Comparison

Spam Zero vs Klo

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

Head to head
About

Spam Zero

Block unwanted spam calls with a vast database of known spammers. This privacy-focused app keeps all blocking data on your device, ensuring your calls and contacts remain private. Enjoy smart protection that distinguishes spam from important calls with an easy setup.

Highlights
  • Block 1M+ known spam numbers
  • Complete privacy, no data collection
  • Device-only call blocking
  • Smart protection for important calls
  • Automatic spam database updates
  • Real-time call blocking
  • Easy setup in minutes
Features
Read full description

Tired of endless spam calls? Spam Zero gives you back control of your phone with powerful, privacy-focused call blocking. KEY FEATURES: • Massive Database: Protection from 1,000,000+ known spam numbers • Complete Privacy: We never see your calls or contacts • Device-Only: All data stays securely on your iPhone • Zero Data Collection: We never track or upload your information • Smart Protection: Blocks spam while letting important calls through • Easy Setup: Get protected in minutes PRIVACY FIRST Your privacy is our foundation. Spam Zero is designed with a strict privacy-first approach: • No access to your personal calls or contacts • All blocking happens directly on your device • No data collection or tracking • No cloud storage of your information POWERFUL PROTECTION • Automatic updates to spam number database • Real-time call blocking • Visual status monitoring • Protection status tracking • Simple, intuitive interface GET STARTED Download Spam Zero today and join thousands of users who've taken back control of their phone calls. Setup takes just minutes, and you'll be protected immediately. SUPPORT Need help? Questions? Contact our support team at hey@getspamzero.com Note: Spam Zero requires iOS call blocking permissions to function. Follow the in-app setup guide to enable all features.

About

Klo

This app unifies Gmail accounts and Google Calendars into a native iOS experience. It offers a smart inbox, AI-powered focused mode for important messages, and hands-free voice commands for calendar management. Enjoy offline support, quick compose, and robust security features.

Highlights
  • Unified Gmail and Google Calendar
  • AI-powered Focused Mode
  • Voice commands for calendar
  • Offline email support
  • Smart inbox and quick compose
  • Swipe actions and conversation threading
Features
Read full description

Make something great. Klo brings your footage, your ideas, and your editing tools into one place. Start with a few clips. Describe the change you have in mind, or get hands-on with the timeline. Keep shaping it until it feels like you. EDIT IN YOUR OWN WORDS Type or talk to Klo while your footage stays in view. Give direction, hear a reply, and interrupt when you want to change course. Return to the timeline to refine the details. Save your preferred spellings for names and recurring words in Settings. FIND YOUR RHYTHM Trim and split clips, adjust their speed, and shape the sequence. Move between the big picture and the small details, with undo when you want to try another direction. MAKE IT FEEL LIKE YOU Explore color presets and adjust their intensity. Refine exposure and white balance on individual clips to bring the look together. GIVE IT ATMOSPHERE Browse and preview sounds before adding them. Bring in music, captions, and text to finish the story. START WITH YOUR FOOTAGE Import clips and begin editing while Klo prepares them. Keep your projects together and export your finished video when you’re ready to share it. Manual editing is free to use. AI features require a Klo account and use credits. New accounts receive 10 AI credits. Optional auto-renewable subscriptions are available through in-app purchase: Klo Pro includes 50 AI credits per month, banking up to 100; Klo Studio includes 300 AI credits per month, banking up to 600. Prices are shown in your local currency before purchase. Subscriptions renew monthly unless canceled in your Apple account settings. Restore Purchases and Manage subscription are available in Settings > Plans & purchases. Privacy Policy: https://getklo.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Spam Zero4 screens
Klo4 screens

Verdict

The call

The clearest difference is review sentiment: Klo at 100% against Spam Zero's 33%. Spam Zero's advantage is in-app purchases (none vs 2). On price, update cadence, ads and monetization model 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. Klo sells 2 in-app purchases, starting at $29.99 per month. Spam Zero asks for nothing beyond the download.

UpkeepUpdate frequency

Spam Zero ships an update every 3 days, Klo every 2 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
Spam Zero versus Klo: the parameters behind the verdict, then further details
ParameterSpam ZeroKlo
PriceFreeFree
Rating3.1 (18 ratings) — better—
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings18 — better—
Update frequencyEvery 3 daysEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.217.0 — better
Further details — not scored
Size12 MB54 MB
Age rating4+12+
DeveloperKavun, LLCKlorah

Customer experience

Spam Zero

All ratings7 ratings
Positive71.4%
Neutral14.3%
Negative14.3%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

Klo

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Spam Zero

No in-app purchases

2 purchases

Klo

Subscriptions2
  • Klo Pro$29.991 Month
  • Klo Studio$199.991 Month

Questions

Is Spam Zero free?
Spam Zero is free to download, with no in-app purchases.
Is Klo free?
Klo is free to download, with in-app purchases available.
Do Spam Zero or Klo have ads?
Neither Spam Zero nor Klo shows ads.
Which is updated more often, Spam Zero or Klo?
Spam Zero ships an update every 3 days, and Klo every 2 days. Most recently, Spam Zero was updated on October 27, 2026 and Klo on October 28, 2026.

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