# DateTimeAtIsland vs SipFlow

The clearest difference is in-app purchases: SipFlow at none against DateTimeAtIsland's 3. SipFlow also leads on iOS requirement (17.0 vs 26.5). DateTimeAtIsland's advantage is update cadence (every 2 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. DateTimeAtIsland sells 3 one-off in-app purchases. SipFlow asks for nothing beyond the download.

DateTimeAtIsland ships an update every 2 days, SipFlow monthly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | DateTimeAtIsland | SipFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Size | 6 MB | 108 MB |
| Requires iOS | 26.5 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sungkwon Jung](https://appshunter.io/developer/1805429727) | [彤彤 王](https://appshunter.io/developer/1777692311) |

## What reviewers say

### DateTimeAtIsland

[App page](https://appshunter.io/ios/app/datetimeatisland/id6769559014)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $2.99 | one-time |


### SipFlow

[App page](https://appshunter.io/ios/app/sipflow-drink-water-daily/id6770829829)

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

**In-app purchases:** none


## Frequently asked questions

### Is DateTimeAtIsland free?

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

### Is SipFlow free?

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

### Do DateTimeAtIsland or SipFlow have ads?

Neither DateTimeAtIsland nor SipFlow shows ads.

### Which is updated more often, DateTimeAtIsland or SipFlow?

DateTimeAtIsland ships an update every 2 days, and SipFlow monthly. Most recently, DateTimeAtIsland was updated on October 31, 2026 and SipFlow on November 5, 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.*