Comparison

iodyne vs Circle ID

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

Head to head
About

iodyne

Manage and monitor your storage devices with this utility app. Unlock iodyne drives using passkeys and scan NFC tags for other devices. Track file transfers and view workflow metadata in real-time.

Highlights
  • Unlock iodyne drives with passkeys
  • Scan NFC tags for non-iodyne drives
  • View device provisioning metadata
  • Monitor file transfers in real-time
  • Manage workflow metadata
Read full description

iodyne Utility enables you to interact your with fleet of storage devices in the field. Unlock smart iodyne drives using passkeys with the tap of your phone. Scan smart NFC tags for non-iodyne drives. View device provisioning and workflow metadata from your iodyne Cloud projects. Keep tabs on in-progress file transfers and workflows with the real-time Watchlist. PASSKEYS and TAP-to-UNLOCK In place of insecure passwords, PIN codes, and keypads, iodyne Utility provides the industry’s first implementation of Passkeys for a portable storage drive. Just like a modern website, iodyne Utility allows multiple authorized users to establish personal and secure Passkeys that are stored in your phone’s Secure Enclave. Unlock your iodyne Pro Mini with a tap of your phone. SMART NFC STICKERS Label other storage devices in your fleet with iodyne’s smart NFC Sticker, securely linking each asset to your iodyne Cloud Projects and Devices inventory. Scan the sticker with a tap of your phone to look up device provisioning and Project workflow metadata. REAL-TIME WATCHLIST Add busy drives to a real-time Watchlist that relays live workflow progress from your iodyne device to your phone. Once your workflow is running, you can manage other tasks on-set while you receive real-time notifications if your task is complete or requires your attention. WORKFLOW METADATA iodyne Utility can view and store customized workflow metadata that can be retrieved with an NFC tap, or viewed when the utility connects to iodyne Cloud. Use Workflow Metadata to record times, dates, project codes, shipping locations, billing codes, and more.

About

Circle ID

This app replaces traditional passwords with secure, passwordless sign-in using passkeys. It offers one-tap credential filling and protects your information with biometric security, making logins faster and more secure.

Highlights
  • Passwordless sign-in with passkeys
  • One-tap AutoFill for credentials
  • Face ID biometric protection
  • Quick QR code setup
  • Strong on-device encryption
  • Cross-device login approval
Features
Read full description

Your identity. Your device. Your key. Circle ID replaces passwords with something you already carry—your phone. Sign in to apps and websites with passkeys, fill credentials in a single tap, and protect everything behind Face ID. No passwords to remember, reuse, or leak. Why Circle ID • Passwordless sign-in — Log in with modern passkeys instead of passwords. Faster, and far harder to phish. • One-tap AutoFill — Circle ID plugs directly into iOS AutoFill, so your credentials appear right where you need them, in any app or in Safari. • Face ID protection — Your vault unlocks only for you. Biometric security guards every credential on your device. • Set up in seconds — Scan a QR code to connect. No lengthy forms, no friction. • Strong encryption — Your keys and credentials are protected with modern cryptography, secured on your device. • Cross-device sign-in — Approve logins securely across your devices when you need to. Built for the way you actually log in Passwords are the weakest link in security—forgotten, reused, and stolen millions of times a day. Circle ID is built on the passkey standard to make that problem disappear. Your credentials live on your device, unlocked by your face, and shared only with your explicit approval. Whether you're signing in to your favorite app, your workplace, or a website in Safari, Circle ID makes it effortless and secure. You are the key. Download Circle ID and leave passwords behind.

Screenshots

iodyne4 screens
Circle ID4 screens

Verdict

The call

The clearest difference is ratings volume: iodyne at 5 against Circle ID's 1. Circle ID's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, rating, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for iodyne against 5.0 for Circle ID. That said, the two scores are not equally well evidenced: iodyne has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 6 level
iodyne versus Circle ID: the parameters behind the verdict, then further details
ParameteriodyneCircle ID
PriceFreeFree
Rating5.0 (5 ratings)5.0 (1 ratings)
Number of ratings5 — better1
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size50 MB69 MB
Age rating4+4+
Developeriodyne, LLCCircle Systems

Customer experience

iodyne

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Circle ID

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iodyne

No in-app purchases

None

Circle ID

No in-app purchases

Questions

Is iodyne free?
iodyne is free to download, with no in-app purchases.
Is Circle ID free?
Circle ID is free to download, with no in-app purchases.
Which has better reviews, iodyne or Circle ID?
iodyne and Circle ID are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.
Do iodyne or Circle ID have ads?
Neither iodyne nor Circle ID shows ads.
Which is updated more often, iodyne or Circle ID?
iodyne ships an update every 3 weeks, and Circle ID every 3 weeks. Most recently, iodyne was updated on October 28, 2026 and Circle ID on October 24, 2026.

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