Comparison

Automa Keychain vs Smart Unit Conversion

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

Head to head

Smart Unit Conversion

Simple, Smart, Local Units

Free

🔧 Utilities

No ratingsView app →

About

Automa Keychain

Features

Read full description

Applicazione Automa per la gestione degli accessi

About

Smart Unit Conversion

Features

Read full description

This is a smart unit convertor that: 1. Support 21 languages and the Local Units 2. You can Customize the Sequence of Units 3. European number format supported Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Automa Keychain4 screens

Smart Unit Conversion4 screens

Verdict

The call

The clearest difference is in-app purchases: Automa Keychain at none against Smart Unit Conversion's 1. Automa Keychain also leads on ads (none vs shown). Smart Unit Conversion's advantage is update cadence (every 15 months vs every 46 months). On price, device support and iOS requirement 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. Smart Unit Conversion sells 1 in-app purchase, starting at $1.99 per year. Automa Keychain asks for nothing beyond the download.

UpkeepUpdate frequency

Automa Keychain ships an update every 46 months, Smart Unit Conversion every 15 months. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

Scorecard3 real differences · 3 level

Automa Keychain versus Smart Unit Conversion: the parameters behind the verdict, then further details
Parameter	Automa Keychain	Smart Unit Conversion
Price	Free	Free
Update frequency	Every 46 months	Every 15 months — better
Ads	No — better	Yes
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	12.0 — better	13.4
Further details — not scored
Size	27 MB	41 MB
Age rating	4+	17+
Developer	Automa s.r.l.	Yui Lau

In-app purchases

None

Automa Keychain

No in-app purchases

1 purchases

Smart Unit Conversion

Subscriptions1

1 Year$1.991 Year

Questions

Is Automa Keychain free?

Automa Keychain is free to download, with no in-app purchases.

Is Smart Unit Conversion free?

Smart Unit Conversion is free to download, with in-app purchases available.

Do Automa Keychain or Smart Unit Conversion have ads?

Smart Unit Conversion shows ads; Automa Keychain does not.

Which is updated more often, Automa Keychain or Smart Unit Conversion?

Automa Keychain ships an update every 46 months, and Smart Unit Conversion every 15 months. Most recently, Automa Keychain was updated on November 11, 2026 and Smart Unit Conversion on November 7, 2026.