Comparison

Specs vs Atto

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

Head to head
About

Specs

Gain in-depth, real-time insights into your Apple devices' hardware. Monitor CPU, RAM, storage, network activity, and battery health with a comprehensive system dashboard. Access information instantly through home screen widgets and macOS integrations.

Highlights
  • Real-time CPU, RAM, and Disk monitoring
  • Network activity insights (IP, speeds, data usage)
  • Full device hardware specifications
  • Battery health information
  • iOS Home Screen and Dock widgets
  • macOS menu bar and desktop integration
Features
Read full description

Experience the ultimate system dashboard for your Apple ecosystem. Specs delivers a deep, real-time look at your iPhone, iPad, and Mac hardware in one beautifully designed app. Whether you are a power user, developer, IT professional, or simply curious about what powers your device, Specs turns raw system data into clear, actionable insights you can check at a glance. KEY FEATURES - Real-Time Monitoring: Track CPU load, RAM usage, and available storage the moment they change. - Battery Health: View capacity, cycle count, charging status, temperature, and voltage. - Network Insights: See local and public IP addresses, Wi-Fi details, carrier info, upload and download speeds, plus cellular data usage. - Device Identity: Full hardware profile including model, chip, GPU cores, screen resolution, refresh rate, and serial details. - Storage Breakdown: Understand how your space is used across system, apps, media, and free capacity. - Sensors and Hardware: Motion, proximity, barometer, magnetometer, and more, all in one place. - System Report: iOS or macOS version, uptime, kernel, boot time, and jailbreak status detection. HOME AND LOCK SCREEN WIDGETS - Pin CPU, RAM, storage, battery, or network stats directly on your Home Screen. - Compact, medium, and large widget sizes for every layout. - Lock Screen widgets so critical stats are always one glance away. - StandBy mode support on iPhone for a live desktop-style dashboard. MAC AND IPAD READY - Native experience on iPhone, iPad, and Apple Silicon Mac. - Menu bar friendly layout on Mac with quick access to live metrics. - Multitasking and Stage Manager optimized on iPadOS. PRIVACY FIRST - No account required, no tracking, no ads. - All measurements happen on device. Your data never leaves your iPhone, iPad, or Mac. BEAUTIFUL DESIGN - Clean typography, smooth animations, and full Dark Mode support. - Dynamic Island and Live Activities show live stats without opening the app. - Localized, accessible, and optimized for VoiceOver. WHO IT IS FOR - Developers verifying device specs, memory pressure, and network throughput. - IT and support teams collecting device details in seconds. - Gamers and creators monitoring thermals, performance, and storage headroom. - Everyday users who want to know exactly what their device is doing right now. Upgrade to Specs Pro to unlock advanced widgets, extended history graphs, export to CSV, and priority feature requests. A one-time purchase and optional subscription are available. Download Specs today and turn your iPhone, iPad, or Mac into a transparent, powerful system dashboard you will actually enjoy checking.

About

Atto

This utility app precisely measures and displays server clock times for time-sensitive events like ticket drops. It offers advanced features to correct for device drift and ensure accurate countdowns, even while using other applications.

Highlights
  • Server clock synchronization
  • Millisecond precision countdown
  • Device drift correction
  • Picture-in-Picture mode
  • Haptic and sound alerts
  • Practice mode for timing
  • Supports over 300 time sources
Features
Read full description

A ticket drop is decided in milliseconds, not seconds. The queue opens on the booking server's clock, not your phone's. The two are usually tens to hundreds of milliseconds apart, and that gap decides your place in line. Atto reads the server's clock directly, and shows you how well it read it. Measuring server time An HTTP Date header only resolves to the second, so one read tells you ±500ms and no more. Atto probes at 137ms intervals so each request lands on a different phase inside the second. Once the offset narrows, it predicts when the server's second will roll over and aims at that edge. Twenty overlapping measurements fold the error down to the round trip. The error bar stays visible Instead of a label like "high accuracy" you get the measured figure: ±23ms. Sample count, rejected samples, best round trip, and how far this server runs from national standard time are all on screen. Cached responses get dropped When a CDN answers instead of the origin, the clock inside that response is frozen at the moment it was stored. Atto checks the Age and cache headers and keeps those responses out of the average. Device drift correction Your phone's oscillator runs seconds off per day. Atto measures the slope between syncs, extrapolates it to now, and re-syncs every two minutes while you wait. Picture in Picture Press Start and a Picture in Picture window floats above your other apps. Show a decreasing countdown or a corrected wall clock that advances toward your configured target, with three-digit milliseconds. Keep the timing in sight while using a booking app or webpage. Haptics and sound Taps begin at the lead time you set and end with one hard hit at zero. The whole pattern goes to Core Haptics up front rather than a timer, so zero does not move even if the screen stutters. Sound is optional and plays through the silent switch. Practice mode A recommended lead time is somebody else's number. Measure the gap between the buzz and your tap actually registering, then apply your own median. Time sources Over 300 sources across 14 regions, including Ticketmaster, AXS, StubHub, Interpark, e+, tixCraft and Damai, plus course registration sites and sneaker drops. Standard-time servers like NIST, NPL, PTB, NICT and KRISS are there too, and you can type any address yourself. Free and paid Everything that decides whether you get the ticket is free: full sync accuracy, drift correction, the on-screen countdown, haptics, every time source, practice mode. One rewarded ad floats a single countdown in a PiP window. A one-time purchase removes ads and keeps PiP unlocked. It is not a subscription. Reading a clock takes one HEAD request. Atto never asks for an account and takes no part in the booking itself. English, 한국어, 日本語

Screenshots

Specs4 screens
Atto4 screens

Verdict

The call

The clearest difference is price: Atto at Free against Specs's $2.99. Atto also leads on update cadence (every 4 days vs every 2 months) and iOS requirement (17.0 vs 26.0). Specs's advantage is in-app purchases (none vs 1) and ads (none vs shown). On review sentiment 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

Atto is free to download; Specs costs $2.99 up front. Atto sells 1 one-off in-app purchase. Specs asks for nothing beyond the download.

UpkeepUpdate frequency

Specs ships an update every 2 months, Atto every 4 days. Both last shipped on October 25, 2026.

Scorecard7 real differences · 3 level
Specs versus Atto: the parameters behind the verdict, then further details
ParameterSpecsAtto
Price$2.99Free — better
Rating4.4 (10 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings10 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size25 MB11 MB
Age rating4+4+
DeveloperCrioSoft LLCBeomjin In

Customer experience

Specs

All ratings9 ratings
Positive77.8%
Neutral11.1%
Negative11.1%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Atto

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Specs

No in-app purchases

1 purchases

Atto

One-time1
  • Atto Pro$1.99

Questions

Is Specs free?
Specs costs $2.99, with no in-app purchases.
Is Atto free?
Atto is free to download, with in-app purchases available.
Do Specs or Atto have ads?
Atto shows ads; Specs does not.
Which is updated more often, Specs or Atto?
Specs ships an update every 2 months, and Atto every 4 days. Most recently, Specs was updated on October 25, 2026 and Atto on October 25, 2026.

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