# Ampere vs AlwaysOn Clock

The clearest difference is in-app purchases: AlwaysOn Clock at none against Ampere's 1. AlwaysOn Clock also leads on ads (none vs shown) and rating (4.0 vs 3.6). Ampere's advantage is ratings volume (12 vs 1). On price, update cadence and device support there is nothing between them.

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

AlwaysOn Clock holds the better App Store score, 4.0 against 3.6. That said, the two scores are not equally well evidenced: Ampere has 12 ratings behind it against 1, so its average is the more settled of the two.

Ampere ships an update every 3 months, AlwaysOn Clock every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ampere | AlwaysOn Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (12 ratings)](https://appshunter.io/ios/app/ampere-battery-charge-test/id1317191964/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/alwayson-clock/id6744944707/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 20.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 0 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CrioSoft LLC](https://appshunter.io/developer/1245475415) | [Aly Youssef](https://appshunter.io/developer/1808124222) |

## 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


### AlwaysOn Clock

[App page](https://appshunter.io/ios/app/alwayson-clock/id6744944707)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ampere free?

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

### Is AlwaysOn Clock free?

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

### Which has better reviews, Ampere or AlwaysOn Clock?

AlwaysOn Clock is rated higher. Ampere averages 3.6 out of 5 from 12 ratings, while AlwaysOn Clock averages 4.0 from 1 ratings.

### Do Ampere or AlwaysOn Clock have ads?

Ampere shows ads; AlwaysOn Clock does not.

### Which is updated more often, Ampere or AlwaysOn Clock?

Ampere ships an update every 3 months, and AlwaysOn Clock every 4 months. Most recently, Ampere was updated on October 26, 2026 and AlwaysOn Clock on October 24, 2026.

---

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