Comparison

Calculator83 vs Smart Reminder

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

Head to head
About

Calculator83

A minimalist calculator app focused on simplicity and a clean workflow. It offers both basic and scientific modes, allowing users to perform calculations without complex settings. Get started quickly with this straightforward tool.

Highlights
  • Minimalist design
  • Clean workflow
  • Basic mode
  • Scientific mode
  • Easy to use
Features
Read full description

Calculator83 is a minimalist calculator designed with simplicity to the core and an emphasis on a clean workflow. Be up and running in seconds! Featuring two modes of operation, basic and scientific. The goal of this app is to allow users to have a powerful calculator without the fuss of learning all the settings of a powerful calculator.

About

Smart Reminder

Features
Read full description

Smart Reminder helps you stay on top of your daily tasks, appointments, and important events with reliable, customizable alerts. Key Features: • Create reminders with custom titles and scheduled times • Choose from multiple repeat options: daily, weekly, weekdays, monthly, yearly, or custom intervals • Organize reminders into categories with custom icons (Work, Personal, Health, Shopping, Fitness, Education, Travel, and more) • Color-code your alerts for quick visual identification • Calendar view to see all your scheduled reminders at a glance • View today's reminders with countdown timers showing time remaining • Custom notification sounds with preview option • Lock screen notifications ensure you never miss an alert • Snooze functionality with customizable duration • Mark reminders as done when completed • Alarms persist after device restart Flexible Scheduling: Set one-time reminders or create recurring alerts with advanced options: Every few minutes or hours for frequent tasks Daily reminders at specific times Weekly alerts on selected days Monthly reminders on specific dates Yearly reminders for annual events Custom intervals (every N days, weeks, or months) Smart Categories: Organize your life with built-in and custom categories: Work tasks and meetings Personal appointments Health and medication reminders Shopping lists Fitness and workout schedules Education and study sessions Pet care routines Travel plans Food and meal prep Events and celebrations Multiple Views: Today: Focus on current day's reminders with live countdown Upcoming: See all future scheduled alerts By Category: Filter and manage reminders by type Calendar: Monthly overview with daily drill-down Reliable Notifications: Exact alarm scheduling for precise timing Lock screen display for immediate visibility Vibration patterns for silent mode awareness LED notifications on supported devices High-priority alerts that demand attention Free Features: Up to 5 active reminders All reminder types and repeat patterns Unlimited categories Custom notification sounds Color tags Calendar view All scheduling options Pro Subscription: Upgrade to Pro for unlimited alerts. Create as many reminders as you need without restrictions. Yearly subscription includes: Unlimited alerts for 1 year No reminder limits Support ongoing development The app is designed with a clean, modern interface following Material Design guidelines. Navigation is simple and intuitive with a bottom navigation bar for quick access to all sections. Smart Reminder uses exact alarm scheduling to ensure your notifications arrive on time, even when your device is in battery saver mode. Alarms are automatically rescheduled after device restart so you never miss an important reminder. Whether you need to remember to take medication, attend a meeting, pick up groceries, or call a friend, Smart Reminder provides the reliability and flexibility you need. Privacy Policy and Terms of Use: https://smallbird.tech/pp-reminder.html

Screenshots

Calculator833 screens
Smart Reminder4 screens

Verdict

The call

The clearest difference is in-app purchases: Calculator83 at none against Smart Reminder's 1. On price, ads, 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

Both are free to download. Smart Reminder sells 1 in-app purchase, starting at $19.99 per year. Calculator83 asks for nothing beyond the download.

Scorecard1 real difference · 9 level
Calculator83 versus Smart Reminder: the parameters behind the verdict, then further details
ParameterCalculator83Smart Reminder
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews62.5% of reviews—
Number of ratings4 — better—
Update frequencyEvery 20 months—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size10 MB4 MB
Age rating4+4+
DeveloperLyker Labs LLCTUFAN VATANDOST

In-app purchases

None

Calculator83

No in-app purchases

1 purchases

Smart Reminder

Subscriptions1
  • Unlimited Alerts$19.991 Year

Questions

Is Calculator83 free?
Calculator83 is free to download, with no in-app purchases.
Is Smart Reminder free?
Smart Reminder is free to download, with in-app purchases available.
Do Calculator83 or Smart Reminder have ads?
Neither Calculator83 nor Smart Reminder shows ads.

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