Comparison

SendMan vs 0Day

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

Head to head
About

SendMan

This tool allows developers to build, test, and monitor APIs from any location. Organize requests, save collections, and debug efficiently by comparing responses and inspecting payloads.

Highlights
  • Build and test APIs
  • Monitor API performance
  • Organize requests and collections
  • Switch between environments
  • Run requests in sequence
  • Compare responses
  • Inspect headers and payloads
Features
Read full description

SendMan is a full-featured API client for iPhone and iPad — build, send, and test HTTP requests anywhere, without opening your laptop. Debug a REST endpoint on the train, test a GraphQL query between meetings, or inspect a live WebSocket: SendMan puts a complete API testing toolkit in your pocket. Built natively for iOS, it's fast, works offline, and is made for developers, QA engineers, and mobile teams who need real API tooling on the go. BUILD & SEND REQUESTS - Full HTTP request builder — GET, POST, PUT, PATCH, DELETE & more - Add headers, query params, and request bodies in seconds - Reuse {{environment}} variables across URL, headers, params & body - Write tests and validate responses automatically - Generate ready-to-use code from any request ORGANIZE YOUR WORK - Save and group requests into Collections - Switch between multiple Environments and configurations - Full request History with status codes and response times - Instant search across everything GO BEYOND REST - GraphQL — run queries, mutations, and subscriptions - WebSocket — test real-time connections live - Traffic Capture — intercept and inspect HTTP/HTTPS traffic in real time - Monitor — run requests on a schedule and watch performance DEVELOPER TOOLS - Mock Data — auto-generate realistic JSON to test your APIs - JSON Diff — compare two responses and spot every change instantly - Dashboard with success, failure, and average response-time metrics - Response insights, charts, and performance tracking FULL REQUEST CONTROL - Fine-tune timeouts, max response size, and HTTP version - Toggle SSL certificate verification for self-signed certs - SSL/TLS key logging for deep debugging - Light & dark themes plus custom color palettes PRIVATE BY DESIGN Your requests, history, and data stay on your device. SendMan works offline and never sits between you and your APIs. Privacy Policy: https://sendman.netlify.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

0Day

Receive immediate alerts for zero-day vulnerabilities, supply chain attacks, and compromised packages relevant to your specific technology stack. Get early warnings before they hit the news cycle, enabling proactive security measures.

Highlights
  • Zero-day vulnerability alerts
  • Supply chain attack notifications
  • Compromised package warnings
  • Stack-aware filtering
  • Early warning system
  • Push notifications
  • Full alert archive
Features
Read full description

Most security feeds bury you in CVEs that have nothing to do with what you ship. 0Day cuts through that. Zero-days, supply chain attacks, compromised packages, active exploits: filtered to your exact stack, the moment they break. Pick your stack once during onboarding: npm, PyPI, Docker, Kubernetes, React, Rails, OpenSSL, whatever you use and the feed shows you only what touches your tech. No noise. No irrelevant advisories. Just what matters to you. The goal is lead time. Know about a compromised package, a poisoned build pipeline, or an actively exploited CVE before it reaches your CI, your production deployment, or your customers. Before the news cycle. Before the stragglers patch. Before you're the one scrambling at 2am. WHY 0DAY - Privacy-first — no analytics, no tracking, no third-party SDKs - Early warnings before the news cycle — the moment a threat breaks, you know - Stack-aware filtering — see only threats that hit the tools you use - Multi-source corroboration — duplicates merged, sources ranked by tier - Curated, not firehose — every alert is tied to a specific component - Full archive — searchable history of every threat that hit your stack HOW IT WORKS Every item in the feed goes through a three-stage lifecycle so you can tell the difference between "we're watching this" and "this is real, act now": CANDIDATE — A single source has reported an incident. In the pipeline, being correlated, not yet corroborated. EARLY WARNING — Either an authoritative research outlet flagged it, or a second independent source has confirmed the same incident. Pushed to your device immediately — this is the lead time the product is built for. CONFIRMED — Two or more authoritative sources agree, or three independent sources total. High-confidence state you can act on without double-checking. INSIDE THE FEED Each alert gives you a plain-English summary, affected components with version ranges, recommended action, CVE and GHSA identifiers with tappable links to the upstream advisories, and a timeline of when each source reported the incident. PRIVACY We collect only what we need to run the service: your email for sign-in, your stack selections, your notification preferences, and your device token for push delivery. No analytics. No crash reporting SDKs. No advertising identifiers. No cross-app tracking. All data is stored in the European Union on AWS infrastructure. You can delete your account and all associated data instantly from Settings. SUBSCRIPTION 0Day Pro unlocks the full experience: early warning alerts, push notifications, full archive access, remediation guidance, and stack filtering. All new users get a free 14-day trial — no payment required to get started. After the trial, subscribe to keep full access. Offered as a monthly or annual subscription. Payment is charged to your Apple ID at confirmation of purchase. Subscription auto-renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in iOS Settings → Apple ID → Subscriptions. Terms of Use: https://0day.lous.nl/terms Privacy Policy: https://0day.lous.nl/privacy

Screenshots

SendMan4 screens
0Day4 screens

Verdict

The call

The clearest difference is update cadence: 0Day at every 5 days against SendMan's every 2 weeks. 0Day also leads on chart position (#193 vs unranked). SendMan's advantage is monetization model (ad-supported vs freemium) and device support (4 vs 1). On price, rating, review sentiment and ratings volume 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. SendMan sells 2 in-app purchases, starting at $1.99 per month and 0Day sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for SendMan against 5.0 for 0Day. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

SendMan ships an update every 2 weeks, 0Day every 5 days. Both last shipped on October 3, 2026.

Scorecard5 real differences · 6 level
SendMan versus 0Day: the parameters behind the verdict, then further details
ParameterSendMan0Day
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationAd-supported — betterFreemium
Best chart rank—#193 — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS13.0 — better18.0
Further details — not scored
Size61 MB10 MB
Age rating12+4+
DeveloperMohammad Imran MiaRichard Lous

Customer experience

SendMan

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

0Day

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

SendMan

Subscriptions2
  • Remove Ads (Monthly)$1.991 Month
  • Remove Ads (Yearly)$9.991 Year
2 purchases

0Day

Subscriptions2
  • 0Day Pro7 Days trial$3.991 Month
  • 0Day Pro1 Month trial$29.991 Year

Questions

Is SendMan free?
SendMan is free to download, with in-app purchases available.
Is 0Day free?
0Day is free to download, with in-app purchases available.
Which has better reviews, SendMan or 0Day?
SendMan and 0Day are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do SendMan or 0Day have ads?
Neither SendMan nor 0Day shows ads.
Which is updated more often, SendMan or 0Day?
SendMan ships an update every 2 weeks, and 0Day every 5 days. Most recently, SendMan was updated on October 3, 2026 and 0Day on October 3, 2026.

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