# Scientific calculator Lite vs Interval Timer

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.

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.

## The numbers

| Metric | Scientific calculator Lite | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interval-timer-focus-and-hiit/id6478761128/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Smit Pipaliya](https://appshunter.io/developer/1646406919) | [Evgeny Goncharov](https://appshunter.io/developer/1726728195) |

## What reviewers say

### Scientific calculator Lite

[App page](https://appshunter.io/ios/app/scientific-calculator-lite/id6463851192)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Calculator - Monthly | $9.99 | per month |


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-focus-and-hiit/id6478761128)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Annual Premium | $14.99 | per year |
| Phygital Timer Plus | $4.99 | one-time |


## Frequently asked questions

### Is Scientific calculator Lite free?

Scientific calculator Lite is free to download, with in-app purchases available.

### Is Interval Timer free?

Interval Timer is free to download, with in-app purchases available.

### Do Scientific calculator Lite or Interval Timer have ads?

Neither Scientific calculator Lite nor Interval Timer shows ads.

### Which is updated more often, Scientific calculator Lite or Interval Timer?

Scientific calculator Lite ships an update fortnightly, and Interval Timer every 2 weeks. Most recently, Scientific calculator Lite was updated on October 25, 2026 and Interval Timer on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*