MoodSyncMoodSync vs Bipolar Mood Companion
2 min read · Sources last checked: May 2026 · Editorial comparison, not affiliate.
TL;DR
Choose MoodSync if you want a quiet, clinical-style tracker where no AI sees your entries — with Watch and widget logging and a PDF report for appointments.
Choose Bipolar Mood Companion if you want AI-driven daily summaries and check-ins.
| Feature | MoodSync | Bipolar Mood Companion |
|---|---|---|
| Built for bipolar | ||
| Mood scale | 0–3 clinical-style anchors | App-defined scale with AI prompts |
| AI summaries / chats | ||
| Sleep and meds plotted with mood | See current app version | |
| Data storage | On device, with optional private iCloud sync | See current App Store privacy details |
| Account required | No MoodSync account | Often required for AI features |
| Free tier | Free, with an optional Pro tier | Free + paid AI features |
| Apple Watch app | ||
| Home & Lock Screen widgets | ||
| Apple Health sleep autofillApple Health is not mentioned on its listing; MoodSync auto-fills sleep hours, including past nights | ||
| Clinician PDF reportAdded to Bipolar Mood Companion recently; its listing does not specify the format | Exportable doctor report |
Built for bipolar
- MoodSync
- Bipolar Mood Companion
Mood scale
- MoodSync
- 0–3 clinical-style anchors
- Bipolar Mood Companion
- App-defined scale with AI prompts
AI summaries / chats
- MoodSync
- Bipolar Mood Companion
Sleep and meds plotted with mood
- MoodSync
- Bipolar Mood Companion
- See current app version
Data storage
- MoodSync
- On device, with optional private iCloud sync
- Bipolar Mood Companion
- See current App Store privacy details
Account required
- MoodSync
- No MoodSync account
- Bipolar Mood Companion
- Often required for AI features
Free tier
- MoodSync
- Free, with an optional Pro tier
- Bipolar Mood Companion
- Free + paid AI features
Apple Watch app
- MoodSync
- Bipolar Mood Companion
Home & Lock Screen widgets
- MoodSync
- Bipolar Mood Companion
Apple Health sleep autofill
Apple Health is not mentioned on its listing; MoodSync auto-fills sleep hours, including past nights
- MoodSync
- Bipolar Mood Companion
Clinician PDF report
Added to Bipolar Mood Companion recently; its listing does not specify the format
- MoodSync
- Bipolar Mood Companion
- Exportable doctor report
Bipolar Mood Companion is one of a wave of newer bipolar trackers that lean on language models to generate daily summaries and check-ins. The pitch is clear: more guidance, less staring at a chart. The trade-off is also clear: that guidance has to live somewhere.
Where AI summaries help
A morning prompt that asks how you slept, then writes a short reflection on yesterday, can be useful. It can keep someone logging who would otherwise drift. Smartphone monitoring works because the friction stays low2015; for some people, an AI exchange feels lower-friction than a chart.
Where AI summaries get complicated
To produce useful summaries, those models usually need your data on a server the AI vendor (or the app vendor) controls. For bipolar mood data — which often includes substance use notes, suicidal ideation flags, and medication history — that's a real shift in privacy posture.
MoodSync's choice is to not do that. Mood values stay on your device, with optional sync through your own private iCloud — never to a model.
Where MoodSync goes further
Mania has been measured on its own scale since 19781978. Ambulatory assessment in psychiatry is well-studied2013. The MoodSync approach is to lean on those instruments rather than on a model summarizing your week back to you.
Version 2.0 also widened the practical gap. MoodSync now has an Apple Watch app and complication, Home and Lock Screen widgets, Apple Health sleep autofill that fills in your hours for you (including past nights), and a clinician PDF report. Bipolar Mood Companion's listing mentions none of those surfaces. It did recently add an exportable doctor report, though the listing does not say what format it takes.
If the AI conversation is what helps you log, Bipolar Mood Companion may keep you tracking when MoodSync would not. If the privacy posture is what matters most, MoodSync is built around it.
Where to go next
FAQ
Does MoodSync use AI to summarize your data?
No. MoodSync surfaces patterns by plotting mood, sleep, and medication on the same chart and citing the research behind each insight. There is no AI write-up of your week.
Should I pay for AI insights in a mood tracker?
It depends on what you trust the AI with. Bipolar-disorder mood data is sensitive. MoodSync's editorial choice is to keep your data on your device and not run language-model summaries on it. Other apps make a different choice. That is for you to weigh.
Sources
- Young RC, Biggs JT, Ziegler VE, Meyer DA (1978). A rating scale for mania: reliability, validity and sensitivity, British Journal of Psychiatry. link
- Faurholt-Jepsen M, Frost M, Vinberg M, et al. (2015). Smartphone-based self-monitoring in bipolar disorder: an RCT, JAMA Psychiatry. link
- Trull TJ, Ebner-Priemer U (2013). Ambulatory assessment, Annual Review of Clinical Psychology. link