# Scientific Calculator++ vs Countdown Timer

The clearest difference is price: Countdown Timer at Free against Scientific Calculator++'s $2.99. Countdown Timer also leads on update cadence (every 3 weeks vs every 38 months) and ratings volume (1.4K vs 21). Scientific Calculator++'s advantage is rating (5.0 vs 4.5) and ads (none vs shown). On review sentiment and in-app purchases there is nothing between them.

Countdown Timer is free to download; Scientific Calculator++ costs $2.99 up front. Scientific Calculator++ sells 2 one-off in-app purchases and Countdown Timer sells 15 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scientific Calculator++ holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Countdown Timer has 1.4K ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 67% of Scientific Calculator++'s written reviews are positive against 60% of Countdown Timer's.

Scientific Calculator++ ships an update every 38 months, Countdown Timer every 3 weeks. Both last shipped on October 15, 2026.

## The numbers

| Metric | Scientific Calculator++ | Countdown Timer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/scientific-calculator-plus-plus/id581543619/reviews)** | [4.5 (1.4K ratings)](https://appshunter.io/ios/app/countdown-timer-clock-widget/id1123159300/reviews) |
| Number of ratings | 21 | **1.4K** |
| Positive reviews | **66.7% of reviews** | 60.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 38 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 103 MB |
| Requires iOS | **13.0** | 16.1 |
| Devices | iPad | **iPhone, iPad, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Dogahe](https://appshunter.io/developer/468657946) | [ZipoApps](https://appshunter.io/developer/1671444635) |

## What reviewers say

### Scientific Calculator++

[App page](https://appshunter.io/ios/app/scientific-calculator-plus-plus/id581543619)

This powerful calculator app offers advanced functions for complex calculations, including fraction manipulation, angle conversions, and equation solving. It features a history of your calculations and a user-friendly interface designed for iPad.

**Highlights:** Calculation history, Fraction manipulation, Angle conversion (degrees, minutes, seconds), Permutation and combination calculations, LCM and GCD, Equation solver, Coordinate conversion

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| List Size Plus | $0.99 | one-time |
| Quadratic Plus | $0.99 | one-time |


### Countdown Timer

[App page](https://appshunter.io/ios/app/countdown-timer-clock-widget/id1123159300)

Track upcoming events and past memories with a simple, elegant timer. Count down to special occasions or count up from significant dates. Enjoy a distraction-free interface and seamless syncing across Apple devices.

**Highlights:** Countdown to future events, Count up from past events, Minimalistic and intuitive interface, Track birthdays, holidays, and deadlines, Syncs across Apple devices

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $0.99 | per 7 days |
| Unlimited access | $1.99 | per 7 days |
| Unlimited access | $2.99 | per 7 days |
| Unlimited access | $3.99 | per 7 days |
| Unlimited access | $4.99 | per 7 days |
| Unlimited access | $5.99 | per 7 days |
| Unlimited access | $6.99 | per 7 days |
| Unlimited access | $7.99 | per 7 days |
| Unlimited access | $8.99 | per 7 days |
| Unlimited access | $9.99 | per year |
| Unlimited access | $19.99 | per year |
| Unlimited access | $29.99 | per year |
| Unlimited access | $39.99 | per year |
| Unlimited access | $49.99 | per year |
| Remove Ads | $1.95 | one-time |


## Frequently asked questions

### Is Scientific Calculator++ free?

Scientific Calculator++ costs $2.99, and also offers in-app purchases.

### Is Countdown Timer free?

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

### Which has better reviews, Scientific Calculator++ or Countdown Timer?

Scientific Calculator++ is rated higher. Scientific Calculator++ averages 5.0 out of 5 from 21 ratings, while Countdown Timer averages 4.5 from 1.4K ratings.

### Do Scientific Calculator++ or Countdown Timer have ads?

Countdown Timer shows ads; Scientific Calculator++ does not.

### Which is updated more often, Scientific Calculator++ or Countdown Timer?

Scientific Calculator++ ships an update every 38 months, and Countdown Timer every 3 weeks. Most recently, Scientific Calculator++ was updated on October 15, 2026 and Countdown Timer on October 15, 2026.

---

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