Comparison

Simple Calculator. vs SOS Light

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

Head to head
About

Simple Calculator.

A straightforward calculator designed for speed and accuracy, mimicking classic pocket calculators. It offers real-world logic, business-focused calculations like cost, sell, and margin, and a clean interface for effortless use.

Highlights
  • Real-world logic, no forced order of operations
  • Running total display
  • Cost, sell, margin calculations
  • Add/subtract percentages in one step
  • Clean, intuitive interface with large buttons
  • Minimal, non-intrusive ads
Features
Read full description

This is the calculator that gets it right—built for professionals, retailers, and anyone who needs fast, accurate math without the complexity. • Work smarter with real-world logic No forced order of operations—just like a classic pocket calculator with a running total. • Perfect for business use Easily handle cost, sell, and margin calculations. Add or subtract percentages in one step. • Clean, intuitive interface Large, labeled buttons and a crisp display make every calculation effortless. • Reliable and distraction-free Minimal ads, never intrusive—so you can stay focused, even in front of clients. Inspired by the Casio calculators you know and trust—modernized for your iPhone/ iPad. Download now and make everyday math faster, clearer, and smarter.

About

SOS Light

Features
Read full description

SOS Light — Notify your loved ones instantly when it matters most. Walking home alone late at night or feeling unsafe in an unfamiliar place? SOS Light allows you to pre-connect with family and friends via QR code, sending instant SOS alerts and your real-time location with a single tap. ■ How to Use 1. Scan QR codes to easily connect with family, friends, or partners. 2. Tap the SOS button in an emergency — sends a Push alert + real-time location to connected contacts. 3. Check received alerts and connection status in the SOS dashboard. ■ SOS — Emergency Alerts - Attracts attention nearby with screen flashes, camera light, loud sounds, and vibrations. - Delivers urgent Push notifications and precise location coordinates to family members. - Supports Home Screen/Lock Screen widgets and Shortcuts for ultra-fast triggering. - (Optional) Instantly opens your default SMS app pre-filled with an emergency message. ■ Family & Friends (QR Connection) - Seamless cross-platform connection (Android & iOS) via QR scanning/sharing. - Triggers high-priority full-screen alerts on the guardian’s device upon receiving an SOS. - View time, contact name, and location history with direct navigation app integration. ■ Safe Return Mode - Sends a gentle "Walking Home Safe" Push notification to selected contacts. - Perfect for everyday reassurance without triggering a high-priority emergency alarm. ■ Subscription & Receiver Limits Connecting family via QR is free and unlimited. The maximum number of contacts who can receive real-time SOS/Safe Return Push notifications depends on your subscription plan. ■ Important Notes - SOS Light is NOT a replacement for official emergency services (like 911, 112, or 119). In case of immediate life-threatening danger, always contact your local emergency services directly. - Push notifications and location sharing require an active internet connection, notification permissions, and location services enabled. - SMS dispatch opens your device's native messaging app for manual sending. Connect seamlessly between Android and iPhone. Set up your family QR connections today and stay safe with SOS Light.

Screenshots

Simple Calculator.4 screens
SOS Light4 screens

Verdict

The call

The clearest difference is in-app purchases: Simple Calculator. at none against SOS Light's 6. Simple Calculator. also leads on device support (3 vs 1). SOS Light's advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 months). On price 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

Both are free to download. SOS Light sells 6 in-app purchases, starting at $0.49 per month. Simple Calculator. asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Calculator. ships an update every 3 months, SOS Light every 5 days. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 6 level
Simple Calculator. versus SOS Light: the parameters behind the verdict, then further details
ParameterSimple Calculator.SOS Light
PriceFreeFree
Rating4.6 (1.6K ratings) — better—
Positive reviews65.1% of reviews—
Number of ratings1.6K — better—
Update frequencyEvery 3 monthsEvery 5 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better16.0
Further details — not scored
Size5 MB49 MB
Age rating4+4+
Developertasser gyatiJinYouL You You

Bugs and requests

Simple Calculator.

Reported bugs

2 issues
  • Incorrect calculation results in some cases
  • Ads appearing during critical usage scenarios

Requested features

3 requests
  • Add a dedicated 'C' clear button
  • Provide more customization options for key layout
  • Implement a history/memory function

SOS Light

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Simple Calculator.

No in-app purchases

6 purchases

SOS Light

Subscriptions6
  • Light$0.491 Month
  • Standard$0.991 Month
  • Plus$1.991 Month
Show 3 more
  • Pro$2.991 Month
  • Business$5.991 Month
  • Unlimited$11.991 Month

Questions

Is Simple Calculator. free?
Simple Calculator. is free to download, with no in-app purchases.
Is SOS Light free?
SOS Light is free to download, with in-app purchases available.
Do Simple Calculator. or SOS Light have ads?
Simple Calculator. shows ads; SOS Light does not.
Which is updated more often, Simple Calculator. or SOS Light?
Simple Calculator. ships an update every 3 months, and SOS Light every 5 days. Most recently, Simple Calculator. was updated on October 24, 2026 and SOS Light on October 6, 2026.

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