Comparison

Soap Lye Calculator vs NapStop Pro

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

Head to head
About

Soap Lye Calculator

Features
Read full description

Create perfectly balanced soap recipes with confidence. Soap Lye Calculator is a precise and easy-to-use tool designed for soap makers who want reliable results every time. Whether you're crafting your first batch or refining advanced formulations, this app helps you calculate accurate lye amounts, adjust oil ratios, and build custom recipes with ease. No more guesswork. No more wasted batches. Powerful Features Accurate Lye Calculations Calculate exact NaOH and KOH amounts based on your chosen oils and superfat levels. Get safe, reliable results every time. Custom Oil Blends Create and adjust recipes using multiple oils. Fine-tune your formulations to achieve the perfect balance of hardness, cleansing, and conditioning. Real-Time Updates Instantly see how changes affect your recipe. Modify oil weights, percentages, or lye concentration and get immediate feedback. Beginner-Friendly, Expert-Ready Simple enough for beginners, powerful enough for experienced soap makers and professionals. Clean & Focused Design A calm, distraction-free interface designed to help you focus on your craft. Why Choose Soap Lye Calculator? Soap making is both a science and an art. Precision mattersβ€”and small mistakes can ruin an entire batch. This app gives you the tools to work accurately and confidently, so you can focus on creativity instead of calculations. Perfect For β€’ Cold process soap makers β€’ DIY skincare enthusiasts β€’ Handmade business owners β€’ Hobbyists and professionals Make Better Soap Experiment with new ideas, refine your formulas, and create high-quality soap with consistent results. Simple. Precise. Made for soap makers.

About

NapStop Pro

Features
Read full description

NapStop is the GPS location alarm designed for commuters who want to rest during their journey. Whether you ride the bus, train, or ferry, NapStop watches your location and wakes you up before you reach your stop. HOW IT WORKS Set your destination, and NapStop monitors your position using GPS and geofencing. When you approach your stop, you get a gentle heads-up. When you arrive, the alarm rings loud and clear, even in silent mode. KEY FEATURES GPS Geofencing NapStop uses CoreLocation to track your position with precision. Set any destination by searching for a place, and the app creates a virtual boundary around it. Approach and Arrival Alerts Get a two-stage warning system. The approach alert notifies you when you are getting close, giving you time to gather your things. The arrival alarm rings when you have reached your destination. Overshoot Detection If you pass your stop without noticing, NapStop detects that you are moving away and triggers an alert so you can take action quickly. Works in the Background NapStop continues monitoring even when your screen is off or you are using another app. Lock your phone, read a book, or take a nap with confidence. Silent Mode Bypass The alarm plays at full volume even when your phone is set to silent. You will not sleep through your stop. Live Activity See your remaining distance right on the Lock Screen and Dynamic Island. No need to unlock your phone to check your progress. Subway and Tunnel Support When GPS signal is lost in tunnels or underground, NapStop uses CoreMotion to estimate your position based on your last known speed and direction. Customizable Radius Adjust the approach radius from 500 meters to 5 kilometers and the arrival radius from 100 meters to 2 kilometers to match your travel needs. Alarm History Review your past trips and alarm records anytime. Favorites Save your frequent destinations for one-tap alarm setup. NapStop is perfect for daily commuters, long-distance travelers, and anyone who has ever missed their stop. Download now and travel with peace of mind.

Screenshots

Soap Lye Calculator4 screens
NapStop Pro3 screens

Verdict

The call

The clearest difference is price: NapStop Pro at $2.99 against Soap Lye Calculator's $3.99. Soap Lye Calculator's advantage is iOS requirement (15.1 vs 17). On ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Soap Lye Calculator costs $3.99 and NapStop Pro $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences Β· 4 level
Soap Lye Calculator versus NapStop Pro: the parameters behind the verdict, then further details
ParameterSoap Lye CalculatorNapStop Pro
Price$3.99$2.99 β€” better
Update frequencyEvery 3 monthsβ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.1 β€” better17
Further details β€” not scored
Size34 MB4 MB
Age rating4+9+
DeveloperJelmer van Nussθ΄Ί 周

In-app purchases

None

Soap Lye Calculator

No in-app purchases

None

NapStop Pro

No in-app purchases

Questions

Is Soap Lye Calculator free?
Soap Lye Calculator costs $3.99, with no in-app purchases.
Is NapStop Pro free?
NapStop Pro costs $2.99, with no in-app purchases.
Do Soap Lye Calculator or NapStop Pro have ads?
Neither Soap Lye Calculator nor NapStop Pro shows ads.

Other comparisons