# AmpUp vs Slé

The clearest difference is review sentiment: Slé at 100% against AmpUp's 37%. Slé also leads on rating (5.0 vs 4.4). AmpUp's advantage is ratings volume (4.2K vs 6) and chart position (#207 vs unranked). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Slé holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: AmpUp has 4.2K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 37% of AmpUp's written reviews are positive against 100% of Slé's.

AmpUp ships an update every 2 weeks, Slé every 3 weeks. The most recent releases landed on September 26, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | AmpUp | Slé |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (4.2K ratings)](https://appshunter.io/ios/app/ampup-ev-charging/id1451890303/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/sle/id6444618570/reviews)** |
| Number of ratings | **4.2K** | 6 |
| Positive reviews | 37.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | Free |
| Best chart rank | **#207** | — |
| Size | 118 MB | 59 MB |
| Requires iOS | **15.1** | 16.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [NAD Grid Corp](https://appshunter.io/developer/1449149285) | [Thrivity Corporation](https://appshunter.io/developer/1588252885) |

## What reviewers say

### AmpUp

[App page](https://appshunter.io/ios/app/ampup-ev-charging/id1451890303)

**Currently charting:** #207 Top Free · Navigation (US App Store)

Find, reserve, and pay for electric vehicle charging stations seamlessly. This app allows you to locate chargers, monitor your charging progress, and manage payments easily. It also offers notifications and a history of your charging sessions.

**Highlights:** Find EV chargers nearby or on route, Reserve chargers in advance, Scan QR code to start charging, In-app payment options, Monitor charging progress remotely, Receive charging notifications, View charging history and receipts

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 💡 Convenient location tracking
- 👍 Straightforward charging process
- 🚀 Reliable charging
- 👍 Helpful customer service

**What reviewers complain about**

- 🐛 Buggy app and unreliable chargers
- 💰 Expensive charging rates
- ⏱️ Slow charging speeds
- 🔒 Security and privacy concerns
- 🔋 Issues with idle fees and billing

**Reported bugs**

- App crashes and freezes
- Charging stations not working as expected
- Issues with QR code scanning and manual station ID entry
- Incorrect or missing charge session data
- Unexpected and unjustified charges

**Requested features**

- Improve app stability and reliability
- Provide more transparent pricing information
- Implement audible alerts for charge completion
- Enhance user experience for iPhone users
- Offer more payment options and integration with existing accounts


### Slé

[App page](https://appshunter.io/ios/app/sle/id6444618570)

Track your daily travel habits to understand their impact on air quality, traffic, and personal health. Get personalized tips to improve your score and compete with friends to foster a healthier community.

**Highlights:** Score daily trips, Connect with friends, Improve air quality, Reduce traffic congestion, Enhance personal health, Track progress, Community competition

**In-app purchases:** none


## Frequently asked questions

### Is AmpUp free?

AmpUp is free to download, with no in-app purchases.

### Is Slé free?

Slé is free to download, with no in-app purchases.

### Which has better reviews, AmpUp or Slé?

Slé is rated higher. AmpUp averages 4.4 out of 5 from 4.2K ratings, while Slé averages 5.0 from 6 ratings.

### Do AmpUp or Slé have ads?

Neither AmpUp nor Slé shows ads.

### Which is updated more often, AmpUp or Slé?

AmpUp ships an update every 2 weeks, and Slé every 3 weeks. Most recently, AmpUp was updated on September 26, 2026 and Slé on September 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*