Comparison

Rentbrella vs charge7

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

Head to head
About

Rentbrella

Rentbrella provides on-demand umbrella rentals through a network of stations. Easily find, rent, and return umbrellas via the app to stay protected from rain and sun.

Highlights
  • Find nearest umbrella stations
  • Rent umbrellas via QR code
  • Return umbrellas at any station
  • Durable, reinforced umbrella design
  • Account and credit card registration
Features
Read full description

Rentbrella is here to make your life easier and keep the city always within your reach. Unexpected rains and UV rays can't be an obstacle in your days, not anymore. Next time the weather gets in your way, go to the nearest Rentbrella station and start sharing. Our umbrellas are designed to endure the most intense of rains with their reinforced fibreglass structure and hydrophobic fabric technology. How to start using Rentbrella: 1. Create an account and register a credit card 2. Use the map to find the closest Rentbrella station 3. Tap "I want an umbrella" and scan the station's QR Code 4. Use the station keyboard to type in the code generated on the app 5. Withdraw the umbrella and enjoy the city 6. Return it in any other Rentbrella station using the app What's the use of owning an umbrella if we're always without it when it rains? For this reason and many others, we believe that through sharing we can achieve a more efficient, conscious and innovative world. — Can we help? If you want to know more about Rentbrella, visit us at rentbrella.com and if you have any questions, check our 'Help' tab inside the app, we'll get you sorted.

About

charge7

Rent a portable charger on the go in Vienna. Find nearby stations, scan a QR code to rent a power bank with built-in cables, and return it to any station. Payment is handled via credit/debit cards or Alipay.

Highlights
  • Rent portable power banks
  • Find nearby rental stations
  • Integrated charging cables (Apple, USB-C, Micro USB)
  • QR code rental system
  • Return to any station
  • Credit/debit card payment
  • Alipay top-up with credits
Features
Read full description

On the road and the battery is empty? Desperately asking if someone has a charging cable with them and if there is a power outlet nearby? This has happened to us far too often... That's why we're building a powerbank sharing network in Vienna. What is charge7? Charge7 is a Viennese startup. Simply rent a powerbank to charge your smartphone in the restaurant or on the road. Each charge7powerbank comes with Apple, USB-C and Micro USB cable. So you don't need your own. You can return the charge7powerbank any station near you, which you can find in the app. How does it work? Open the charge7app to find the closest station next to you. Scan the QR code on the station to rent a power bank. Plug in using the cable included and charge on the go. Return the power bank to any station shown on the map. Where can I find charge7? We are working together with popular bars, cafes, shops and many more. We are always looking for new and exciting venues to partner with. Drop us a message in the app and tell us where you would like to see us next. How do I pay? Choose one of our payment methods in the app. It is possible to use all kind of credit and debit cards for paying the rental fee. You can also to Top-Up using bank cards or AliPay and get free credits! Scan the QR code on the station and the power bank will pop out of it! Don’t worry! We cap your daily spending and remember you to return it. Our pricing is fully transparent and displayed in the app. If you choose to keep the power bank, you will be charged its purchase price. Got a question? Visit www.charge7.at or contact us via the app.

Screenshots

Rentbrella4 screens
charge74 screens

Verdict

The call

The clearest difference is review sentiment: charge7 at 100% against Rentbrella's 46%. charge7 also leads on rating (5.0 vs 4.4) and iOS requirement (13.0 vs 15.1). Rentbrella's advantage is ratings volume (58 vs 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

charge7 holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Rentbrella has 58 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 46% of Rentbrella's written reviews are positive against 100% of charge7's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Rentbrella versus charge7: the parameters behind the verdict, then further details
ParameterRentbrellacharge7
PriceFreeFree
Rating4.4 (58 ratings)5.0 (1 ratings) — better
Positive reviews45.6% of reviews100.0% of reviews — better
Number of ratings58 — better1
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.113.0 — better
Further details — not scored
Size82 MB41 MB
Age rating+44+
DeveloperRentbrella S.A.JZ Mobile Payment Services GmbH

Customer experience

Rentbrella

All ratings56 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews79 reviews
Positive45.6%
Neutral3.8%
Negative50.6%

charge7

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Rentbrella

No in-app purchases

None

charge7

No in-app purchases

Questions

Is Rentbrella free?
Rentbrella is free to download, with no in-app purchases.
Is charge7 free?
charge7 is free to download, with no in-app purchases.
Which has better reviews, Rentbrella or charge7?
charge7 is rated higher. Rentbrella averages 4.4 out of 5 from 58 ratings, while charge7 averages 5.0 from 1 ratings.
Do Rentbrella or charge7 have ads?
Neither Rentbrella nor charge7 shows ads.
Which is updated more often, Rentbrella or charge7?
Rentbrella ships an update every 2 months, and charge7 every 2 months. Most recently, Rentbrella was updated on November 11, 2026 and charge7 on November 3, 2026.

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