# SweatTime vs Interval Flow

The clearest difference is in-app purchases: SweatTime at none against Interval Flow's 1. SweatTime also leads on iOS requirement (13.0 vs 15.6). Interval Flow's advantage is update cadence (every 2 weeks vs every 33 months). On price, ads and device support there is nothing between them.

Both are free to download. Interval Flow sells 1 one-off in-app purchase. SweatTime asks for nothing beyond the download.

SweatTime ships an update every 33 months, Interval Flow every 2 weeks. The most recent releases landed on September 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SweatTime | Interval Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sweattime/id1515823955/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 1 MB | 8 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [SMPL INC. (FL)](https://appshunter.io/developer/1515823954) | [Tegyaan](https://appshunter.io/developer/1711584632) |

## What reviewers say

### SweatTime

[App page](https://appshunter.io/ios/app/sweattime/id1515823955)

This app helps you track workout intervals with subtle haptic alerts. It provides a simple and effective way to manage your exercise timing without needing to constantly check your device.

**Highlights:** Workout interval tracking, Haptic alerts for interval changes, Simple and intuitive interface, Supports Apple Watch, iPhone, and iPod

**In-app purchases:** none


### Interval Flow

[App page](https://appshunter.io/ios/app/interval-flow/id6469113776)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multiple Programs | $3.99 | one-time |


## Frequently asked questions

### Is SweatTime free?

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

### Is Interval Flow free?

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

### Do SweatTime or Interval Flow have ads?

Neither SweatTime nor Interval Flow shows ads.

### Which is updated more often, SweatTime or Interval Flow?

SweatTime ships an update every 33 months, and Interval Flow every 2 weeks. Most recently, SweatTime was updated on September 26, 2026 and Interval Flow on October 10, 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.*