Box Timer vs Kronos Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Box Timer
This app provides a simple, distraction-free timer designed for intense training sessions like CrossFit, HIIT, and functional fitness. It features a massive, high-contrast display, customizable interval options, and seamless audio cue integration with music apps. All workouts are automatically saved for easy tracking and reuse.
- Massive, high-contrast display
- Supports AMRAP, EMOM, For Time, Tabata
- Customizable work/rest intervals and rounds
- Works with music apps, clear audio cues
- Automatic workout history and reuse
- Background operation and screen lock support
- No ads or sign-up required
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SIMPLE TIMER BUILT FOR SERIOUS TRAINING Box Timer brings the power of a CrossFit box timer to your phone. Massive display. Zero distractions. Works perfectly whether you're in the gym, at home, or training outdoors. BUILT FOR CROSSFIT, HIIT & FUNCTIONAL FITNESS From crushing WODs to HYROX training and daily circuits — Box Timer handles every workout type with a clean interface that keeps you focused on the work, not the timer. EVERY WORKOUT TYPE COVERED - AMRAP (As Many Rounds As Possible) - EMOM (Every Minute On the Minute) - For Time workouts with countdown - Tabata (20/10 protocol) - Custom intervals with work/rest periods and rounds - Count up or count down modes DESIGNED FOR VISIBILITY – Massive timer display with high-contrast text – Landscape mode for maximum size – Readable from 10+ meters away – Perfect for garage gyms and home workouts AUDIO THAT WORKS WITH YOUR MUSIC – Crystal-clear audio cues for round changes – Works seamlessly with Spotify, Apple Music, and any audio app – No interruptions to your playlist – Simple settings for audio on/off SAVE YOUR GO-TO TIMERS – Save any timer as a named preset – Load it again with one tap from the timer screen – Edit or delete presets anytime – Never set up the same workout twice ZERO FRICTION EXPERIENCE – Works in background and with screen locked – No account or sign-up required – No ads – Lightning-fast timer setup – Runs smoothly even during intense workouts GLOBAL FITNESS COMMUNITY Available in English, Swedish, German, Spanish, Polish, French, and Japanese WHY ATHLETES CHOOSE BOX TIMER "This app is a must have for CrossFit workouts. Ideal for emoms, amraps and for time workouts. I even use it for strength work like squats by programming beeps for 45 seconds work and 2 minutes rest. And it’s free! I mean come on." Whether you're an elite athlete or just starting your fitness journey, Box Timer delivers exactly what you need: a powerful, distraction-free timer that stays out of your way. Get it now and experience the difference.
Kronos Studio
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Real strength workouts, written for the gear you've got and the 30 minutes you have. Open Kronos and today's session is ready: exercises, sets and the weights filled in, built for the equipment in front of you and the minutes you named. Different every time, shaped to your gear, your time, and how you actually feel today. You don't need more motivation. You need fewer decisions. IT ALREADY KNOWS • It already knows what's at your gym. • It already knows you only have 20 minutes. • It already knows you skipped Tuesday. • It already knows you hated lunges last time. • It already knows you've done legs twice this week. So you don't have to. HOW ONE TAP WORKS BUILT AROUND YOUR ACTUAL GEAR. A pair of dumbbells, a full gym, or nothing at all: tell Kronos what you have and it never writes a workout that needs a cable machine someone else is on. It fills in the weight, too, instead of leaving you a blank. HOTEL ROOM? HOTEL WORKOUT. Save your spots: gym, home, hotel, the park. Switch in one tap and the workout reshapes itself. Flag an injury once and it plans around that too. SWIPE EXERCISES, NOT EX'S. Love it, like it, meh, never again. Every swipe trains the next workout. PROGRAMS THAT BEND. Seventeen programs, 2 to 8 weeks each, written for your gear and shaped to your week instead of the other way round. The first session of every one is free. Any day you'd rather not be on one, build a single session instead. TRAIN WITH YOUR CREW Start a challenge, drop the code in the group chat, and every finished day puts your name on the Wall beside theirs. Pick a shape: a daily target, a ladder, a weekly max test, or just show up. Wildcards cover a missed day, streaks carry, and nobody gets a notification about your rest day. It's the part that makes people keep going, and it isn't a leaderboard for strangers. It's five people you already know. A BIG CALM TIMER We tell you what's next; you just lift. No tapping mid-set. Then swipe: right to keep, left for never again. Benchmarks are in there too. Cindy, Murph, and 42 more, each one scaled to the kit you actually own instead of the kit the workout assumed. LOGGING, WHEN YOU WANT IT Log a set if you want the number. Skip it if you don't. Your week, your lifts, and your history are there when you go looking, and never the price of getting a workout. PLUS A FREE INTERVAL TIMER. ACTUALLY FREE. HIIT, Tabata, EMOM, AMRAP, plus full custom intervals. Save unlimited presets. The screen stays awake, the cues mix over your music, and there are no ads. No account needed, no "Pro timer" upsell. Not now, not ever. WHAT WE BELIEVE Variety beats optimization. Constraints are features. Decisions are willpower taxes. Today's mood matters. Adherence beats intensity. Fun is a strategy. A B+ workout four days a week beats an A+ workout once. Every time. KRONOS PRO Free is the interval timer, forever, plus five workouts written for your gear and the first session of every program. Pro is the rest: a new workout every day you open the app, every session of all 17 programs, your whole history scored, up to 10 challenges at once, and crew insights. Prices are shown in the app and may vary by region. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms: https://getkronos.app/terms Privacy: https://getkronos.app/privacy Most fitness apps make you a workout plan. Kronos makes you a person who works out. The best workout is the one you'll actually do.
Screenshots
Verdict
The clearest difference is in-app purchases: Box Timer at none against Kronos Studio's 2. Kronos Studio's advantage is update cadence (every 2 days vs monthly) and iOS requirement (16.4 vs 18). On price, ads and 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
Both are free to download. Kronos Studio sells 2 in-app purchases, starting at $8.99 per month. Box Timer asks for nothing beyond the download.
Box Timer ships an update monthly, Kronos Studio every 2 days. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.
| Parameter | Box Timer | Kronos Studio |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (2.9K ratings) — better | — |
| Positive reviews | 93.4% of reviews | — |
| Number of ratings | 2.9K — better | — |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18 | 16.4 — better |
| Further details — not scored | ||
| Size | 7 MB | 97 MB |
| Age rating | 4+ | 12+ |
| Developer | Edvin Linden | Muller Labs LLC |
Bugs and requests
Box Timer
Reported bugs
3 issues- Timer not functioning properly in landscape mode
- Review prompt interfering with timer operation
- Compatibility issues on certain iPad models
Requested features
4 requests- Round count display during rest periods
- Customizable countdown beeps or sounds
- Ability to save and load custom timer settings
- Apple Watch app support
Kronos Studio
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Box Timer
No in-app purchases
Kronos Studio
- Kronos Pro Monthly$8.991 Month
- Kronos Pro Yearly$49.991 Year
Questions
Is Box Timer free?
Is Kronos Studio free?
Do Box Timer or Kronos Studio have ads?
Which is updated more often, Box Timer or Kronos Studio?
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