# Calki vs Countdown

The clearest difference is ads: Countdown at none against Calki's shown. Countdown also leads on rating (5.0 vs 4.8). Calki's advantage is update cadence (fortnightly vs monthly) and monetization model (ad-supported vs free with in-app purchases). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Calki sells 3 in-app purchases, starting at $0.99 per month and Countdown sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Countdown holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 16 and 16 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Calki ships an update fortnightly, Countdown monthly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Calki | Countdown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (16 ratings)](https://appshunter.io/ios/app/calki-scanner-calculator/id6747059181/reviews) | **[5.0 (16 ratings)](https://appshunter.io/ios/app/countdown-minimal-event-timer/id6753778108/reviews)** |
| Number of ratings | 16 | 16 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 52 MB | 5 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vimal Parthan](https://appshunter.io/developer/1819662283) | [Oluwadunsin Agbolabori](https://appshunter.io/developer/1836054537) |

## What reviewers say

### Calki

[App page](https://appshunter.io/ios/app/calki-scanner-calculator/id6747059181)

This app combines a powerful camera number scanner, a full-featured unit converter, and a beautifully designed calculator. It allows you to scan numbers from documents, convert units across various categories, and perform calculations with live previews and advanced history.

**Highlights:** Camera number scanner (OCR), Unit converter with 12 categories, Smart calculator with live preview, Advanced calculation history, Customizable themes and fonts, Ad-free experience

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calki Pro Monthly | $0.99 | per month |
| Calki Pro Yearly | $2.99 | per year |
| Calki Pro Lifetime | $5.99 | one-time |


### Countdown

[App page](https://appshunter.io/ios/app/countdown-minimal-event-timer/id6753778108)

Visually track upcoming events with a unique battery-style progress indicator. Offers customizable widgets, smart reminders, and instant calendar import. Designed for privacy and offline use, it helps you stay motivated by seeing time fill up towards your goals.

**Highlights:** Battery-style progress visualization, Multiple home screen widget styles, Lock screen widget support, Customizable smart reminders, Instant calendar event import, Private and offline functionality, Color and icon customization

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Big Tip | $4.99 | one-time |
| Huge Tip | $9.99 | one-time |
| Massive Tip | $19.99 | one-time |


## Frequently asked questions

### Is Calki free?

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

### Is Countdown free?

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

### Which has better reviews, Calki or Countdown?

Countdown is rated higher. Calki averages 4.8 out of 5 from 16 ratings, while Countdown averages 5.0 from 16 ratings.

### Do Calki or Countdown have ads?

Calki shows ads; Countdown does not.

### Which is updated more often, Calki or Countdown?

Calki ships an update fortnightly, and Countdown monthly. Most recently, Calki was updated on October 24, 2026 and Countdown on October 21, 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.*