Comparison

black.com vs Kuil

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

black.com

Secure and encrypted email with a personalized @black.com address. Features AI writing tools for effortless composition, unlimited storage, and alias addresses to manage spam. Protects your data with zero-access encryption and app-based two-factor authentication.

Highlights
  • Personalized @black.com email address
  • Zero-access encryption
  • AI-powered email composition
  • Unlimited storage (25GB + annual increase)
  • Spam-free alias addresses
  • App-based two-factor authentication
Features
Read full description

@black.com email address An email address is a reflection of your personal brand. Stand out with your own @black.com address that low-budget alternatives simply can't match. Secure & encrypted email Zero-Access Encryption secures your data with a key derived from your password. This means that not even we can access the contents of your stored emails. Our app-based two-factor authentication protects your account even if your password is compromised. Write emails effortlessly Supercharge your email experience with our integrated AI tools. Let the AI create, correct, optimize, and translate your messages. Unlock a whole new level of productivity and compose polished emails in a few seconds! Completely optional, of course. Unlimited* storage You start with 25 GB and get 2 GB of additional storage every year - forever. With normal usage, you will never run out of space. Alias addresses for a spam-free inbox Memorable and removable alias addresses like redcat42@black.com that you can use for newsletters etc. keep your inbox spam-free - forever. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

Kuil

Features
Read full description

Kuil is the LinkedIn growth tool built for iOS. Write posts that sound exactly like you, not like AI. Kuil learns your voice, your tone, and your style, then helps you create content that gets real engagement. → Daily Spark: Fresh post ideas every day, personalized to your niche → Voice DNA: Kuil captures how you write and keeps it consistent → Hook Score: See your post's engagement potential before you publish → Visibility Insights: Know the best time to post and what's working → LinkedIn Preview: See exactly how your post looks before it goes live Built for anyone who wants to grow on LinkedIn without spending hours writing. No browser. No web app. Just your phone. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kuil.ai/privacy Terms of Use: https://www.kuil.ai/cgu

Screenshots

black.com4 screens
Kuil4 screens

Verdict

The call

The clearest difference is update cadence: Kuil at every 2 weeks against black.com's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. black.com sells 1 in-app purchase, starting at $4.99 per month and Kuil sells 8 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

black.com ships an update every 6 weeks, Kuil every 2 weeks. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 9 level
black.com versus Kuil: the parameters behind the verdict, then further details
Parameterblack.comKuil
PriceFreeFree
Rating3.6 (9 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings9 — better—
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size14 MB10 MB
Age rating4+4+
Developerblack.com GmbHAziz Mallek

In-app purchases

1 purchases

black.com

Subscriptions1
  • Membership$4.991 Month
8 purchases

Kuil

Subscriptions8
  • Kuil Pro7 Days trial$4.997 Days
  • Pro Weekly7 Days trial$5.997 Days
  • Pro Monthly$9.991 Month
Show 5 more
  • Kuil Pro$19.991 Month
  • Power Monthly$19.991 Month
  • Pro Yearly7 Days trial$69.991 Year
  • Kuil Pro$99.991 Year
  • Power Yearly$149.991 Year

Questions

Is black.com free?
black.com is free to download, with in-app purchases available.
Is Kuil free?
Kuil is free to download, with in-app purchases available.
Do black.com or Kuil have ads?
Neither black.com nor Kuil shows ads.
Which is updated more often, black.com or Kuil?
black.com ships an update every 6 weeks, and Kuil every 2 weeks. Most recently, black.com was updated on October 3, 2026 and Kuil on September 30, 2026.

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