CharGo vs Gradient
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CharGo
Rent portable power banks from a network of stations to keep your devices charged on the go. Simply scan a QR code to rent, charge your phone or gadgets, and return to any station.
- Rentable power banks
- Network of charging stations
- Charge phones and gadgets
- Multiple charging cable types
- Return to any station
- Daily charge limit
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Chargo is Norway’s biggest power bank rental system! Through our network of stations offering rentable power banks, we aim to give everyone a portable charging option to make sure you will not run out of battery! Pick up a Chargo from a venue, charge your phone in the venue or on the go, then return the power bank to any of our charging stations. Same idea as publicly shared bikes! No need to worry about running out of battery again! How does it work Each of our charging stations is marked with a QR-code. Download our app, register with your phone number, scan the QR code, and a power bank will pop up, just like a toast from a toaster! Like a toast might charge your breakfast, with Chargo we aim to charge your day and night. Each power bank is equipped with charging cables for any phone – Apple, Micro-USB, and USB-C. So you don’t even have to worry about bringing a charging cable! You can also use it to charge other gadgets such as wearables or headphones. If you are on the run from one place to another, Chargo can charge you on your way. If you are at a restaurant, café or bar running out of juice, get a Chargo and charge for as long you would like. Return it to any station you choose - the same station, any other station available in the map’s app, or you can even bring it home, charge it at home and use it the next day if you would like! Where is it Chargo aims to have good coverage all across Oslo and we are always looking for new partner venues. Find our charging stations at kiosks, cafes, restaurants, bars, sport, and cultural arenas, museums, train stations. Where would you like to see a Chargo? Send us a message in the app or visit our website and tell us! How to pay Register your bank card in the app. We have a daily cap limit and will remind you to return the power bank. If you lose the power bank or forget to return it within three days, you will be charged a cost coverage. If you happen to find it again, it is yours to keep. The power bank can also be charged at home. Contact info Do you have any questions? Send us a message through the App, contact us at our Facebook page, visit our website www.chargo.io or send us an email at post@chargo.io.
Gradient
This app uses gamification to encourage users to reduce their electricity consumption. Follow simple daily tips to help a virtual fox thrive and work towards a lower energy bill. It requires no special hardware or utility account.
- Daily electricity saving tips
- Virtual fox companion
- Streak rewards
- Unlockable den items
- No hardware required
- Works on iPhone
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Gradient is a gamified way to use less electricity at home. Get a few easy tips each day, act on them, and watch your cute fox thrive. Skip them, and your fox's den goes dark. The visual nudge makes the small stuff stick, so you waste less power, work toward a lower bill and feel good about every bulb, lamp and socket you switch off. What you get: - Simple daily tips that take under a minute - A cute fox companion that reacts to every tip you act on - Streaks that reward showing up day after day - Mystery boxes and adventures that unlock items for your fox's den - Ideas for LED bulbs, lamps, the dryer, the dishwasher and space heaters PRIVATE & SIMPLE No smart home gear, no hardware and no utility account needed. Gradient works in any apartment, dorm or house with just your iPhone.
Screenshots
Verdict
The clearest difference is ads: Gradient at none against CharGo's shown. Gradient also leads on update cadence (every 5 days vs every 2 months) and monetization model (free vs ad-supported). CharGo's advantage is iOS requirement (15.5 vs 17.6). On price, 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.
CharGo ships an update every 2 months, Gradient every 5 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | CharGo | Gradient |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.5 — better | 17.6 |
| Further details — not scored | ||
| Size | 115 MB | 146 MB |
| Age rating | 4+ | 4+ |
| Developer | Chargo AS | RedCanyon LLC |
Customer experience
CharGo
Gradient
In-app purchases
CharGo
No in-app purchases
Gradient
No in-app purchases









