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Productivity · head to head

Spark Mail vs Streaks

Spark Mail logo

Spark Mail

Productivity

AI-assisted email client from Readdle with a Smart Inbox and team collaboration features

From
Free
Rated
-
Full reviewWebsite
Streaks logo

Streaks

Productivity

iOS habit tracker sold as a one-time purchase, not a subscription

From
$5.99/one-time
Rated
-
Full reviewWebsite

The short version

  • Only Spark Mail has a free tier, so it costs nothing to try first.
  • Each has a real cost: Spark Mail several sync features route mail metadata and, for some features, credentials through Readdle servers, which is a materially different trust model from a local-only IMAP client.; Streaks it is iOS and Apple Watch only, with no Android version, so it is not usable for anyone outside Apple's ecosystem.
  • They diverge on capability: Spark Mail covers Smart Inbox, Streaks covers Streak tracking.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Spark Mail and Streaks actually diverge.

Attributes where Spark Mail and Streaks differ
AttributeSpark MailStreaks
Starting priceFree$5.99/one-time
Pricing modelPer user per monthOne-time purchase
Free tierYesNo
PlatformsmacOS, Windows, iOS, Android, WebiOS

Identical on both: user rating (Not yet rated), category (Productivity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Spark Mail

  • Smart Inbox
  • AI Copilot
  • AI Summaries
  • Team collaboration
  • Send later and snooze
  • Multi-account unified inbox

Only in Streaks

  • Streak tracking
  • Apple Health integration
  • Apple Watch app
  • Flexible scheduling
  • Widgets
  • iCloud sync

What people use each for

The jobs each tool is most often brought in to do.

Spark Mail

  • A freelancer juggling Gmail and Outlook accounts who wants one AI-assisted inboxnot Streaks
  • A small support team sharing a single inbox with internal notes before replyingnot Streaks
  • Someone who wants drafts and summaries generated without switching to a new mail hostnot Streaks
  • A user who wants notification triage without writing their own filtersnot Streaks

Streaks

  • Someone wanting a simple visual habit tracker without recurring subscription feesnot Spark Mail
  • A person wanting habits like step count or sleep to auto-complete via Apple Health datanot Spark Mail
  • An Apple Watch user wanting to log habits without pulling out a phonenot Spark Mail
  • Someone tracking a mix of daily and weekly recurring to-dos in one placenot Spark Mail

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Spark Mail

  • Several sync features route mail metadata and, for some features, credentials through Readdle servers, which is a materially different trust model from a local-only IMAP client.
  • It is a client over accounts you still pay for elsewhere, so the total cost is Spark plus whatever Gmail, Outlook or Fastmail plan you already hold.
  • The free tier lacks AI Copilot and summaries, so the features it is best known for sit behind the paid plan.
  • Team features are basic next to dedicated shared-inbox tools like Front or Help Scout, so a support team scaling past a few agents will likely outgrow it.
  • Windows and Android versions have historically lagged the macOS and iOS apps in feature parity.

Streaks

  • It is iOS and Apple Watch only, with no Android version, so it is not usable for anyone outside Apple's ecosystem.
  • The base app caps at 24 tracked habits, which is enough for most users but a real limit for anyone wanting to track a larger number of items.
  • Sync is via iCloud only, so there is no web or cross-platform account, which limits use to Apple devices exclusively.
  • It has fewer social or accountability features, such as shared habit tracking with friends, compared with some subscription-based competitors.
  • A single lifetime purchase means no ongoing development revenue tied to the individual user, so it depends on new sales and occasional priced major updates rather than recurring income to fund development.

Pricing, plan by plan

Spark Mail

Free
  • BasicFree
    • Unlimited accounts
    • Smart Inbox
    • Basic send later
  • Premium$7.99/month
    • AI Copilot and summaries
    • Unlimited snooze and send later
    • Priority support
  • Premium Teams$10/month
    • Shared inboxes
    • Delegation and internal comments
    • Admin controls

Streaks

$5.99/one-time
  • Streaks$5.99/one-time
    • Full app, no subscription
    • Up to 24 tracked habits
    • Apple Watch app included

Which should you pick?

Choose Spark Mail if

  • You need smart inbox.
  • You want to start without paying.
  • You work on macOS, Windows, iOS, Android, Web.
  • You also want ai copilot.
Spark Mail review

Choose Streaks if

  • You need streak tracking.
  • You work on iOS.
  • You also want apple health integration.
Streaks review

Questions people ask

Is Spark Mail or Streaks better?
Neither clearly leads. Spark Mail starts at Free and Streaks at $5.99/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Spark Mail or Streaks?
Spark Mail has a free tier; the other does not. Paid plans start at Free for Spark Mail and $5.99/one-time for Streaks.
Does Spark Mail or Streaks run on more platforms?
Spark Mail runs on macOS, Windows, iOS, Android, Web. Streaks runs on iOS.
Can I use Spark Mail for free?
Yes. Spark Mail has a free tier, so you can try it without paying. Streaks starts at $5.99/one-time.
What is Spark Mail best used for?
Spark Mail is most often used for a freelancer juggling gmail and outlook accounts who wants one ai-assisted inbox, a small support team sharing a single inbox with internal notes before replying, someone who wants drafts and summaries generated without switching to a new mail host, a user who wants notification triage without writing their own filters. Of those, a freelancer juggling gmail and outlook accounts who wants one ai-assisted inbox and a small support team sharing a single inbox with internal notes before replying are not what Streaks is typically brought in for.
What can Spark Mail do that Streaks cannot?
Spark Mail covers Smart Inbox, AI Copilot, AI Summaries, Team collaboration. Streaks covers Streak tracking, Apple Health integration, Apple Watch app, Flexible scheduling.

Answered from the vendors’ own pages

Spark Mail: Does Spark host my email?

No. It is a client that connects to Gmail, Outlook, iCloud or any IMAP account; you still need a mail host.

Streaks: Is Streaks a subscription?

No, it is a one-time App Store purchase, currently priced around 5.99 USD, with no recurring fee.

Spark Mail: Does Spark store my email credentials on its servers?

For some features, including cross-device snooze and send-later sync, yes. It is part of how those features stay consistent across devices.

Streaks: Does it work on Android?

No, it is iOS and Apple Watch only.

Spark Mail: Is there a one-time purchase option?

No, Spark is subscription only for individuals and teams; the base client is free but AI and unlimited scheduling need Premium.

Streaks: Does it integrate with Apple Health?

Yes, habits tied to metrics like steps or sleep can auto-complete based on Apple Health data.

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