Personal Interval Timer vs ShotClock by RackDiscipline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Personal Interval Timer
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.
- Works with locked screen
- Plays with background music
- Saves custom presets
- Share workouts with friends
- History and progress charts
- Voice or bell notifications
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Simple interface to do sport without wasting time. Personal Interval Timer is good for Boxing, MMA, BJJ, HIIT, Tabata, and any activity with intervals. Features: - Works with the locked phone with a black screen - Works while your music is playing - Saving your customized presets/workouts - Sharing workouts with friends - Shows your history and the progress in charts - Voice or bell notifications
ShotClock by RackDiscipline
This configurable shot clock is designed for referees and tournament directors in cue sports like billiards and pool. It supports league and professional events, providing a simple timer solution for matches.
- Configurable shot clock
- Designed for cue sports
- Supports league events
- Supports pro events
- Simple timer interface
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Intended for referees and tournament directors. This simple 'shot clock' is configurable for league and pro-events. Designed for cue sports (billiards, 8-ball and 9-ball pool, etc.)
Screenshots
Verdict
The clearest difference is price: Personal Interval Timer at Free against ShotClock by RackDiscipline's $3.99. Personal Interval Timer also leads on update cadence (every 4 weeks vs every 3 months) and ratings volume (15 vs 2). ShotClock by RackDiscipline's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Personal Interval Timer is free to download; ShotClock by RackDiscipline costs $3.99 up front. Personal Interval Timer sells 1 one-off in-app purchase. ShotClock by RackDiscipline asks for nothing beyond the download.
ShotClock by RackDiscipline holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Personal Interval Timer has 15 ratings behind it against 2, so its average is the more settled of the two.
Personal Interval Timer ships an update every 4 weeks, ShotClock by RackDiscipline every 3 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.
| Parameter | Personal Interval Timer | ShotClock by RackDiscipline |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.8 (15 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 15 — better | 2 |
| Update frequency | Every 4 weeks — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.2 — better | 16.0 |
| Further details — not scored | ||
| Size | 7 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | AlexApps.Net Co | Paul Carpenter |
Customer experience
Personal Interval Timer
ShotClock by RackDiscipline
In-app purchases
Personal Interval Timer
- Remove Ads$5.99
ShotClock by RackDiscipline
No in-app purchases
Questions
Is Personal Interval Timer free?
Is ShotClock by RackDiscipline free?
Which has better reviews, Personal Interval Timer or ShotClock by RackDiscipline?
Do Personal Interval Timer or ShotClock by RackDiscipline have ads?
Which is updated more often, Personal Interval Timer or ShotClock by RackDiscipline?
Other comparisons
