# Interval Exercise Timer ™ vs Delta

The clearest difference is ads: Delta at none against Interval Exercise Timer ™'s shown. Delta also leads on update cadence (every 3 days vs monthly) and iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Interval Exercise Timer ™ sells 5 in-app purchases, starting at $0.99 per 7 days and Delta sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Exercise Timer ™ ships an update monthly, Delta every 3 days. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Interval Exercise Timer ™ | Delta |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (20 ratings)](https://appshunter.io/ios/app/interval-exercise-timer/id6463520684/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 62 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Andy Sutanto](https://appshunter.io/developer/1659282966) | [MITHUN NATH EDAKKATTU MAYOORANADHAN](https://appshunter.io/developer/1866326672) |

## What reviewers say

### Interval Exercise Timer ™

[App page](https://appshunter.io/ios/app/interval-exercise-timer/id6463520684)

Optimize your exercise routines with a customizable interval timer. Set precise 'Prepare,' 'Work,' and 'Rest' durations, and manage multiple sets and rounds for efficient workouts. Save your custom settings for easy access to consistent training.

**Highlights:** Customizable Prepare, Work, and Rest timers, Multi-round and set options, Real-time progress tracking, Save and load custom timer settings, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Workout Timer Pro | $0.99 | per 7 days |
| Workout Timer Pro | $1.49 | per month |
| Exercise Timer Pro | $6.99 | per 6 months |
| Tabata Timer Pro | $19.99 | per year |
| Interval Timer Pro | $39.99 | one-time |


### Delta

[App page](https://appshunter.io/ios/app/delta-progressive-overload/id6760977282)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Delta Premium - Monthly | $4.99 | per month |
| Delta Premium - Annually | $49.99 | per year |


## Frequently asked questions

### Is Interval Exercise Timer ™ free?

Interval Exercise Timer ™ is free to download, with in-app purchases available.

### Is Delta free?

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

### Do Interval Exercise Timer ™ or Delta have ads?

Interval Exercise Timer ™ shows ads; Delta does not.

### Which is updated more often, Interval Exercise Timer ™ or Delta?

Interval Exercise Timer ™ ships an update monthly, and Delta every 3 days. Most recently, Interval Exercise Timer ™ was updated on October 7, 2026 and Delta on October 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.*