdict
The clearest difference is price: Unexpected Growth at Free against Stimmy Force's $0.99. Unexpected Growth also leads on ratings volume (8 vs 2) and iOS requirement (12.0 vs 15). Stimmy Force's advantage is rating (5.0 vs 4.4) and update cadence (daily vs every 6 weeks). 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
Unexpected Growth is free to download; Stimmy Force costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stimmy Force holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 8 and 2 respectively.
Unexpected Growth ships an update every 6 weeks, Stimmy Force daily. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | Unexpected Growth | Stimmy Force |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.4 (8 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 6 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15 |
| Further details — not scored | ||
| Size | 64 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tamiko Thiel | KOA Interactive LLC |
Customer experience
Unexpected Growth
Stimmy Force
In-app purchases
Unexpected Growth
No in-app purchases
Stimmy Force
No in-app purchases
Questions
Is Unexpected Growth free?
Is Stimmy Force free?
Which has better reviews, Unexpected Growth or Stimmy Force?
Do Unexpected Growth or Stimmy Force have ads?
Which is updated more often, Unexpected Growth or Stimmy Force?
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