Comparison

Unit Converter Max vs Optio

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

Head to head
About

Unit Converter Max

This app offers fast and accurate conversions for over 30 unit categories and 150 world currencies. It features a clean interface, offline functionality, and light/dark modes, designed for travel, work, and everyday calculations.

Highlights
  • 30+ unit categories
  • 150+ world currencies
  • Offline unit conversion
  • Clean, easy-to-read interface
  • Light and dark mode
  • Fast and accurate results
Features
Read full description

Unit Converter Max Convert units and currencies faster. Unit Converter Max is a clean and accurate converter with 30+ unit categories and 150+ world currencies. No ads. No subscriptions. Lifetime access with a single purchase. Designed for travel, work, study, cooking, engineering, shopping, and everyday calculations. Convert Everything You Need • Length, mass, temperature, area, and volume • Speed, pressure, energy, time, and data • Power, frequency, voltage, fuel economy, and torque • Angle, force, density, current, resistance, and more • 150+ world currencies for travel and daily use Key Features • Fast and accurate results • 30+ unit categories • 150+ supported currencies • Clean, easy-to-read interface • Offline unit conversion • Light and dark mode • Built for everyday and professional use Why Users Choose Unit Converter Max - All Units Most converter apps are slow, cluttered, or filled with ads. Unit Converter Max - All Units keeps it simple: open the app, choose a unit or currency, and get the answer fast. Support & Legal Contact: support@richsoft.app Privacy Policy: https://richsoft.app/snapunit/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Optio

This app helps you make decisions with customizable wheels and quick random tools like coin flips and dice rolls. Enjoy a unique cyberpunk aesthetic and share results via QR codes. It offers a fun and fair way to resolve everyday choices.

Highlights
  • Customizable decision wheels
  • Random number generator
  • Coin flip and dice roll tools
  • Secret magic mode for influencing outcomes
  • Cyberpunk and neon aesthetics
  • QR code sharing of results
Features
Read full description

Optio turns "I can't decide" into a game. Stuck on where to eat, what to watch, or who does the dishes? Optio gives you a whole toolbox — from pure fun to smart AI — to settle any choice fast. SPIN THE WHEEL Add your options and let the wheel decide. Export the spin as a vertical video with confetti and share it anywhere. OPSIS AI Can't even think of the options? Ask Opsis. Our AI instantly generates a smart, tailored list — and can even weigh the pros and cons for you. PROS, CONS & WEIGHTS For the choices that matter, list pros and cons or assign weights so the odds match your gut. DECIDE TOGETHER — LIVE ROOMS Create a room, invite friends, everyone swipes, and Optio finds the match. Perfect for group dinners, trips, and movie nights. QUICK TOOLS Coin flip, dice roll, number and letter pickers, and more — a one-tap answer whenever you need it. SEALED DECISIONS Lock in a choice now and reveal it later. Optio reminds you when the time comes. STREAKS & ENERGY Build a daily decision streak, complete quests, and earn energy to power Opsis. HOME-SCREEN WIDGETS Your streak and a quick decision, one tap from the home screen. 9 LANGUAGES English, Türkçe, Español, Français, Русский, 한국어, العربية, 简体中文, 繁體中文. PREMIUM Unlock unlimited lists, weighted options, decision history, magician mode, and a monthly pool of Opsis neural credits with Optio Pro — monthly or yearly. Download Optio and never get stuck on a decision again. — Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use and Privacy Policy links are available in the app and on the product page. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Unit Converter Max4 screens
Optio4 screens

Verdict

The call

The clearest difference is rating: Unit Converter Max at 5.0 against Optio's 3.0. Unit Converter Max also leads on monetization model (free vs freemium) and ratings volume (26 vs 2). Optio's advantage is update cadence (every 9 days vs every 3 weeks). 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. Unit Converter Max sells 1 one-off in-app purchase and Optio sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Unit Converter Max holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Unit Converter Max has 26 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Unit Converter Max ships an update every 3 weeks, Optio every 9 days. Both last shipped on November 5, 2026.

Scorecard4 real differences · 6 level
Unit Converter Max versus Optio: the parameters behind the verdict, then further details
ParameterUnit Converter MaxOptio
PriceFreeFree
Rating5.0 (26 ratings) — better3.0 (2 ratings)
Positive reviews87.5% of reviews—
Number of ratings26 — better2
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size36 MB20 MB
Age rating4+4+
DeveloperRich Soft Co., LtdHAKAN OZGER

Customer experience

Unit Converter Max

All ratings26 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

Optio

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

1 purchases

Unit Converter Max

One-time1
  • All Converter Lifetime$4.99
4 purchases

Optio

Subscriptions2
  • Optio Pro (Monthly)$2.991 Month
  • Optio Pro (Yearly)$17.991 Year
One-time2
  • 50 Neural Energy$2.99
  • 50 Neural Energy$5.99

Questions

Is Unit Converter Max free?
Unit Converter Max is free to download, with in-app purchases available.
Is Optio free?
Optio is free to download, with in-app purchases available.
Which has better reviews, Unit Converter Max or Optio?
Unit Converter Max is rated higher. Unit Converter Max averages 5.0 out of 5 from 26 ratings, while Optio averages 3.0 from 2 ratings.
Do Unit Converter Max or Optio have ads?
Neither Unit Converter Max nor Optio shows ads.
Which is updated more often, Unit Converter Max or Optio?
Unit Converter Max ships an update every 3 weeks, and Optio every 9 days. Most recently, Unit Converter Max was updated on November 5, 2026 and Optio on November 5, 2026.

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