Tchin vs UNI for Change
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tchin
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Tchin est une application permettant d'inviter à prendre un verre toute personne se trouvant au même établissement que soi. Tu ne te souviens plus qui se trouve à côté de toi? Tu veux faire de nouvelles rencontres? Tu souhaites simplement profiter de promotions au bar de l'événement? Alors Tchin est fait pour toi ! Offrez un verre virtuellement, rejoignez-vous au bar, et Tchin !
UNI for Change
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The UNI for Change app brings together members of organizations committed to sustainability into an international community that mobilizes to take action. JOIN an international community mobilizing for sustainability! Together, let's increase our positive impacts in favor of the planet and humans. PARTICIPATE with members of your establishment, business or organization. ACT by carrying out simple and fun activities --> challenges to adopt a more sustainable lifestyle --> field activities to act collectively --> solidarity activities to support local associations DISCOVER lots of information to understand the impact of human activities and the importance of each of us acting at our scale, individually or collectively. PLAY team up and win competitions! With your loved ones, form a team and combine your individual actions and impacts CELEBRATE the results by discovering the number of challenges completed as well as the number of kg of CO2 saved individually and with your organization!
Screenshots
Verdict
The clearest difference is device support: Tchin at 3 against UNI for Change's 1. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Tchin ships an update every 3 weeks, UNI for Change every 5 weeks. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.
| Parameter | Tchin | UNI for Change |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 16.6 |
| Further details — not scored | ||
| Size | 37 MB | 65 MB |
| Age rating | 9+ | 4+ |
| Developer | Philippe Bonsang | Université de Liège |
In-app purchases
Tchin
No in-app purchases
UNI for Change
No in-app purchases
