# Pair Cale vs Flip Clock

The clearest difference is review sentiment: Flip Clock at 100% against Pair Cale's 31%. Flip Clock also leads on rating (5.0 vs 4.0) and iOS requirement (14.0 vs 16.6). Pair Cale's advantage is update cadence (every 5 days vs fortnightly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Pair Cale sells 2 one-off in-app purchases and Flip Clock sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Flip Clock holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 31% of Pair Cale's written reviews are positive against 100% of Flip Clock's.

Pair Cale ships an update every 5 days, Flip Clock fortnightly. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Pair Cale | Flip Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/pair-cale/id1376462458/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flip-clock-digital-clock/id6596743151/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 31.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | Free with in-app purchases | Freemium |
| Size | 12 MB | 122 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kazumasa Shimomura](https://appshunter.io/developer/1110502851) | [深圳市未来技术科技有限公司](https://appshunter.io/developer/1590320102) |

## What reviewers say

### Pair Cale

[App page](https://appshunter.io/ios/app/pair-cale/id1376462458)

Easily share and sync work schedules in real-time with your partner. Ideal for couples with shift work, offering automatic updates, custom shifts, and a clean interface for effortless coordination.

**Highlights:** Real-time schedule synchronization, Automatic updates, Customizable shift names and colors, Offline access to synced schedules, Intuitive and minimalist design, Privacy-focused secure design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Show rokuyo(六曜) | $1.99 | one-time |
| Hide advertising | $2.99 | one-time |


### Flip Clock

[App page](https://appshunter.io/ios/app/flip-clock-digital-clock/id6596743151)

This app offers a visually appealing digital clock with a classic page-flipping animation and customizable themes. It can display seconds, dates, and features natural soundscapes for a calming environment. It also includes alarm and timed reminder functions.

**Highlights:** Full screen page flipping animation, Customizable themes and backgrounds, Displays seconds and date, Natural soundscapes for ambiance, Hour-by-hour and alarm clock functions, Assisted learning and focused work tool

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Members | $5.99 | per 7 days |
| Annual Membership | $29.99 | per year |


## Frequently asked questions

### Is Pair Cale free?

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

### Is Flip Clock free?

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

### Which has better reviews, Pair Cale or Flip Clock?

Flip Clock is rated higher. Pair Cale averages 4.0 out of 5 from 1 ratings, while Flip Clock averages 5.0 from 1 ratings.

### Do Pair Cale or Flip Clock have ads?

Neither Pair Cale nor Flip Clock shows ads.

### Which is updated more often, Pair Cale or Flip Clock?

Pair Cale ships an update every 5 days, and Flip Clock fortnightly. Most recently, Pair Cale was updated on September 23, 2026 and Flip Clock on September 13, 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.*