# Cable Calc+ vs Ampere

The clearest difference is in-app purchases: Cable Calc+ at none against Ampere's 1. Cable Calc+ also leads on ads (none vs shown) and rating (4.0 vs 3.6). Ampere's advantage is ratings volume (12 vs 2). 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. Cable Calc+ asks for nothing beyond the download.

Cable Calc+ 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 2, so its average is the more settled of the two. Written reviews point the same way: 38% of Cable Calc+'s written reviews are positive against 21% of Ampere's.

Cable Calc+ ships an update every 4 months, Ampere every 3 months. The most recent releases landed on October 13, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Cable Calc+ | Ampere |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/cable-calc-plus/id557595191/reviews)** | [3.6 (12 ratings)](https://appshunter.io/ios/app/ampere-battery-charge-test/id1317191964/reviews) |
| Number of ratings | 2 | **12** |
| Positive reviews | **37.5% of reviews** | 20.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 25 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Megger](https://appshunter.io/developer/557595194) | [CrioSoft LLC](https://appshunter.io/developer/1245475415) |

## What reviewers say

### Cable Calc+

[App page](https://appshunter.io/ios/app/cable-calc-plus/id557595191)

This tool assists electrical contractors by calculating cable selection and voltage drop for installations up to 25KW and 100A. It supports various cable types and includes reference methods, educational videos, and a guide to electrical test instruments.

**Highlights:** Cable selection calculator, Voltage drop calculator, Supports various cable types (SWA, Fire proof, Tri rated, Twin and earth), Reference methods, Electrical test instrument guide, Educational videos

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Cable Calc+ free?

Cable Calc+ is free to download, with no in-app purchases.

### Is Ampere free?

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

### Which has better reviews, Cable Calc+ or Ampere?

Cable Calc+ is rated higher. Cable Calc+ averages 4.0 out of 5 from 2 ratings, while Ampere averages 3.6 from 12 ratings.

### Do Cable Calc+ or Ampere have ads?

Ampere shows ads; Cable Calc+ does not.

### Which is updated more often, Cable Calc+ or Ampere?

Cable Calc+ ships an update every 4 months, and Ampere every 3 months. Most recently, Cable Calc+ was updated on October 13, 2026 and Ampere on October 26, 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.*