Comparison

Amperes 4 vs Picroll

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Amperes 4

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
Currently charting
Read full description

Take Control of Your Power with Amperes 4 Stop guessing why your phone is charging slowly. Amperes 4 is the ultimate diagnostic tool designed to help you test your charging setup, identify faulty hardware, and monitor your device's health with professional-grade precision. Key Features Battery Charging Rates: Get the mA and wattage data to see exactly how much juice is flowing into your battery. Hardware Comparisons: Side-by-side testing for wired vs. wireless chargers, power banks, and different cable types. Deep Data & Graphs: Visualize your charging sessions with detailed, interactive graphs that track performance over time. Global Benchmarking: Compare your charging speeds with other users online to see if your gear is performing at its peak. Intelligent Battery Alarm: Get notified the moment your battery reaches your desired level to help prolong its lifespan. System Vital Monitoring: Track thermal status, memory usage, and disk space alongside your battery metrics. Professional Testing Tools Customized Logging: Add notes about wire brands or charger models to your tests for future reference. Color-Coded Results: Intuitive UI instantly shows you if a charger is "Good," "Average," or "Bad." Exportable Data: Need the raw numbers? Export your test results for external analysis or record-keeping. Why Amperes 4? Whether you are testing a brand-new GaN charger, verifying a "fast-charging" cable, or troubleshooting a power bank, Amperes 4 gives you the transparency you need to keep your devices running efficiently. Stop wasting time with bad cables. Get the data. Get Amperes 4.

About

Picroll

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
Read full description

Introducing Picroll - the ultimate app for effortless long screenshot stitching and editing! Are you tired of struggling to piece together multiple screenshots to get the perfect long screenshot? Look no further than Picroll! Our advanced auto-stitcher feature enables you to seamlessly stitch together multiple screenshots with ease. With our tailor-made layouts, picture splitter, mosaic tool, phone frame overlay, and intelligent screen clearing feature, you'll have everything you need to create stunning long screenshots in seconds. Here are some of the key features that make Picroll stand out: - Auto-Stitcher Our advanced auto-stitcher feature automatically detects and stitches together multiple screenshots for a seamless long screenshot experience. You won't need to worry about manually piecing together your screenshots - Picroll does it all for you! - Tailor-Made Layouts We understand that every screenshot is unique, which is why we offer tailor-made layouts to ensure your long screenshots look perfect every time. With multiple layout options to choose from, you'll be able to create long screenshots that meet your exact specifications. - Picture Splitter With our picture splitter, you can easily divide a single image into multiple pictures. This feature is perfect for sharing screenshots on social media or with your friends. - Mosaic Tool Protect your privacy and blur out sensitive information with our mosaic tool. You can easily add a mosaic effect to any part of your screenshot to hide personal information or create an artistic effect. - Phone Frame Overlay Add a touch of style to your screenshots with our phone frame overlay. Our app comes with a range of phone frames to choose from, giving your screenshots a realistic look. - Intelligent Screen Clearing Our intelligent screen clearing feature automatically removes status bars and scrollbars from your screenshots. This ensures your long screenshots look professional and clean. - Screenshot Editor With our editing tools, you can add text, watermarks, and even draw on your screenshots using markers or brushes. Our app makes it easy to edit your screenshots to meet your needs. - Scrollable Screenshots With our scrollable screenshots feature, you can capture entire web pages or social media feeds with ease. Picroll can take long screenshots of scrollable pages such as Instagram and Snapchat, allowing you to capture every detail. Picroll is the ultimate tool for anyone who needs to capture and edit long screenshots. Whether you're a creator, social media influencer, or just someone who loves taking screenshots, our app has everything you need to create stunning long screenshots in seconds. Download Picroll today and elevate your long screenshot game! --- Privacy Policy: http://bit.ly/3zdyfLu Terms of Use: http://bit.ly/40nMol2

Screenshots

Amperes 44 screens
Picroll4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 4 level
Amperes 4 versus Picroll: the parameters behind the verdict, then further details
ParameterAmperes 4Picroll
Price$2.99 — better$4.99
Rating4.4 (652 ratings)4.8 (68 ratings) — better
Positive reviews46.7% of reviews90.5% of reviews — better
Number of ratings652 — better68
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#59 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS17.013.0 — better
Further details — not scored
Size36 MB61 MB
Age rating4+4+
DeveloperCrioSoft LLCTinyWork Apps

Customer experience

Amperes 4

All ratings644 ratings
Positive86.3%
Neutral3.4%
Negative10.2%
Written reviews229 reviews
Positive46.7%
Neutral8.3%
Negative45.0%

Picroll

All ratings67 ratings
Positive94.0%
Neutral1.5%
Negative4.5%
Written reviews21 reviews
Positive90.5%
Neutral4.8%
Negative4.8%

Bugs and requests

Amperes 4

Reported bugs

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

Requested features

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

Picroll

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Amperes 4

No in-app purchases

None

Picroll

No in-app purchases

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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