# Flow Interval vs Countdown Timer

The clearest difference is update cadence: Countdown Timer at weekly against Flow Interval's every 3 months. Countdown Timer also leads on iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Flow Interval sells 3 one-off in-app purchases and Countdown Timer sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Flow Interval ships an update every 3 months, Countdown Timer weekly. The most recent releases landed on September 5, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Flow Interval | Countdown Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 1 MB | 71 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Takumi Kanaya](https://appshunter.io/developer/1852755878) | [Denys Koshman](https://appshunter.io/developer/1864985254) |

## What reviewers say

### Flow Interval

[App page](https://appshunter.io/ios/app/flow-interval/id6757172069)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Large Tip | $8.99 | one-time |


### Countdown Timer

[App page](https://appshunter.io/ios/app/countdown-timer-onedial/id6759490627)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneDial Pro Monthly | $3.99 | per month |
| OneDial Pro Yearly | $29.99 | per year |
| OneDial Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Flow Interval free?

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

### Is Countdown Timer free?

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

### Do Flow Interval or Countdown Timer have ads?

Neither Flow Interval nor Countdown Timer shows ads.

### Which is updated more often, Flow Interval or Countdown Timer?

Flow Interval ships an update every 3 months, and Countdown Timer weekly. Most recently, Flow Interval was updated on September 5, 2026 and Countdown Timer on September 9, 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.*