Comparison

Sampling Calculator Lite vs Solar Panel Calculator Plus

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

Head to head
About

Sampling Calculator Lite

This tool helps calculate sampling plans based on ANSI/ASQ Z1.4 2013 and MIL-STD-105E standards. It assists in determining sampling size codes and inspection levels for quality control processes.

Highlights
  • ANSI/ASQ Z1.4 2013 compliance
  • MIL-STD-105E compliance
  • Single sampling size calculation
  • Normal and Reduced inspection
  • AQL range from 0.065 to 15
  • Supports size code letters I, II, and III
Features
Read full description

The sampling calculator conforms to ANSI/ASQ Z1.4 2013 and MIL-STD-105E Standards. NOTE: This calculator may be used as an aid to faster calculate the sampling plan needed, and always in conjunction or with the basic knowledge of the ANSI/ASQ Z1.4 standard. It does not replace the standards mentioned above. The sampling calculator covers single sampling size code letters I, II and III. Normal and Reduced with AQLs from 0.065 to 15. For the Full version of the calculator look for "Sampling Calculator" it contains all 7 code levels and tightened inspection type.

About

Solar Panel Calculator Plus

Calculate custom off-grid solar home power systems. Determine the exact number of solar panels and battery capacity needed for your energy usage. Helps plan system size, inverter requirements, and battery bank specifications.

Highlights
  • Calculate solar panel requirements
  • Determine battery capacity
  • Calculate inverter size
  • Estimate daily energy usage
  • Plan days of autonomy
  • Optimize battery life calculations
Features
Read full description

Solar Panel Calculator Plus calculate custom Off-Grid Solar Home Power Systems. Use these handy calculator to help decide which system size is right for you. You can calculate the Exact Number of Solar Panels You Need For Your Usage Plus the Space you need. Also include Battery Capacity for your Home Power Systems. Daily energy use: Find the energy used in a day. Figure out how long each electronic device will be run in hours during a day. Multiply the wattage of each device by its run-time to get the energy in watt-hours per day. Add up all the watt-hour values to get a total for your home. Example: Light bulbs run for 5 hours a day. Computer runs for 2 hours a day. 100 x 5 + 300 x 2 = 1100 watt-hours. Inverter size: To determine the inverter size we must find the peak load or maximum wattage of your home. This is found by adding up the wattage of the appliances and devices that could be run at the same time. Include everything from microwaves and lights to computers and clocks. The sum will tell you which inverter size you need. Example: A room has two 60 watt light bulb and a 300 watt desktop computer. The inverter size is 60 x 2 + 300 = 420 watts. Multiply with 1.2 or 1.5 into a safe area. Days of autonomy: Now decide how many days worth of energy you want to store in your battery bank. Generally this is anywhere from two to five. Battery bank capacity: Example: You want the battery bank to last three days without recharging and that you use 5.0 kwh per day. As 5.0 x 3 x 2 = 30.0kwh, this is the energy we need from the batteries. Converting this to AH we have to divide by the voltage of your system. This can be 12, 24 or 48 for commercial application. If we choose to use 48V, the minimum AH capacity is then 30 000/48 = 625 AH. Now if you divide by your battery's rating you find the number of batteries you must use. The larger the system you have, the higher the voltage you should have. It is normal to match a 12 V battery bank to a 400 W power system. A 5 kW system would work most appropriately with a 48 V wiring system, in order to decrease current flow in the wires. Note: All calculations assume only a 50% discharge to your batteries to optimize battery life. Note: Colder temperatures have a negative effect on the capacity of your battery bank. If your battery bank is always indoors in a heated area then you don't have a problem. But if they're stored in an unheated area during the winter then you'll need to account for this. Solar Panel: The most typical solar panel size used for residential installations is 65 inches by 39 inches. And the wattage output range from 200 - 330 watts. *Thanks for your support, stay tune for more update to come

Screenshots

Sampling Calculator Lite2 screens
Solar Panel Calculator Plus4 screens

Verdict

The call

The clearest difference is price: Sampling Calculator Lite at Free against Solar Panel Calculator Plus's $2.99. Sampling Calculator Lite also leads on update cadence (every 14 months vs every 47 months) and review sentiment (33% vs 25%). Solar Panel Calculator Plus's advantage is rating (3.3 vs 3.0) and ratings volume (23 vs 3). On ads, in-app purchases, device support and iOS requirement 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

Sampling Calculator Lite is free to download; Solar Panel Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Solar Panel Calculator Plus holds the better App Store score, 3.3 against 3.0. That said, the two scores are not equally well evidenced: Solar Panel Calculator Plus has 23 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 33% of Sampling Calculator Lite's written reviews are positive against 25% of Solar Panel Calculator Plus's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Sampling Calculator Lite ships an update every 14 months, Solar Panel Calculator Plus every 47 months. The most recent releases landed on August 19, 2026 and August 22, 2026 respectively.

Scorecard6 real differences · 4 level
Sampling Calculator Lite versus Solar Panel Calculator Plus: the parameters behind the verdict, then further details
ParameterSampling Calculator LiteSolar Panel Calculator Plus
PriceFree — better$2.99
Rating3.0 (3 ratings)3.3 (23 ratings) — better
Positive reviews33.3% of reviews — better25.0% of reviews
Number of ratings323 — better
Update frequencyEvery 14 months — betterEvery 47 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.112.0 — better
Further details — not scored
Size1 MB8 MB
Age rating4+4+
DeveloperJuan Manuel Alfredo SanchezNitrio

Customer experience

Sampling Calculator Lite

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Solar Panel Calculator Plus

All ratings23 ratings
Positive52.2%
Neutral4.3%
Negative43.5%
Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

In-app purchases

None

Sampling Calculator Lite

No in-app purchases

None

Solar Panel Calculator Plus

No in-app purchases

Questions

Is Sampling Calculator Lite free?
Sampling Calculator Lite is free to download, with no in-app purchases.
Is Solar Panel Calculator Plus free?
Solar Panel Calculator Plus costs $2.99, with no in-app purchases.
Which has better reviews, Sampling Calculator Lite or Solar Panel Calculator Plus?
Solar Panel Calculator Plus is rated higher. Sampling Calculator Lite averages 3.0 out of 5 from 3 ratings, while Solar Panel Calculator Plus averages 3.3 from 23 ratings.
Do Sampling Calculator Lite or Solar Panel Calculator Plus have ads?
Neither Sampling Calculator Lite nor Solar Panel Calculator Plus shows ads.
Which is updated more often, Sampling Calculator Lite or Solar Panel Calculator Plus?
Sampling Calculator Lite ships an update every 14 months, and Solar Panel Calculator Plus every 47 months. Most recently, Sampling Calculator Lite was updated on August 19, 2026 and Solar Panel Calculator Plus on August 22, 2026.

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