# Interval Randomizer vs Ding

The clearest difference is iOS requirement: Ding at 16.0 against Interval Randomizer's 18.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Interval Randomizer ships an update monthly, Ding every 6 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | Interval Randomizer | Ding |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ding-training-timer/id6749311355/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | — | Free |
| Size | 6 MB | 32 MB |
| Requires iOS | 18.2 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hitfire Production AB](https://appshunter.io/developer/1517601288) | [KATERINA SOURKOVA](https://appshunter.io/developer/1829942764) |

## What reviewers say

### Interval Randomizer

[App page](https://appshunter.io/ios/app/interval-randomizer-hiit/id6742220783)

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

**In-app purchases:** none


### Ding

[App page](https://appshunter.io/ios/app/ding-training-timer/id6749311355)

This app provides customizable timers for various activities like meditation, interval training, and general practice. It offers features for tracking progress, analyzing performance with visual charts, and organizing sessions with custom tags. The interface is clean and supports offline functionality.

**Highlights:** Customizable meditation timers with interval bells, Interval training for HIIT and circuit workouts, Stopwatch and random interval timer modes, Create and save custom training presets, Calendar view with training streaks, Visual analytics and progress charts, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Randomizer free?

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

### Is Ding free?

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

### Do Interval Randomizer or Ding have ads?

Neither Interval Randomizer nor Ding shows ads.

### Which is updated more often, Interval Randomizer or Ding?

Interval Randomizer ships an update monthly, and Ding every 6 weeks. Most recently, Interval Randomizer was updated on October 28, 2026 and Ding on October 28, 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.*