Bo AI vs Noah AI vs Tomo

Verdict

Notis aside, Noah AI has the highest support score, 34% across 32 checked rows out of 33. Bo AI scores 28% across 32 checked rows out of 33 and Tomo scores 24% across all 33 rows.

Their strengths differ: Noah AI for remembering context between conversations, Bo AI for scheduled and event-triggered work and Tomo for reaching it from the apps you already message in.

None of them documents Bring your own API key, Open source or Run it on your own server.

Only Notis documents Telegram, Runs on your own Claude plan, Runs on your own ChatGPT plan and 8 more rows.

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Capabilities and pricing

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Capability comparison between Notis and the selected assistants
Capability	View pricing	Bo AIVisit site	Noah AIVisit site	TomoVisit site
Where you can use it
WhatsApp		—Not offered; SMS/iMessage only		—
iMessage		iMessage thread via Bo's number
Telegram		—Not offered; SMS/iMessage only	—Not in FAQ or terms channel lists	—Not offered
Slack		—Not offered; SMS/iMessage only		—Not offered
Email		—No inbox address; email is marketing	CC or write to Noah's own address	—
SMS or a phone number	PartialInbound calls only, no SMS	Vendor service number, SMS/MMS
Voice messages	Voice notes + live calls			—Voice messages not documented
Web or desktop app	Web, desktop and Home Screen app	PartialWeb dashboard; no browser chat	Partial	Partial
Its own iPhone or Android app	Home Screen app on iPhone	iPhone app (Bo Labs); M1 Mac compatible	—"No app to download"; no store listing
Bring your own AI
Runs on your own Claude plan		—Vendor calls Claude API; no plan login	—No sign-in with a Claude plan	—Own subscription; no Claude-plan sign-in
Runs on your own ChatGPT plan		—Anthropic only; no ChatGPT sign-in	—No sign-in with a ChatGPT plan	—
Bring your own API key	—	—Subscription resells model usage	—Flat $49/month, model usage included	—No API-key option
Works inside your own coding agent		—No MCP server, API or docs published	—No MCP server or developer docs	—
You choose which model runs your work		—Single provider (Anthropic Claude API)	—One undisclosed third-party LLM stack	—
What it can do
Ready-made app integrations	1,000+ apps	—No directory; ~25 homepage logos	Partial9 named in FAQ; full list login-gated	—
Creates and edits documents		—Chat-only outputs; no doc writing	—Docs/Drive are referenced, not authored	—
Save your own reusable instructions		—'Skills Library' = Bo's own catalogue	—No saved instruction sets documented	—
Browses the web for you		—Google search only; no page actions	—No web browsing; errands go by phone	Partial
Posts to social media for you		—No posting action documented	—	—Not documented
Joins and records your meetings	—	—Pre-call texts only; no bot/recorder	Not checked	—Not documented
Memory
Remembers you between conversations		Learns habits/goals across chats
Reads your existing files and apps	Notion, Gmail, Drive, Granola, web	Apple Health, Oura, calendars, more
Runs without you
Runs on a schedule or a trigger		Scheduled daily briefs and summaries	Partial	Partial
Reminds and nudges you		Timed reminders by text, one-off/daily		Reminders and proactive nudges by text
Computers it can use
Gives it a cloud computer of its own		—Hosted chat backend; nothing installable	—	—No persistent machine documented
Controls your own computer	Shell and apps, via the desktop app	—Companion app only; no local agent	—Nothing runs on your machine	—No local agent or desktop component
Connects to MCP servers on your computer		—MCP not mentioned anywhere	—No local agent; MCP not mentioned	—MCP never mentioned
Trust & control
Open source	—	—Closed source; ToS bars extraction	—Closed; proprietary IP clause	—Closed source; no repository linked
Run it on your own server	—	—Cloud-only SMS-native service	—Hosted only via heynoah.io	—Hosted subscription only
Says it will not train on your data	Covers Notis and its LLM providers	PartialProvider: no training; Bo: anonymised	—Not stated (checked 2026-09-02)	Partial
Published security certification	PartialSub-processors certified; Notis is not	—Self-written claims; not HIPAA covered	—	—
Plans & support
Free plan does the product's main job	Partial	Not checked	—Paid only: $49/month, invitation-gated	—No free tier; base plan $19.99/mo
Shared team workspace		—Personal, non-commercial licence only	Partial	—
Price	FREEPRO$13/moyr (rate on a yearly commitment)+2 more	Waitlist	Early adopter$49/mo	Tomo Pro (base plan)$19.99/mo

IncludedPartial— Not documentedNot checked

Ranked by support score

1. Notis

Personal AI assistant

Notis is a personal AI assistant you message from WhatsApp, iMessage, Telegram, Slack or email, and reach from your own coding agent through its MCP server.

Best for: running long jobs on a machine of its own

Documented strengths

Where you can use it: WhatsApp, iMessage, Telegram, Slack, Email, Voice messages, Web or desktop app and Its own iPhone or Android app
What it can do: Ready-made app integrations, Creates and edits documents, Save your own reusable instructions, Browses the web for you and Posts to social media for you
Bring your own AI: Runs on your own Claude plan, Runs on your own ChatGPT plan, Works inside your own coding agent and You choose which model runs your work

The catch

The gap is published guarantees about your data, with nothing documented for Open source and Run it on your own server.

Pricing

FREEPRO$13/moyrPRO+$39/moyrULTRA$99/moyr

Free–$149/mo · help.notis.ai

See Notis pricingSupport score: 83% across all 33 rows

2. Noah AI

AI executive assistant (scheduling and follow-ups)

An AI executive assistant you text over SMS, WhatsApp, iMessage, Slack or email to schedule meetings, send emails, set reminders and make phone calls for you.

Best for: remembering context between conversations

Documented strengths

Where you can use it: WhatsApp, iMessage, Slack, Email, SMS or a phone number and Voice messages
Memory: Remembers you between conversations and Reads your existing files and apps
Runs without you: Reminds and nudges you

The catch

The gap is published guarantees about your data, with nothing documented for Open source, Run it on your own server, Says it will not train on your data and Published security certification.

Pricing

Early adopter$49/mo

$49/month · no free tier · heynoah.io

How it differs from Notis: Noah is a narrow executive-admin assistant (calendar, email threads you CC it on, reminders, phone calls) on one undisclosed model stack; Notis adds Telegram and a voice channel, lets you choose the model and bring your own subscription or key, and runs a far broader tool and automation layer.

Visit Noah AI Noah AI alternativesSupport score: 34% across 32 checked rows out of 33

3. Bo AI

iMessage/SMS AI personal assistant

A text-first AI personal assistant that runs your day over iMessage and SMS, with a strong health, nutrition and habit-tracking bent.

Best for: scheduled and event-triggered work

Documented strengths

Where you can use it: iMessage, SMS or a phone number, Voice messages and Its own iPhone or Android app
Memory: Remembers you between conversations and Reads your existing files and apps
Runs without you: Runs on a schedule or a trigger and Reminds and nudges you

The catch

The gap is messaging channels, with nothing documented for WhatsApp, Telegram, Slack and Email.

Pricing

Waitlist

Early access · getbo.com

How it differs from Notis: Bo is a consumer health-and-habits coach on iMessage/SMS that runs on one fixed model provider; Notis is a multi-channel work assistant with an execution layer across model providers and business integrations.

Visit Bo AI Bo AI alternativesSupport score: 28% across 32 checked rows out of 33

4. Tomo

Personal AI assistant you text (iMessage/SMS)

A personal AI that lives in your texts, learns your goals, holds you accountable, and manages your calendar, email and reminders.

Best for: reaching it from the apps you already message in

Documented strengths

Where you can use it: iMessage, SMS or a phone number and Its own iPhone or Android app
Memory: Remembers you between conversations and Reads your existing files and apps
Runs without you: Reminds and nudges you

The catch

The gap is messaging channels, with nothing documented for WhatsApp, Telegram, Slack, Email and Voice messages.

Pricing

Tomo Pro (base plan)$19.99/mo

From $19.99/mo (App Store: Tomo Pro $19.99 in-app purchase, also a $119.99 Tomo Pro option); higher messaging-limit plans not publicly priced · no free tier · tomo.ai

How it differs from Notis: Tomo is a consumer accountability coach you reach by texting a vendor number over iMessage or SMS (plus an iOS app), with no model choice, no published integrations directory, API or automation builder. Notis spans WhatsApp, iMessage, Telegram, Slack, email and voice with an execution layer across model providers.

Visit Tomo Tomo alternativesSupport score: 24% across all 33 rows

Questions about this comparison

Which of Noah AI, Bo AI or Tomo scores highest in the evidence checked so far?

Noah AI, with 34% across 32 checked rows out of 33. Bo AI scores 28% across 32 checked rows out of 33 and Tomo scores 24% across all 33 rows.

How much do they cost?

Noah AI: $49/month; Bo AI: Early access; Tomo: From $19.99/mo (App Store: Tomo Pro $19.99 in-app purchase, also a $119.99 Tomo Pro option); higher messaging-limit plans not publicly priced. These prices are not directly comparable, so we do not rank them.

Which of them can I try for free?

Noah AI and Tomo do not have one and free-tier availability is not checked yet for Bo AI.

Which of them work in Voice messages?

Noah AI and Bo AI do. Tomo does not.

What can none of them do?

None of them documents Bring your own API key, Open source or Run it on your own server.

Where does Notis fit in?

Notis is number 1 on this page. Against Noah AI: Noah is a narrow executive-admin assistant (calendar, email threads you CC it on, reminders, phone calls) on one undisclosed model stack; Notis adds Telegram and a voice channel, lets you choose the model and bring your own subscription or key, and runs a far broader tool and automation layer.

How we checked

We checked each product's official pages against the same 33 capability rows. The support score is the share of checked rows a product documents. Partial support counts half, and rows not checked yet stay out of the score. Notis chose the rows and is scored the same way. The score does not measure reliability, reply speed or writing quality. Last checked 21 August 2026.

Sources

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