# Ampere vs PrevaSync

The clearest difference is rating: Ampere at 3.8 against PrevaSync's 3.0. Ampere also leads on review sentiment (21% vs 0%) and update cadence (every 3 months vs every 8 months). PrevaSync's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

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

Ampere holds the better App Store score, 3.8 against 3.0. That said, the two scores are not equally well evidenced: Ampere has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 21% of Ampere's written reviews are positive against 0% of PrevaSync's.

Ampere ships an update every 3 months, PrevaSync every 8 months. The most recent releases landed on November 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ampere | PrevaSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (14 ratings)](https://appshunter.io/ios/app/ampere-battery-charge-test/id1317191964/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/prevasync/id1480060080/reviews) |
| Number of ratings | **14** | 2 |
| Positive reviews | **20.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 25 MB | 18 MB |
| Requires iOS | 17.6 | **9.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CrioSoft LLC](https://appshunter.io/developer/1245475415) | [Precor, Inc.](https://appshunter.io/developer/633688532) |

## What reviewers say

### Ampere

[App page](https://appshunter.io/ios/app/ampere-battery-charge-test/id1317191964)

Measure your device's charging speed with different chargers, cables, and wireless sources. Track app battery usage, estimate remaining time for activities, and compare charging accessories to find the best ones.

**Highlights:** Measure charging speed, Compare chargers and cables, Estimate remaining usage time, Track app battery usage, Create custom reference tables

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Disable Ads | $0.99 | one-time |

**What reviewers like**

- 🚀 Accurate measurements
- 👍 Simple and easy to use
- 🔋 Useful for testing chargers and cables

**What reviewers complain about**

- 🐛 Inconsistent results
- ⏱️ Slow testing process
- 💤 Doesn't work on latest iOS versions
- 📺 Intrusive ads
- 🤔 Questionable accuracy

**Reported bugs**

- Crashes on launch
- Fails to complete testing
- Incorrect wattage readings

**Requested features**

- Historical data logging
- Real-time monitoring
- Wireless charging support


### PrevaSync

[App page](https://appshunter.io/ios/app/prevasync/id1480060080)

This application enables technicians to configure PrevaSync Network Cards, facilitating the connection of fitness consoles to the Preva cloud. It is specifically designed for professionals who install and maintain Precor networked equipment.

**Highlights:** Configure PrevaSync Network Cards, Connect fitness consoles to Preva cloud, Designed for technicians, Service Precor networked equipment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ampere free?

Ampere is free to download, with in-app purchases available.

### Is PrevaSync free?

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

### Which has better reviews, Ampere or PrevaSync?

Ampere is rated higher. Ampere averages 3.8 out of 5 from 14 ratings, while PrevaSync averages 3.0 from 2 ratings.

### Do Ampere or PrevaSync have ads?

Ampere shows ads; PrevaSync does not.

### Which is updated more often, Ampere or PrevaSync?

Ampere ships an update every 3 months, and PrevaSync every 8 months. Most recently, Ampere was updated on November 2, 2026 and PrevaSync on October 24, 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.*