# WKGSIM vs Personal Interval Timer

The clearest difference is in-app purchases: WKGSIM at none against Personal Interval Timer's 1. WKGSIM also leads on ads (none vs shown) and iOS requirement (12.0 vs 14.2). Personal Interval Timer's advantage is update cadence (every 4 weeks vs every 7 months). On price and device support there is nothing between them.

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

WKGSIM ships an update every 7 months, Personal Interval Timer every 4 weeks. The most recent releases landed on March 26, 2026 and August 25, 2026 respectively.

## The numbers

| Metric | WKGSIM | Personal Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (14 ratings)](https://appshunter.io/ios/app/personal-interval-timer/id1479646964/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 4 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 7 MB |
| Requires iOS | **12.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MITSUNORI TERAGAMI](https://appshunter.io/developer/883571123) | [AlexApps.Net Co](https://appshunter.io/developer/972261962) |

## What reviewers say

### WKGSIM

[App page](https://appshunter.io/ios/app/wkgsim/id1445976080)

**Features:** macOS Compatibility

**In-app purchases:** none


### Personal Interval Timer

[App page](https://appshunter.io/ios/app/personal-interval-timer/id1479646964)

This app helps you manage timed workouts for sports like boxing, HIIT, and Tabata. It offers customizable presets, workout history tracking, and works with a locked screen and background music. Share your routines with friends and receive voice or bell notifications.

**Highlights:** Works with locked screen, Plays with background music, Saves custom presets, Share workouts with friends, History and progress charts, Voice or bell notifications

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $5.99 | one-time |


## Frequently asked questions

### Is WKGSIM free?

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

### Is Personal Interval Timer free?

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

### Do WKGSIM or Personal Interval Timer have ads?

Personal Interval Timer shows ads; WKGSIM does not.

### Which is updated more often, WKGSIM or Personal Interval Timer?

WKGSIM ships an update every 7 months, and Personal Interval Timer every 4 weeks. Most recently, WKGSIM was updated on March 26, 2026 and Personal Interval Timer on August 25, 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.*