# HyNext vs SipFlow

The clearest difference is iOS requirement: HyNext at 15.0 against SipFlow's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. HyNext sells 2 in-app purchases, starting at $4.99 per month and SipFlow sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

HyNext ships an update every 4 days, SipFlow every 2 days. The most recent releases landed on October 29, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | HyNext | SipFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 43 MB | 9 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [YUYUAN LIU](https://appshunter.io/developer/6812409139) | [Stanislav Kotlyarenko](https://appshunter.io/developer/6819589804) |

## What reviewers say

### HyNext

[App page](https://appshunter.io/ios/app/hynext/id6812409137)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 完整版 · 月 | $4.99 | per month |
| 完整版 · 年 | $29.99 | per year |


### SipFlow

[App page](https://appshunter.io/ios/app/sipflow-water-tracker/id6819768243)

**Features:** macOS Compatibility, Apple Watch app, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SipFlow Plus Monthly | $2.99 | per month |
| SipFlow Plus Yearly | $14.99 | per year |
| SipFlow Plus Forever | $29.99 | one-time |


## Frequently asked questions

### Is HyNext free?

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

### Is SipFlow free?

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

### Do HyNext or SipFlow have ads?

Neither HyNext nor SipFlow shows ads.

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

HyNext ships an update every 4 days, and SipFlow every 2 days. Most recently, HyNext was updated on October 29, 2026 and SipFlow on November 1, 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.*