# Amperes 4 vs Picroll

The clearest difference is review sentiment: Picroll at 90% against Amperes 4's 47%. Picroll also leads on rating (4.8 vs 4.4) and update cadence (every 2 weeks vs every 2 months). Amperes 4's advantage is ratings volume (652 vs 68) and chart position (#59 vs unranked). On ads, in-app purchases, monetization model and device support there is nothing between them.

Amperes 4 costs $2.99 and Picroll $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Picroll holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Amperes 4 has 652 ratings behind it against 68, so its average is the more settled of the two. Written reviews point the same way: 47% of Amperes 4's written reviews are positive against 90% of Picroll's.

Amperes 4 ships an update every 2 months, Picroll every 2 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Amperes 4 | Picroll |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | [4.4 (652 ratings)](https://appshunter.io/ios/app/amperes-4-battery-charge-info/id1245475416/reviews) | **[4.8 (68 ratings)](https://appshunter.io/ios/app/picroll-tiny-screen-stitcher/id1645275205/reviews)** |
| Number of ratings | **652** | 68 |
| Positive reviews | 46.7% of reviews | **90.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Best chart rank | **#59** | — |
| Size | 36 MB | 61 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CrioSoft LLC](https://appshunter.io/developer/1245475415) | [TinyWork Apps](https://appshunter.io/developer/1289515980) |

## What reviewers say

### Amperes 4

[App page](https://appshunter.io/ios/app/amperes-4-battery-charge-info/id1245475416)

**Currently charting:** #59 Top Paid · Utilities (US App Store)

This app helps you understand your device's charging performance. It diagnoses charging issues, compares different charging methods, and monitors battery health with detailed data and alarms. Get insights into your power setup for optimal device longevity.

**Highlights:** Battery charging rates (mA and wattage), Hardware comparison testing, Detailed charging graphs, Global charging speed benchmarking, Intelligent battery alarms, System vital monitoring

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Uniquely useful
- 🚀 Only way to test charging
- 👍 Probando
- 👍 Used for YEARS
- 👍 Works well despite limited / restricted OS functions

**What reviewers complain about**

- 🐛 Does not work on iPhone as advertised
- 🐛 Doesn't give rate of charge
- 🐛 Useless on newer iOS
- 🐛 Slow and useless
- 🐛 Fraudulent App

**Reported bugs**

- Charging test results in total nonsense
- Doesn't work on iPad in landscape mode
- Login screen freezes
- Incompatible with older devices

**Requested features**

- Dark mode option
- Advanced analytics dashboard
- Ability to save charger/wire names
- Ability to monitor charging in the background


### Picroll

[App page](https://appshunter.io/ios/app/picroll-tiny-screen-stitcher/id1645275205)

Effortlessly combine multiple screenshots into a single, long image. Features include automatic stitching, custom layouts, privacy blurring, and phone frame overlays for professional-looking results.

**Highlights:** Auto-stitcher for seamless merging, Tailor-made layouts for perfect results, Picture splitter for social media, Mosaic tool for privacy blurring, Phone frame overlay for realistic look, Intelligent screen clearing, Screenshot editor with text and drawing tools

**In-app purchases:** none


## Frequently asked questions

### Is Amperes 4 free?

Amperes 4 costs $2.99, with no in-app purchases.

### Is Picroll free?

Picroll costs $4.99, with no in-app purchases.

### Which has better reviews, Amperes 4 or Picroll?

Picroll is rated higher. Amperes 4 averages 4.4 out of 5 from 652 ratings, while Picroll averages 4.8 from 68 ratings.

### Do Amperes 4 or Picroll have ads?

Neither Amperes 4 nor Picroll shows ads.

### Which is updated more often, Amperes 4 or Picroll?

Amperes 4 ships an update every 2 months, and Picroll every 2 weeks. Most recently, Amperes 4 was updated on November 1, 2026 and Picroll on October 30, 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.*