GraouLib’ vs Impact
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GraouLib’
Rent electric bikes conveniently to explore your city. The app helps you find, unlock, and navigate with GPS. Enjoy a smooth ride with comfortable, modern e-bikes designed for everyone.
- Find nearby e-bikes 24/7
- Scan to unlock e-bikes
- In-app GPS navigation
- Smooth electric assistance
- Comfortable, low-step frame bikes
- Docking stations for easy returns
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Hop on an e-bike anytime and explore Eurométropole de Metz in the open air. ● The e-bikes ● The latest generation of GraouLib' e-bikes offers smooth electric assistance up to 25 km/h, reinforced tires, a comfy saddle, and a low-step frame designed for all body types. ● Scan and go ● Open the app to find a nearby e-bike 24/7. Unlock it by scanning the QR code and squeezing the left brake. Just like that, you’re on your way. ● Let the app guide you ● Wherever you’re headed, feel at home with in-app GPS navigation. All that’s left to do is enjoy the ride. ● Share the ride, share the joy ● End your trip by docking the bike at a station. Like magic, it’s now ready for the next rider! Got a question? Our support team is here for you by email (support@graoulib-eurometropolemetz.eu), phone (+33 9 74 99 18 91), or live chat via the app. — GraouLib', the self-service electric bike offer, is powered by Fifteen.
Impact
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Avec Impact, mesure ton empreinte carbone avec le simulateur basé sur Nos Gestes Climat (ADEME), prend conscience des ordres de grandeur avec le comparateur (impactco2.fr) et sélectionne des actions pour t'aider à réduire tes émissions de CO2. Impact est une application open-source et respectueuse de la vie privée.
Screenshots
Verdict
The clearest difference is update cadence: Impact at every 5 days against GraouLib’'s every 3 weeks. 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.
GraouLib’ ships an update every 3 weeks, Impact every 5 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | GraouLib’ | Impact |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 69.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 207 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Fifteen | Jessy Bogalho |
In-app purchases
GraouLib’
No in-app purchases
Impact
No in-app purchases
