Comparison

Quantum Aqua vs 4 The Tradie

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

Head to head

Tradie client blacklist

Free

🔧 Utilities

No ratingsView app →

About

Quantum Aqua

Features

Read full description

The Quantum Aqua app is designed to be a free, easy-to-use resource for aquarium hobbyists to use Quantum products.

About

4 The Tradie

Features

Read full description

4 The Tradie is the community blacklist app built for Australian tradies. Search clients before you quote, read reports from other tradies, and add your own bad experiences to protect the trade community. Free users get 3 client lookups per day. Upgrade to Tradie Pro for unlimited lookups, full report details, and contact phone numbers. FEATURES: • Search clients by name or phone number • Read reports submitted by other tradies • Add your own client reports • Tradie Pro: unlimited lookups + full report access Built by tradies, for tradies. Protect yourself before you start the job. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Quantum Aqua4 screens

4 The Tradie4 screens

Verdict

The call

The clearest difference is in-app purchases: Quantum Aqua at none against 4 The Tradie's 1. Quantum Aqua also leads on iOS requirement (13.0 vs 15.1). 4 The Tradie's advantage is update cadence (daily vs every 4 weeks). On price, ads 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. 4 The Tradie sells 1 in-app purchase, starting at $9.99 per month. Quantum Aqua asks for nothing beyond the download.

UpkeepUpdate frequency

Quantum Aqua ships an update every 4 weeks, 4 The Tradie daily. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 3 level

Quantum Aqua versus 4 The Tradie: the parameters behind the verdict, then further details
Parameter	Quantum Aqua	4 The Tradie
Price	Free	Free
Update frequency	Every 4 weeks	Daily — better
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	13.0 — better	15.1
Further details — not scored
Size	187 MB	50 MB
Age rating	4+	4+
Developer	Jordan Kambanis	EVAN PHILIP SMITH

In-app purchases

None

Quantum Aqua

No in-app purchases

1 purchases

4 The Tradie

Subscriptions1

Tradie Pro$9.991 Month

Questions

Is Quantum Aqua free?

Quantum Aqua is free to download, with no in-app purchases.

Is 4 The Tradie free?

4 The Tradie is free to download, with in-app purchases available.

Do Quantum Aqua or 4 The Tradie have ads?

Neither Quantum Aqua nor 4 The Tradie shows ads.

Which is updated more often, Quantum Aqua or 4 The Tradie?

Quantum Aqua ships an update every 4 weeks, and 4 The Tradie daily. Most recently, Quantum Aqua was updated on November 4, 2026 and 4 The Tradie on November 5, 2026.