Comparison

OzCharge BM12 vs Solar Panel Angle Calculator

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

Head to head
About

OzCharge BM12

Monitor your car battery's real-time voltage and test its cranking and charging systems. View all battery data directly on your mobile device via Bluetooth connection.

Highlights
  • Real-time voltage monitoring
  • Cranking system testing
  • Charging system testing
  • Bluetooth data transfer
  • Mobile device display
Features
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OzCharge BM12 is an application for vehicle battery,which can let them know the real-time voltage of car battery. It helps users to know the battery fully by testing cranking and charging system voltage. All of the datas can be showed on mobile through bluetooth.

About

Solar Panel Angle Calculator

Features
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Portable solar panels aren't roof panels. The "just tilt it to 30ยฐ" advice is simply wrong when you're only charging for a few hours at a campsite. SolarPanelAngle finds the angle and direction that harvest the most energy for YOUR hours in the sun โ€” then helps you physically aim the panel until it's right. HOLD YOUR PHONE TO THE PANEL - Lay your iPhone flat against the panel and it reads the real tilt and heading - A two-axis target shows exactly how to adjust: "raise 8ยฐ, swing 12ยฐ right" - Sound and haptics guide you when you can't see the screen โ€” because your hands are on the panel, not the phone - Turns green the moment it's aimed OPTIMIZED FOR YOUR HOURS, NOT THE WHOLE YEAR - Tell it how long you'll charge โ€” it finds the single best fixed angle for that window - Or track the sun right now for maximum instant output - A daily power curve shows what each angle earns, and compares flat vs best-fixed vs tracking A NUDGE WHEN IT'S TIME TO RE-TILT - Portable setups drift as the sun moves โ€” get reminded when to adjust - "14:00 โ€” set tilt to 55ยฐ", scheduled to your own rhythm - A shade warning before a tree or ridge blocks your panel, and a pack-up heads-up before sunset SEE THE SHADE COMING - Scan the horizon around your site and it predicts when the sun drops behind obstacles - "Effective sunlight 4.2 h (10:40โ€“14:50)" โ€” save each campsite and reuse it FULLY OFFLINE โ€” BUILT FOR THE BACKCOUNTRY - The sun is computed on your device from date and location. No internet, ever - Temperature loss is built in, so summer estimates match reality - One-time purchase. No subscription, no ads, no account. Nothing leaves your phone SolarPanelAngle is a planning aid. Estimates assume clear sky; real output varies with clouds, temperature, shade and panel condition. Never stare at the sun or point the camera at it for long.

Screenshots

OzCharge BM124 screens
Solar Panel Angle Calculator4 screens

Verdict

The call

The clearest difference is price: OzCharge BM12 at Free against Solar Panel Angle Calculator's $1.99. OzCharge BM12 also leads on iOS requirement (12.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

OzCharge BM12 is free to download; Solar Panel Angle Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

Scorecard2 real differences ยท 6 level
OzCharge BM12 versus Solar Panel Angle Calculator: the parameters behind the verdict, then further details
ParameterOzCharge BM12Solar Panel Angle Calculator
PriceFree โ€” better$1.99
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPhone, iPod โ€” betteriPhone
Requires iOS12.0 โ€” better17.0
Further details โ€” not scored
Size9 MB10 MB
Age rating4+4+
DeveloperAutech Australia Pty. Ltd.Netflowers Inc.

In-app purchases

None

OzCharge BM12

No in-app purchases

None

Solar Panel Angle Calculator

No in-app purchases

Questions

Is OzCharge BM12 free?
OzCharge BM12 is free to download, with no in-app purchases.
Is Solar Panel Angle Calculator free?
Solar Panel Angle Calculator costs $1.99, with no in-app purchases.
Do OzCharge BM12 or Solar Panel Angle Calculator have ads?
Neither OzCharge BM12 nor Solar Panel Angle Calculator shows ads.
Which is updated more often, OzCharge BM12 or Solar Panel Angle Calculator?
OzCharge BM12 ships an update every 6 weeks, and Solar Panel Angle Calculator every 6 weeks. Most recently, OzCharge BM12 was updated on October 14, 2026 and Solar Panel Angle Calculator on October 17, 2026.

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