Last updated: October 6, 2026
Our pick for inner conflictInnerOS
The only IFS app where your parts answer back in their own voices, and the session ends with a decision, not a reflection.
- Ten distinct archetypal voices, not one AI guide reading a protocol
- Built for the stuck decision: when two parts of you want opposite things
- Ten-minute sessions that end in a concrete next step
- Remembers your patterns across weeks, so the same parts are recognisable
- iOS and Android. 7-day free trial.
Get InnerOS Internal Family Systems treats the mind as naturally made of parts: protectors, exiles, inner critics, and a calm Self that can lead them. Most IFS apps give you one AI guide walking you through a protocol. InnerOS, the IFS parts app, gives your parts separate voices and lets them argue it out, then ends the session with a decision.
Where InnerOS fits
InnerOS is the app we make, so treat this entry as ours and the rest of the page as our read of the field. It is built for the specific moment when part of you wants one thing and another part wants the opposite, and you cannot move. Instead of one AI guide walking you through a protocol, InnerOS gives the parts of you distinct voices drawn from ten Jungian archetypes, and they answer back about your actual situation. A session runs about ten minutes and ends in a concrete next step rather than an open reflection. It remembers your patterns across weeks, so the Sovereign that shows up before a hard decision is recognisably the same one as last month. Choose it if your problem is a decision you keep circling; choose something below if you want a guided clinical IFS protocol.
The other IFS apps
We make InnerOS, so read the above as ours. Everything below comes from each app’s own site, and for some of these problems they are the better answer than we are.
IFS Guide
Best for: Mapping your system by hand
IFS Guide is built around Sunny, an AI guide you can work with by voice or text, and it is the option to look at if you want to draw your inner system rather than have it drawn for you. Its manual parts mapper lets you place parts and the relationships between them by hand, and you keep a library of the parts you find. It also runs live workshops with facilitators and ships a library of educational video on the IFS model, so it leans further toward learning-and-community than most apps here. It offers a 14-day free trial.
Visit IFS Guide →IFS Buddy
Best for: Trying parts work for the first time
IFS Buddy is a browser-based chat companion and one of the earliest AI IFS tools, which makes it a low-commitment way to find out whether parts work lands for you at all. It offers three modes depending on where you are: Beginner introduces the model, Self-Finding starts from locating Self, and Unblending walks you out of being merged with a part. It keeps a list of the parts you discover and reflects a session review back to you afterwards. Its homepage offers a free chat, and says chats in the free version are not saved unless you sign up. It does not publish paid tiers there.
Visit IFS Buddy →Harmony
Best for: Voice sessions, and couples
Harmony is the most session-shaped of the tools here: you move between voice and text inside one sitting, and it can switch into a CBT mode when parts work is not what the moment needs. Its distinctive feature is a relationship mode where two people join the same session and are guided through understanding each other, which nothing else on this list does. Afterwards it produces a post-session analysis with parts maps and other visualisations, and it carries memory across sessions.
Visit Harmony →IFS Space
Best for: People who want the protocol published
IFS Space is built around the session itself and is voice-first from the ground up, with voice that sends when you stop speaking rather than on a button press. Its stated position is that clinical safety sequencing should be published rather than implied, and it assesses self-energy before going into deeper work. If your reservation about AI parts work is that you cannot tell what the model is actually doing with you, this is the one that argues that point directly.
Visit IFS Space →TraitPath
Best for: Starting from an assessment
TraitPath comes at parts work from the assessment end: you begin with a structured read of your parts and can add an AI companion on top of it. If you would rather see a picture of your system before talking to anything, this is the natural starting point.
Visit TraitPath →Common questions
Which IFS app is best?
It depends on what you need. InnerOS is our pick for a stuck decision, with ten parts of you answering in their own voices. IFS Buddy is the free way to try parts work. IFS Guide is for mapping your system by hand. Harmony is voice-first and works for couples. IFS Space publishes its protocol. TraitPath starts with an assessment.
What is an IFS app?
An IFS app helps you do Internal Family Systems parts work on your own. IFS treats the mind as made of parts, such as protectors, exiles and inner critics, with a calm Self that can lead them. An app gives you a structured way to meet those parts between therapy sessions, or without a therapist at all.
Is there an AI Internal Family Systems therapy app?
No app on this page is therapy, including ours. Several use AI. IFS Guide has an AI guide called Sunny. IFS Buddy is an AI chat. TraitPath has an optional AI companion. InnerOS uses AI to give ten parts of you their own voices. For treatment, work with a trained IFS practitioner.
Which IFS apps work by voice?
Harmony, IFS Space and IFS Guide all work by voice. Harmony lets you switch between speaking and typing in one session. IFS Space sends what you say when you stop speaking. IFS Guide works by voice or text. InnerOS is text only. If speaking matters most to you, pick one of those three.
Can an app replace IFS therapy?
No. None of the apps here, including ours, is therapy or a substitute for a trained IFS practitioner. They are self-reflection tools. They work best alongside therapy, where they give you more to bring in, or as a structured practice if you are not in therapy. In a crisis, contact a crisis line, not an app.
Is this page biased? You make one of these apps.
Yes, we make InnerOS and we have listed it first, so read it with that in mind. What we have tried to do is keep every claim about the other apps sourced from their own sites, describe who each one is genuinely best for, and not publish criticism of products we have not used. For several of the problems on this list, another app on it is the better answer than ours.