Comparison

OneFlash vs MultiGroop

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

Head to head
About

OneFlash

Find nearby stations to rent portable phone chargers. Scan a QR code to unlock a battery, charge your device, and return it to any station in the network. Share power with friends and contribute to a more sustainable future.

Highlights
  • Locate nearby charging stations
  • Scan QR code to unlock battery
  • Charge multiple devices
  • Return battery to any station
  • 100% recyclable batteries
  • Flexible return policy
Read full description

How does OneFlash work? Locate the nearest OneFlash station. Scan the station's QR code to unlock a OneFlash portable battery. Grab the OneFlash battery and charge your smartphone! Performance Our 5000 mAh portable batteries can charge your phone from 20% to 100% in just one hour and can charge up to 3 smartphones. Mobility Return the OneFlash battery to any station in our network. Grab a battery in a café near Bastille metro and drop it off at a gym in République. Sharing Each OneFlash battery is equipped with 3 cables compatible with all smartphones. Charge up to 3 phones at once and share energy with your friends! Ecology OneFlash aims to reduce lithium overconsumption by offering a network of 100% recyclable rental portable batteries. We promote a sharing economy to reduce the purchase of personal external batteries. Proximity To make our rental and sharing system work for you, we've brought OneFlash to your favorite places, including shopping malls, gyms, airports, train stations, libraries, museums, and many more! Let us know where you'd like to see OneFlash stations! Accessibility We've made renting portable batteries convenient. That's why OneFlash is mostly free! To ensure availability for everyone, a €19 deposit is held but not charged. Plus, you have up to 4 days to return it. Additional Functionality At OneFlash, we think of everything. That's why we've added a micro USB port on each of our portable batteries. So, within the deposit period, you have the option to recharge the battery yourself. This gives you more flexibility and allows you to use the battery for as long as you need. Practical, right? What's New? We're always planning new features and regularly updating the app to provide you with the best OneFlash experience possible! We're Listening We're building OneFlash every day to enhance your experience. Your feedback matters! Send us your comments, suggestions, and recommendations at bonjour@oneflash.fr. P.S.: Don't forget to follow us on social media!

About

MultiGroop

Features
Read full description

Groop simplifie la gestion de vos campagnes de commandes groupees. Que vous organisiez un achat groupe de coquilles Saint-Jacques, d'huitres ou de tout autre produit, cette application vous accompagne de la prise de commande jusqu'a la livraison. GESTION DES COMMANDES - Ajoutez vos clients et leurs commandes en quelques secondes - Gerez plusieurs produits (variantes) avec prix, tailles et couleurs - Suivez chaque commande : commandee, payee, livree - Filtrez et recherchez parmi vos commandes - Organisez vos clients par categorie (famille, voisins, collegues...) SUIVI DES PAIEMENTS - Enregistrez les reglements par cheque ou especes - Visualisez en un coup d'oeil qui a paye et combien il reste a encaisser - Alertes automatiques pour les impayes TABLEAU DE BORD - Vue d'ensemble avec quantites totales, montants et participants - Detail par variante de produit - Indicateurs de livraison et d'encaissement EXPORTS PDF PROFESSIONNELS - Recapitulatif complet de la campagne - Bon de commande fournisseur (3 formats) - Fiche de distribution avec cases a cocher PAGE WEB DE COMMANDE - Generez un lien web unique pour votre campagne - Vos clients commandent depuis leur navigateur - La commande vous arrive par SMS, aucun serveur necessaire MESSAGES GROUPES - Envoyez des SMS a tous vos clients ou a une selection - Generez automatiquement un message d'invitation - Notifiez l'arrivee de la commande SAUVEGARDE ET RESTAURATION - Sauvegardez vos campagnes au format JSON - Restaurez ou transferez une campagne entre appareils - Importez une liste de clients depuis un fichier 100 % PRIVE Toutes vos donnees restent sur votre appareil. Aucune donnee n'est envoyee sur internet. Aucun compte requis.

Screenshots

OneFlash4 screens
MultiGroop4 screens

Verdict

The call

The clearest difference is in-app purchases: OneFlash at none against MultiGroop's 1. OneFlash also leads on iOS requirement (15.1 vs 17.0). MultiGroop's advantage is update cadence (daily vs fortnightly). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MultiGroop sells 1 one-off in-app purchase. OneFlash asks for nothing beyond the download.

UpkeepUpdate frequency

OneFlash ships an update fortnightly, MultiGroop daily. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
OneFlash versus MultiGroop: the parameters behind the verdict, then further details
ParameterOneFlashMultiGroop
PriceFreeFree
Rating3.3 (22 ratings) — better—
Positive reviews70.8% of reviews—
Number of ratings22 — better—
Update frequencyFortnightlyDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size28 MB2 MB
Age rating4+4+
DeveloperOneFlashrobert Oulhen

Bugs and requests

OneFlash

Reported bugs

6 issues
  • App is glitchy and unresponsive
  • Cannot change country for phone number
  • Does not send SMS confirmation code
  • Activation code not received via SMS
  • System does not detect battery return
Show 1 more
  • App proposes already reported damaged batteries

Requested features

3 requests
  • Allow email login option
  • Improve detection of battery return
  • Ensure cables are not damaged

MultiGroop

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

OneFlash

No in-app purchases

1 purchases

MultiGroop

One-time1
  • Groop Pro$3.99

Questions

Is OneFlash free?
OneFlash is free to download, with no in-app purchases.
Is MultiGroop free?
MultiGroop is free to download, with in-app purchases available.
Do OneFlash or MultiGroop have ads?
Neither OneFlash nor MultiGroop shows ads.
Which is updated more often, OneFlash or MultiGroop?
OneFlash ships an update fortnightly, and MultiGroop daily. Most recently, OneFlash was updated on November 7, 2026 and MultiGroop on October 31, 2026.

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