Disclosure: I make FightNome, one of the apps mentioned below. I've tried to write this so it's useful even if you never install mine. There's a side-by-side table of the main options at fightnome.app/compare/.
If you train alone at home, the hard part usually isn't motivation or equipment. It's that you pick every strike yourself. After a few rounds you fall back on the same three combos, your head switches off, and the bag stops teaching you anything. A combo-calling app fixes that by putting a voice in your ear that tells you what to throw. The catch is that "boxing app" covers very different products, so here's how I'd sort them.
Start with what you actually need
First ask one question: can you already throw a jab, cross and hook, and for Muay Thai a teep and a round kick, with decent form?
If not, you need instruction before you need a caller. A coach, a class or a video-based app with technique tutorials will help more. The Shadow Boxing App, for example, leans toward tutorials and lots of workout types. A caller assumes you know the strikes and just tells you which ones to throw and when.
If you can, a caller is where the value is. It works like pad work with a coach who never gets tired.
Five things that separate a good caller from a frustrating one
1. Can you keep your eyes off the screen?
This matters more than any feature list. If the combo only shows up on screen, you look down, drop your hands and stop watching the bag. The calls, the round start, the rest and the bell should all come through your ears. Test it with the phone in your pocket. If you keep reaching for it, it isn't working.
2. Recorded voice or text-to-speech?
Some apps use a synthetic voice, some use recorded human callouts, and Rounds & Commands lets you choose either. Synthetic voices are fine for slow drills. At speed, a clipped "hook" that sounds like "book" costs you a beat. Try one fast round before you commit.
3. Timing: on a rhythm or at random?
Most callers fire combos at random intervals, which is good for reaction work. Some tie the calls to a tempo, so you can train at a set pace and raise it over time. If you're working on rhythm and staying relaxed, a steady tempo helps. If you want sharper reactions, you want random timing or an adjustable call rate. Ideally the app does both.
4. Does it speak your sport?
Boxing apps usually call numbers (1 jab, 2 cross, 3 lead hook and so on) or punch names. That's fine for boxing and no use for Muay Thai. If you kick, check that the app calls kicks, knees and elbows, and whether it says which side, lead or rear. Shot Caller is built around Muay Thai and has 18 styles. Callout is boxing only. Check this before you pay, because it's the most common reason people delete these apps.
5. Can you build your own combos?
Random combos are fun for a week. After that you'll want to drill what your coach showed you on Tuesday. Look for a combo editor where you set the exact strikes in order. Callout lets you make custom combos, and so does FightNome.
Smaller things that add up
- Rounds and rest you can set. Three-minute rounds aren't sacred. Beginners often do better with two minutes on and one off.
- Conditioning between rounds. If you want a whole session and not just bag rounds, check whether the app can slot skipping, shadowboxing or bodyweight work between rounds.
- Offline. If you train in a garage with bad signal, make sure it works without a connection. FightFlow and ShadowBox both work offline.
- Hands-free control. Pausing from your headphones or the lock screen saves you pulling off a glove.
- Pricing model. This varies more than the features do. Boxa has no subscription: it's free or a one-time purchase. FightFlow has a free tier capped at 10 minutes a day, then paid plans including a lifetime option. Heavy Bag Pro has a free version with 3 workouts. Some apps, mine included, are subscription only. If you're not sure you'll stick with it, try the free ones first.
Popular apps that aren't combo callers
FightCamp is hardware plus video classes: trackers and a screen to follow. PunchLab is built around punch tracking. Both are good at what they do, but if what you want is a voice calling strikes while you hit the bag, they're a different kind of product.
Where FightNome fits
Since I made it, here's the honest version. FightNome is an audio-first pad-work trainer for boxing, Muay Thai, kickboxing and MMA. A recorded human voice calls every strike on the beat of the music, at a tempo you set from 74 to 128 BPM, so the phone stays in your pocket. You can build any combo strike by strike, or switch to reaction mode, where the coach throws random calls at you, 6 to 45 a minute. Punches are called as pad numbers 1 to 6. Kicks, elbows and knees are called by name, lead or rear. A workout mixes striking rounds with conditioning sections (rope, shadow, bodyweight), and you see the whole plan before you press play. There's no account, and you can play or pause from your headphones.
What it isn't: it doesn't teach technique from zero, there are no video lessons, and there's no free tier. It runs on iPhone (iOS 26 and newer) and Android. If you still need to learn the jab, start somewhere else and come back later.
A simple way to decide
- Can you throw the basic strikes cleanly? If not, get instruction first.
- Do you kick? Shortlist only apps that call kicks, knees and elbows by side.
- Install two or three and do one full session with each, phone in your pocket.
- Keep the one you never had to look at.
Whatever you pick, the app is only as good as the rounds you put in. Wrap your hands, keep your guard up when the voice goes quiet, and film yourself once a week so you see what the bag can't tell you.
Questions
What is a combo caller app?
An app that says the next strikes out loud while you shadowbox or hit the bag, the way a coach calls combos on the pads. It assumes you already know how to throw the strikes.
Which app should a complete beginner start with?
If you can't yet throw a jab, cross and hook with decent form, get instruction first: a coach, a class, or a video-based app with technique tutorials such as The Shadow Boxing App. A combo caller is more useful once you know the strikes.
Which combo callers call Muay Thai kicks, knees and elbows?
Shot Caller is built around Muay Thai and has 18 styles. FightNome calls kicks, knees and elbows by name, lead or rear. Callout is boxing only. Check that an app calls the side before you pay.
Are there free combo caller apps?
Boxa has no subscription: it is free or a one-time purchase. FightFlow has a free tier capped at 10 minutes a day. Heavy Bag Pro has a free version with 3 workouts. FightNome is subscription only and has no free tier.
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More: Combo caller apps compared · Boxing combo caller · Muay Thai round timer with callouts · FAQ