Scientific calculator Lite vs Interval Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Scientific calculator Lite
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Calculator 17 is the ultimate mathematics tool with everything you need to do basic calculations, complete homework or assignments, study for exams and even manage expenses. AI Power by Calculator 17 • 17 Calculator for iPhone • Perform four fundamental operations and engineering calculations. • To start the engineering calculator, tap the engineering calculator icon. • To check the calculation history, tap the calculation history icon. To close the calculation history panel, tap the keypad icon. • You can use the previously inputted formulas. Tap the formula you need from the calculation history. • Perform basic calculations such as addition, subtraction, multiplication, and division • Do scientific operations such as trigonometric, logarithmic, and exponential functions THE #1 CALCULATOR AND MATH SOLVER APP • Study for exams hassle free • Get currency conversion prices • All new math solver • Calculator for iPad + • Check and mark your homework UPGRADE TO A PREMIUM MEMBERSHIP • 3-day FREE TRIAL • AD-FREE with no hidden purchases • Unlimited math problems • Unlimited fraction calculations & currency conversions (including Bitcoin) • Premium Customer Support *Math solving and step-by-step explanations are available in English only. Subscription Details: 1. Monthly - Subscription price: $9.99 Payment will be charged to iTunes Account at confirmation of purchase Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. No cancellation of the current subscription is allowed during active subscription period Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy policy : https://pipaliyasmit.wordpress.com/privacy-policy/ Terms of Use: https://pipaliyasmit.wordpress.com/terms-condition/
Interval Timer
This app provides versatile timers for various activities, including high-intensity interval training, Pomodoro technique, and meditation. Its intuitive design and customizable modes help users focus on their tasks or workouts without distraction.
- Rotary knob for time setting
- Four distinct timer modes (Timer, Pomodoro, Interval, Meditation)
- Customizable work/rest durations for intervals
- Automatic session tracking for Pomodoro
- Keyboard shortcuts for play/pause and reset
- Native notifications and haptic feedback
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Train smarter with Interval Timer -- the interval app built for HIIT, Tabata, boxing rounds, and deep work sessions. Set your time with a satisfying rotary knob, hit play, and focus. Four built-in modes cover every workflow -- from high-intensity circuits to calm meditation. FOUR MODES - Timer: Simple countdown up to 60 minutes. Drag the knob and go. - Pomodoro: Classic 25/5/15 technique with automatic work-break cycling and session tracking. - Interval: HIIT and boxing-style rounds with configurable work/rest durations. Perfect for Tabata, circuit training, and gym workouts. - Meditation: Mindfulness timer with a calm green accent and gentle completion sound. DESIGNED FOR FOCUS - Drag-to-set rotary knob with satisfying tick marks and progress arc - Each mode has its own accent color for instant recognition - Keyboard shortcuts: Space to play/pause, R to reset - Compact window that stays out of your way - Native notifications when your timer completes - Haptic feedback on supported devices Whether you are training at the gym, studying with Pomodoro, running boxing rounds, or winding down with breathwork -- Interval Timer gives you precise control without the clutter. Less setup. More flow. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Scientific calculator Lite at 13.0 against Interval Timer's 17.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Scientific calculator Lite sells 1 in-app purchase, starting at $9.99 per month and Interval Timer sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Scientific calculator Lite ships an update fortnightly, Interval Timer every 2 weeks. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.
| Parameter | Scientific calculator Lite | Interval Timer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 24 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Smit Pipaliya | Evgeny Goncharov |
In-app purchases
Scientific calculator Lite
- AI Calculator - Monthly3 Days trial$9.991 Month
Interval Timer
- Monthly Premium$2.991 Month
- Annual Premium7 Days trial$14.991 Year
- Phygital Timer Plus$4.99
Questions
Is Scientific calculator Lite free?
Is Interval Timer free?
Do Scientific calculator Lite or Interval Timer have ads?
Which is updated more often, Scientific calculator Lite or Interval Timer?
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