April vs Bo AI vs Iris

Historical comparison. April is shut down or no longer current.

Verdict

Notis aside, April has the highest support score, 71% across 7 checked rows out of 33. Bo AI scores 28% across 32 checked rows out of 33 and Iris scores 15% across all 33 rows.

Their strengths differ: April for reaching it from the apps you already message in, Bo AI for remembering context between conversations and Iris for rolling a shared assistant out to a team.

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Capabilities and pricing

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Capability comparison between Notis and the selected assistants
Capability	View pricing	AprilVisit site	Bo AIVisit site	IrisVisit site
Where you can use it
WhatsApp		Not checked	—Not offered; SMS/iMessage only	—
iMessage		Not checked	iMessage thread via Bo's number	—
Telegram		Not checked	—Not offered; SMS/iMessage only	—
Slack		Not checked	—Not offered; SMS/iMessage only	—
Email		Not checked	—No inbox address; email is marketing	—
SMS or a phone number	PartialInbound calls only, no SMS	Not checked	Vendor service number, SMS/MMS	—
Voice messages	Voice notes + live calls
Web or desktop app	Web and desktop app	Not checked	PartialWeb dashboard; no browser chat	—
Its own iPhone or Android app	—		iPhone app (Bo Labs); M1 Mac compatible
Bring your own AI
Runs on your own Claude plan		Not checked	—Vendor calls Claude API; no plan login	—
Runs on your own ChatGPT plan		Not checked	—Anthropic only; no ChatGPT sign-in	—
Bring your own API key	—	Not checked	—Subscription resells model usage	—
Works inside your own coding agent		Not checked	—No MCP server, API or docs published	—
You choose which model runs your work		Not checked	—Single provider (Anthropic Claude API)	—
What it can do
Ready-made app integrations	1,000+ apps	Not checked	—No directory; ~25 homepage logos	—
Creates and edits documents		Not checked	—Chat-only outputs; no doc writing	—
Save your own reusable instructions		Not checked	—'Skills Library' = Bo's own catalogue	—
Browses the web for you		Not checked	—Google search only; no page actions	—
Posts to social media for you		Not checked	—No posting action documented	—
Joins and records your meetings	—	Not checked	—Pre-call texts only; no bot/recorder	—
Memory
Remembers you between conversations		Partial	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		Not checked	Scheduled daily briefs and summaries	—
Reminds and nudges you		Partial	Timed reminders by text, one-off/daily	—
Computers it can use
Gives it a cloud computer of its own	1h/mo (Pro) to uncapped (Ultra)	Not checked	—Hosted chat backend; nothing installable	—
Controls your own computer	Shell and apps, via the desktop app	Not checked	—Companion app only; no local agent	—
Connects to MCP servers on your computer		Not checked	—MCP not mentioned anywhere	—
Trust & control
Open source	—	Not checked	—Closed source; ToS bars extraction	—
Run it on your own server	—	Not checked	—Cloud-only SMS-native service	—
Says it will not train on your data	Covers Notis and its LLM providers	Partial	PartialProvider: no training; Bo: anonymised	Partial
Published security certification	PartialSub-processors certified; Notis is not	Partial	—Self-written claims; not HIPAA covered	Partial
Plans & support
Free plan does the product's main job	Partial	Not checked	Not checked
Shared team workspace		Not checked	—Personal, non-commercial licence only	—
Price	FREEPRO$13/moyr (rate on a yearly commitment)+2 more	Discontinued	Waitlist	Free

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 and Web or desktop 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 messaging channels, with nothing documented for Its own iPhone or Android app.

Pricing

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

Free–$149/mo · help.notis.ai

See Notis pricingSupport score: 80% across all 33 rows

2. April

Voice AI email and calendar assistant — discontinued

A discontinued iPhone voice assistant for Gmail and Google Calendar; April was sunset on 6 August 2026, although its App Store listing remains accessible.

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

Documented strengths

Where you can use it: Voice messages and Its own iPhone or Android app
Memory: Reads your existing files and apps

Pricing

Discontinued

Discontinued; no current subscription pricing verified. App Store download remains labelled Free. · apps.apple.com

How it differs from Notis: April is a historical reference and is unavailable to new buyers. Its surviving App Store listing does not establish an operating service.

April alternativesSupport score: 71% across 7 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: remembering context between conversations

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. Iris

AI calendar and inbox assistant app (iPhone)

An iPhone app that connects to Gmail, Google Calendar and Google Maps to reschedule your day, draft emails and summarize meeting context.

Best for: rolling a shared assistant out to a team

Documented strengths

Where you can use it: Voice messages and Its own iPhone or Android app
Memory: Reads your existing files and apps
Plans & support: Free plan does the product's main job

The catch

The gap is messaging channels, with nothing documented for WhatsApp, iMessage, Telegram, Slack, Email, SMS or a phone number and 1 more row.

Pricing

Free

Free · apps.apple.com

How it differs from Notis: Iris is a single iPhone app focused on Google Calendar and Gmail; Notis is a channel-first personal AI assistant reachable over WhatsApp, iMessage, Telegram, Slack, email and voice, with an execution layer across model providers.

Visit Iris Iris alternativesSupport score: 15% across all 33 rows

Questions about this comparison

Which of April, Bo AI or Iris scores highest in the evidence checked so far?

April, with 71% across 7 checked rows out of 33. Bo AI scores 28% across 32 checked rows out of 33 and Iris scores 15% across all 33 rows.

How much do they cost?

April: Discontinued; no current subscription pricing verified. App Store download remains labelled Free; Bo AI: Early access; Iris: Free. These prices are not directly comparable, so we do not rank them.

Which of them can I try for free?

Iris has a free tier and free-tier availability is not checked yet for April and Bo AI.

Which of them work in iMessage?

Bo AI does. Iris does not. April is not checked yet.

Where does Notis fit in?

Notis is number 1 on this page. Against April: April is a historical reference and is unavailable to new buyers. Its surviving App Store listing does not establish an operating service.

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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