Comparison

Pass 2 vs Aquadex

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

Head to head
About

Pass 2

A quick and convenient note-taking application that offers secure storage and easy retrieval of your entries. It supports scanning codes and rich text editing for enhanced note creation.

Highlights
  • Quick and convenient note-taking
  • Secure storage and easy viewing
  • Supports code scanning for notes
  • Rich text editing
Features
Read full description

Pass - 方便快捷记录笔记 功能: √ 方便快捷,想记就记 √ 安全存储,方便查看 √ 支持扫码记录 √ 富文体编辑支持

About

Aquadex

Features
Read full description

AquariumLog is a professional aquarium parameter management system designed for hobbyists who treat fishkeeping as a science. PARAMETER TRACKING • 6-parameter water test log: pH, NH3 (ammonia), NO2 (nitrite), NO3 (nitrate), temperature, salinity • Threshold-based status engine — automatic safe / warning / danger classification per parameter • Per-tank historical record with reverse-chronological access ANALYTICS • pH trend chart with ideal-line overlay (7.0 reference) • Nitrogen cycle chart — ammonia, nitrite, nitrate plotted together • Temperature chart with ideal range (78°F) • Days-running counter, test count, care log count, fish census CARE WORKFLOW 9 care types: water change (with gallons logged), feeding (with food type), filter cleaning, glass cleaning, gravel vacuum, equipment check, algae removal, plant trimming, other. TANK & LIVESTOCK MANAGEMENT • 7 tank type presets — freshwater, saltwater, brackish, planted, betta, goldfish, cichlid • Capacity tracking in gallons • Fish & invertebrate inventory with name, species, date added, alive/deceased status • Per-tank notes DATA OWNERSHIP • Built on SwiftData (Apple native persistence) • 100% on-device storage — no cloud sync, no account, no telemetry • One-tap JSON export of all tanks, tests, logs and livestock • Zero network calls, zero third-party SDKs PLATFORM • iOS 17+ / iPhone-only • Native SwiftUI, optimized for the latest iPhones • Built-in iOS Charts framework If you keep precise records, run controlled water changes, and want to see your nitrogen cycle in graphs — this is your tool.

Screenshots

Pass 22 screens
Aquadex4 screens

Verdict

The call

The clearest difference is iOS requirement: Pass 2 at 15 against Aquadex's 17.0. 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 9 level
Pass 2 versus Aquadex: the parameters behind the verdict, then further details
ParameterPass 2Aquadex
PriceFreeFree
Rating3.5 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPod — betteriPhone
Requires iOS15 — better17.0
Further details — not scored
Size18 MB1 MB
Age rating4+4+
DeveloperShenZhen Yuyue Technology Co., Ltd.旭 王

In-app purchases

None

Pass 2

No in-app purchases

None

Aquadex

No in-app purchases

Questions

Is Pass 2 free?
Pass 2 is free to download, with no in-app purchases.
Is Aquadex free?
Aquadex is free to download, with no in-app purchases.
Do Pass 2 or Aquadex have ads?
Neither Pass 2 nor Aquadex shows ads.

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