Comparison

Undertone Beauty vs I.O.

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

Head to head
About

Undertone Beauty

A professional workflow app for makeup artists that combines undertone support, intelligent product recommendations, and client organization. It helps artists manage client details, track product usage, and plan future events with precision and confidence.

Highlights
  • Undertone analysis and recommendations
  • Client organization and notes
  • Product tracking
  • Personalized artistry tools
  • Event planning
Features
Read full description

Beauty intelligence designed for how artists actually work. Undertone Beauty is a professional workflow app for makeup artists — combining undertone support, intelligent recommendations, client organization, and personalized artistry tools into one connected system. Scan your client or enter undertone manually to receive curated recommendations aligned with undertone, color season, and the products already in your kit. Save products used, notes, images, preferences, trial details, and upcoming events — all in one place. Built to support modern artistry workflows with more precision, continuity, and confidence. Because professional artistry deserves professional tools. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://undertoneapp.io/undertone-legal/privacy/index.html

About

I.O.

Features
Read full description

IO is an AI-human intelligence network - where user posts are discovered as part of your AI chats - letting you obtain a human input alongside AI output - while offering you an option to get discovered by sharing your knowledge with others. Just use our AI chat as you otherwise would - and use your account to post on any topic in order to be discovered in others' query-relevant AI chats. IO includes: - AI chatbot - a user oriented AI chat assistant able to generate input on any topic and include useful-only user posts - User account - your custom page with option to add info, upload posts, chat 1-on-1 with other users and a lot more - Units - join or create a unit and invite up to 100 other users to chat and share insights - Lounges - join or create a lounge and let thousands of others join and share in any interest Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://www.ioui.io/legal/privacy

Screenshots

Undertone Beauty4 screens
I.O.4 screens

Verdict

The call

The clearest difference is update cadence: I.O. at every 2 days against Undertone Beauty's monthly. 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. Undertone Beauty sells 2 in-app purchases, starting at $20.00 per month and I.O. sells 1 in-app purchase, starting at $10.00 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Undertone Beauty ships an update monthly, I.O. every 2 days. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.

Scorecard1 real difference · 8 level
Undertone Beauty versus I.O.: the parameters behind the verdict, then further details
ParameterUndertone BeautyI.O.
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyMonthlyEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size41 MB34 MB
Age rating4+12+
DeveloperUndertone Beauty Inc.IO.OI. Inc.

In-app purchases

2 purchases

Undertone Beauty

Subscriptions2
  • Undertone Pro Monthly1 Month trial$20.001 Month
  • Undertone Pro Yearly$199.001 Year
1 purchases

I.O.

Subscriptions1
  • IO Pro$10.001 Month

Questions

Is Undertone Beauty free?
Undertone Beauty is free to download, with in-app purchases available.
Is I.O. free?
I.O. is free to download, with in-app purchases available.
Do Undertone Beauty or I.O. have ads?
Neither Undertone Beauty nor I.O. shows ads.
Which is updated more often, Undertone Beauty or I.O.?
Undertone Beauty ships an update monthly, and I.O. every 2 days. Most recently, Undertone Beauty was updated on October 28, 2026 and I.O. on November 5, 2026.

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