KeepSmilin' vs ZaiSpace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeepSmilin'
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When you smile, even briefly, your brain releases a powerful cocktail of feel-good chemicals. The "Many Smiles Collaboration," a comprehensive 2022 study published in Nature Human Behaviour, confirmed that adopting a smile—even a forced one—genuinely makes you feel happier. Those 5-second smiles trigger the release of: Dopamine: Your brain's reward chemical Serotonin: Your natural mood stabilizer Endorphins: Your body's pain-relieving compounds Together, these create an instant mood boost that can be measured in brain activity. Research has consistently linked smiling to lower heart rates and reduced blood pressure, especially during stressful situations.
ZaiSpace
Create a digital avatar to represent your ideal self and embark on shared adventures with others. These experiences generate unique stories that seamlessly transition into conversations, fostering deeper connections.
- Create and customize a digital avatar
- Engage in shared virtual hangouts
- Generate stories from hangouts
- Seamless chat integration after hangouts
- Build a collection of shared memories
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> ZaiSpace is a social app built around shared experiences. > Create Your Zai Your Zai is your ideal self. A digital being you hatch, name, and shape into whoever you wish you could be. It lives in ZaiSpace, representing you in ways a profile photo never could. > Go on Hangouts Your Zai meets other Zais and they go on adventures together. Each hangout becomes a story. Sometimes funny, sometimes surprisingly heartfelt. You just pick a topic and see what unfolds. > From Stories to Real Conversations After each hangout, the story drops right into a chat between you and the other person. No need for an icebreaker. You already have the best one. > Memories That Grow With You Every hangout leaves a trace. Over time, your Zai builds a collection of shared moments and a quiet reminder of the people you've met along the way. > We're a small team at Stanford who believe friendships start with having shared experiences, not scrolling past each other. Come hang out with us. > Questions? zaisland2024@gmail.com
Screenshots
Verdict
The clearest difference is update cadence: ZaiSpace at weekly against KeepSmilin''s fortnightly. ZaiSpace also leads on iOS requirement (16.3 vs 26.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
KeepSmilin' ships an update fortnightly, ZaiSpace weekly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | KeepSmilin' | ZaiSpace |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 26.0 | 16.3 — better |
| Further details — not scored | ||
| Size | 10 MB | 153 MB |
| Age rating | 4+ | 17+ |
| Developer | Lars Hornbeck | Zaisland Inc. |
In-app purchases
KeepSmilin'
No in-app purchases
ZaiSpace
No in-app purchases









