# i vs Flip Clock

The clearest difference is in-app purchases: i at none against Flip Clock's 1. i also leads on ads (none vs shown) and iOS requirement (10.0 vs 13.0). Flip Clock's advantage is update cadence (weekly vs fortnightly). On price and device support there is nothing between them.

Both are free to download. Flip Clock sells 1 one-off in-app purchase. i asks for nothing beyond the download.

i ships an update fortnightly, Flip Clock weekly. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | i | Flip Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Size | 5 MB | 34 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Robo Electronics co., Ltd.](https://appshunter.io/developer/1232651973) | [Gun woo Kim](https://appshunter.io/developer/1700263119) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-dothermometer/id1546064427)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flip Clock

[App page](https://appshunter.io/ios/app/flip-clock-bedside-clock/id6792409903)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Ads-free + All Themes) | $9.99 | one-time |


## Frequently asked questions

### Is i free?

i is free to download, with no in-app purchases.

### Is Flip Clock free?

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

### Do i or Flip Clock have ads?

Flip Clock shows ads; i does not.

### Which is updated more often, i or Flip Clock?

i ships an update fortnightly, and Flip Clock weekly. Most recently, i was updated on October 2, 2026 and Flip Clock on September 29, 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.*