Calm
Selected durations
Some existing meditations offer adjustable session lengths; this is not arbitrary-length generation of a new script.
Supporting sources:
Source checked . Availability can change.
Writing and creation controls · 4-app comparison
Request a target session length: Calm vs Down Dog vs Headspace vs Smiling Mind
Whether the app lets you request a target session length.
Compare by topic
Compare custom self-hypnosis creation and editing controls; existing recordings and clinical hypnotherapy are different offerings. Choosing a self-hypnosis app
Compare guided reflection, journaling and personalization tools for exploring how you see yourself. Self-concept journal prompts
Compare creating affirmation audio, cloning your voice, recording narration and replay controls. Own-voice app guide
Compare creating and revising original guided meditations, including scripts, voices, pauses and generation allowances. Create a custom meditation
Compare creating and editing personal tapping audio, rather than access to a library of recorded sessions. Choosing an EFT tapping app
Compare creating guided rehearsal audio around your goals, context and preferred pacing. What is mental rehearsal?
Compare custom yoga guidance, practice preferences and playback. See the guide for instructor-led class libraries. Choosing a yoga app
| Features1 selected | Calm Calm Premium |  Down Dog Down Dog membership |  Headspace Headspace individual |  Smiling Mind Free |
|---|---|---|---|---|
| Request a target session length |
Request a target session length: details
Down Dog
Choose session length
Set the class duration before generating a practice.
Supporting sources:
Source checked . Availability can change.
Headspace
Selected durations
Some course sessions offer selectable lengths in the player. Not every session has more than one length.
Supporting sources:
Source checked . Availability can change.
Smiling Mind
No listed support
Smiling Mind: Its free consumer app offers publisher-made sessions, mental-fitness activities and configurable routines. The reviewed tools do not list a personal script-writing and narration-generation workflow. Our review found no listed support for this criterion; this is a published-feature assessment, not an explicit vendor denial.
Supporting sources:
Source checked . Availability can change.
Sources and plan details
Sources for 1 features across Calm, Down Dog, Headspace, Smiling Mind. Annual prices show the full yearly charge in USD. “Limited” includes conditions. “No listed support” means the feature was not found in the reviewed official documentation.
Calm 1 researched
- Request a target session length: Selected durations
-
Some existing meditations offer adjustable session lengths; this is not arbitrary-length generation of a new script.
Checked . Sources: [1]
Calm sources
- Calm tools for advanced meditators · Checked 2026-10-09
Down Dog 1 researched
- Request a target session length: Choose session length
-
Set the class duration before generating a practice.
Checked . Sources: [1]
Down Dog sources
- Down Dog customizable practices · Checked 2026-10-09
Headspace 1 researched
- Request a target session length: Selected durations
-
Some course sessions offer selectable lengths in the player. Not every session has more than one length.
Checked . Sources: [1]
Headspace sources
- Headspace session length · Checked 2026-10-09
Smiling Mind 1 researched
- Request a target session length: No listed support
-
Smiling Mind: Its free consumer app offers publisher-made sessions, mental-fitness activities and configurable routines. The reviewed tools do not list a personal script-writing and narration-generation workflow. Our review found no listed support for this criterion; this is a published-feature assessment, not an explicit vendor denial.
Smiling Mind sources
- Smiling Mind free consumer app · Checked 2026-10-09
- Smiling Mind app and Routine guide · Checked 2026-10-09
- Smiling Mind voice and music settings · Checked 2026-10-09