BlackBook vs Cloze at a glance
| BlackBook | Cloze | |
|---|---|---|
| Approach | iPhone-native personal CRM focused on follow-through and privacy | AI-powered CRM, inbox and contacts that auto-logs email, calls and meetings; its site leads with real-estate brokerages |
| Platforms | iPhone (iOS 17.6+) | iPhone, iPad, web |
| Account required | No | Yes |
| Where data lives | On your iPhone + your private iCloud | Cloze’s service; Cloze pledges not to sell your information |
| Pricing | Free plan (25 people); optional Pro subscription | Free plan (contacts + email inbox); Cloze Pro and Business subscriptions, see their site |
Sources (checked October 20, 2026): cloze.com, Cloze’s App Store listing (checked October 15, 2026). Competitor details change; check their site for current information. Full disclosure: we make BlackBook.
When BlackBook is the better fit
- You’re a realtor, advisor, recruiter or founder who wants to remember clients and referral partners without connecting your inbox.
- You want a short list of the people who matter, not every address you’ve ever emailed.
- You want no account and your notes on your own device and private iCloud.
- You want Pulse to suggest your next follow-up and, with Pro on iOS 26, on-device AI follow-up drafts.
When Cloze may suit you better
If you want email, calls and meetings logged automatically, marketing tools, or a platform for a whole brokerage team, Cloze is built for that.
BlackBook facts
- Platform: iPhone, iOS 17.6 or later
- Price: free download; optional BlackBook Pro subscription (prices shown in the app)
- Free plan: 25 people, 2 notes per person, 30 days of interaction history
- Pro: unlimited people and full history, VIP reminders and insights, relationship notes with tags, duplicate detection, BlackBook AI
- AI: on-device via Apple Intelligence (Pro, iOS 26, compatible iPhone)
- Privacy: data on your device and private iCloud, no account, no ad SDKs, data never sold
- Developer: Preston Earnest / Earnestly Studios LLC
Frequently asked questions
Is BlackBook a good Cloze alternative?
For individuals who want a simple, private personal CRM on iPhone, yes. BlackBook needs no account, doesn’t connect to your inbox, keeps data on your device and private iCloud, and is free to start with 25 people.
Does BlackBook sync my email like Cloze?
No. BlackBook doesn’t read your inbox. You log calls, messages, meetings and coffee chats yourself, or dictate a recap with BlackBook AI (Pro, iOS 26, compatible iPhone).
Is BlackBook good for real estate agents?
BlackBook is built for people whose business is personal, including realtors: keep notes on clients and referral partners, get birthday and follow-up reminders, and let Pulse suggest who to contact next. It is not a team or brokerage platform.
Is BlackBook free?
BlackBook is free to download with a free plan of 25 people, two notes per person and 30 days of history. BlackBook Pro is an optional subscription.
Keep your promises.
BlackBook is free to download for iPhone (iOS 17.6+). Start with 25 people—no account needed.
Get BlackBook – Personal CRM