# Kairos vs DrinkFirst

Kairos and DrinkFirst are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Kairos sells 3 in-app purchases, starting at $4.99 per month and DrinkFirst sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Kairos ships an update every 6 days, DrinkFirst every 4 days. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Kairos | DrinkFirst |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 4 days** |
| Size | 105 MB | 111 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HonestyVision](https://appshunter.io/developer/1804536258) | [Stefano Di Michele](https://appshunter.io/developer/1805661466) |

## What reviewers say

### Kairos

[App page](https://appshunter.io/ios/app/kairos-interval-timer/id6743784042)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro subscription monthly | $4.99 | per month |
| Pro subscription annually | $24.99 | per year |
| Lifetime Pro subscription | $19.99 | one-time |


### DrinkFirst

[App page](https://appshunter.io/ios/app/drinkfirst-water-app-blocker/id6806791805)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DrinkFirst Monthly | $9.99 | per month |
| DrinkFirst Annual | $39.99 | per year |
| DrinkFirst Annual | $39.99 | per year |
| DrinkFirst Annual | $59.99 | per year |


## Frequently asked questions

### Is Kairos free?

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

### Is DrinkFirst free?

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

### Do Kairos or DrinkFirst have ads?

Neither Kairos nor DrinkFirst shows ads.

### Which is updated more often, Kairos or DrinkFirst?

Kairos ships an update every 6 days, and DrinkFirst every 4 days. Most recently, Kairos was updated on October 30, 2026 and DrinkFirst on November 6, 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.*