# JuggernautAI vs phase.fitness

> Both write the program for you instead of handing you a template. The difference is scope: one is built around the three competition lifts, the other around a week that also contains running, rowing and a bar.

phase.fitness · Compare · Updated 2 October 2026 · HTML version: https://www.phase.fitness/compare/juggernaut-ai

## The short answer

JuggernautAI is a powerlifting and powerbuilding app: you describe yourself and its algorithms build an individualized plan that adjusts to your feedback, on iOS and Android, at $34.99 a month or $349.99 a year after a two-week trial. phase.fitness plans three modalities in the same periodized program — barbell work, endurance and bodyweight skills — and executes them in the apps you already use rather than in itself. If your goal is a bigger total and nothing else, Juggernaut is the more focused tool. If your week has a long run in it, phase.fitness is the one that plans the whole week.

## What JuggernautAI is

An app that builds individualized powerlifting and powerbuilding programs from your answers and your session feedback, from a coaching company that has been publishing strength material since 2009.

Every value below was read on JuggernautAI's own site (https://juggernautai.app) on 20 September 2026. "Not stated" means we could not find it on the pages we read, not that the product cannot do it.

## Side by side

| | JuggernautAI | phase.fitness | Sources |
| --- | --- | --- | --- |
| **What it plans** | Powerlifting and powerbuilding — the site describes programs for a bigger total or bodybuilding goals. | Strength, cardio and calisthenics in the same periodized program, in any combination. | [JuggernautAI](https://juggernautai.app) · [phase.fitness](https://www.phase.fitness/features) — checked 20 September 2026 |
| **Price** | $34.99 a month or $349.99 a year, after a two-week free trial. | $34.90 every three months, or $104.70 a year. There is no monthly plan. | [JuggernautAI](https://juggernautai.app) · [phase.fitness](https://www.phase.fitness/pricing) — checked 20 September 2026 |
| **Where you train** | Sessions are run in the app itself; the pages we read do not mention sending them to another app or a watch. | Two-way with Garmin, Hevy, Intervals.icu and Liftosaur: planned sessions go out, completed ones come back. Sessions finished in phase.fitness can also be posted to Strava. | [phase.fitness](https://www.phase.fitness/integrations) — checked 20 September 2026 |
| **Platform** | iOS and Android — the site cites its App Store and Google Play rating. | A web app you install from the browser today; an iPhone and Apple Watch app is coming soon to the App Store. | [JuggernautAI](https://juggernautai.app) · [phase.fitness](https://www.phase.fitness/about) — checked 20 September 2026 |
| **Adapting after a block** | The site says the app learns from your feedback on every workout to shape the program. | Each phase is analysed when it ends — loads, sessions finished, sessions skipped — and the next one is written from it. | [JuggernautAI](https://juggernautai.app) · [phase.fitness](https://www.phase.fitness/ai-periodization) — checked 20 September 2026 |
| **Bodyweight skills** | Not mentioned on the pages we read, which describe an exercise database built around lifting. | Eight skills on deterministic progressions, run in a built-in player, inside the same week as the lifting. | [phase.fitness](https://www.phase.fitness/calisthenics-training-plan) — checked 20 September 2026 |

## When JuggernautAI is the better choice

- Your goal is a powerlifting total and your week contains nothing else.
- You want a meet-day plan with attempt selection, which Juggernaut builds from your training history.
- You want the coaching material — videos, seminars, a Q&A with the coaches — that comes with the subscription.
- You want a native app on your phone today and do not want to install a web app in the meantime.

## When phase.fitness is

- Your week has lifting and endurance in it, and you want them ordered rather than stacked.
- You already train in Hevy, Garmin, Intervals.icu or Liftosaur and want to keep doing that.
- You want calisthenics skills programmed alongside the barbell work.
- You would rather pay quarterly than monthly.

## The evidence

Read more in the knowledge base:

- [How to peak for a powerlifting meet](https://www.phase.fitness/learn/posts/how-to-peak-powerlifting-meet)
- [Block periodization: evidence and application](https://www.phase.fitness/learn/posts/block-periodization-evidence-application)
- [Programming cardio and strength training together](https://www.phase.fitness/learn/posts/cardio-strength-training-programming-together)

## Frequently asked questions

### Is phase.fitness a JuggernautAI alternative?

For a hybrid week, yes. phase.fitness plans strength, cardio and calisthenics in one periodized program and sends the sessions to the app you already train in. For a pure powerlifting total with meet-day attempt selection, Juggernaut is the more specialised tool.

### What does each one cost?

JuggernautAI lists $34.99 a month or $349.99 a year with a two-week trial, checked on their site in September 2026. phase.fitness is $34.90 every three months or $104.70 a year, and has no monthly plan.

### Can either one send workouts to my watch?

phase.fitness does: planned sessions go to Garmin, Hevy, Intervals.icu and Liftosaur, and the completed ones come back; sessions finished in phase.fitness can also be posted to Strava. The JuggernautAI pages we read do not mention sending sessions to another app or a watch.

Build your first program: https://www.phase.fitness/signup