If you like the idea of an AI mood journal but do not want cloud processing, Daily Vibe is an on-device alternative. It requires no Studio AM account, stores entries locally by default, and runs its journal analysis on a compatible iPhone or iPad.
Studio AM makes Daily Vibe. To keep this comparison checkable, the competitor details below come from their own public privacy documentation rather than assumptions about what an “AI journal” must do.
What Stoic documents
Stoic’s current privacy, data, and AI page says ordinary journal data can remain local or use private iCloud sync. For its optional AI feature, it sends the current journal entry to OpenAI. Stoic says OpenAI may retain that content for up to 30 days and does not use it for training.
That is a clear, opt-in cloud-AI boundary, not evidence that the entire journal is routinely uploaded.
What Reflectly’s public policy supports
The public Reflectly privacy policy we found describes accounts, databases, and international server processing, but it was published in 2018 and does not clearly document where any current AI feature runs. It would be misleading to turn that old document into a confident claim about Reflectly’s present AI architecture.
The practical conclusion is narrower: Reflectly’s public policy does not give us a current on-device AI guarantee. Anyone deciding on that basis should check the latest in-app disclosure and policy.
What Daily Vibe guarantees
Daily Vibe analyzes journal text on-device. It selects mood and energy from bounded labels, extracts themes, checks displayed reflection excerpts against source entries, and calculates numeric trends in code. The model can still choose imperfectly, so the app does not present a reflection as fact, diagnosis, or medical advice.
Entries remain local by default. Optional private iCloud sync is off until you enable it and uses your private CloudKit database. Studio AM cannot read that database. An explicit Search the web button may open a declined Ask Your Trends question in DuckDuckGo; nothing is sent automatically.
| What matters | Daily Vibe | Stoic AI | Reflectly public policy |
|---|---|---|---|
| AI processing documented as on-device | Yes | No; current entry is sent for optional AI | Not documented in the public policy we found |
| Default/local storage option | Yes | Yes | Policy describes service databases |
| Account required by this product | No Studio AM account | Check current Stoic setup | Policy describes account data |
| Source-grounding design | Checked excerpts and code-calculated trends | See current product | Not specified in the policy |
Compatibility and subscription
Daily Vibe requires iOS or iPadOS 26. Apple Intelligence can provide the ready model; compatible devices can instead use an optional local download of about 0.9–2.6 GB. Devices below 3.5 GB of RAM cannot run the AI features.
Daily Vibe has no free feature tier. Eligible new subscribers may receive a 3-day trial, then pay $4.99 per month or $29.99 per year in the US. After expiry, saved entries and recordings remain readable, searchable, playable, exportable, and deletable.
See the complete current feature and privacy boundaries on the Daily Vibe page.
FAQ
Does Stoic send journal text to an AI provider?
For its optional AI feature, Stoic says it sends the current journal entry to OpenAI. It says the entry may be retained for up to 30 days and is not used for training.
Does Reflectly document on-device AI?
The public Reflectly privacy policy we found does not document an on-device AI guarantee. Because its published policy appears old, check the current app and policy before relying on any claim about where new AI features run.
How does Daily Vibe keep reflections grounded?
It uses bounded mood and energy labels, checks displayed excerpts against source entries, and computes numeric trends in code. Relevance can still be imperfect, so results are prompts for reflection rather than diagnoses.