Comparison

Fish Tank Log vs PadVitals

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

Head to head
About

Fish Tank Log

This app helps aquarium enthusiasts track and manage their tanks. Log water parameters, schedule maintenance reminders, and record tank activities. An AI assistant provides guidance and answers questions to ensure consistent aquarium care.

Highlights
  • Create profiles for multiple tanks
  • Track water parameters with charts
  • Set maintenance reminders
  • Log tank activities chronologically
  • AI assistant for guidance and questions
  • Support for freshwater, saltwater, planted, and shrimp tanks
Features
Read full description

Fish Tank Log is a simple yet powerful aquarium tracker designed for freshwater, saltwater, planted, and shrimp tanks. Whether you manage one aquarium or several, Fish Tank Log helps you stay organized, log tank activity, and maintain consistent care routines. The app also includes an in app AI assistant that can guide you through tasks, answer questions, and help you stay on top of your aquarium with confidence. Aquarium Profiles:
 Create profiles for each tank and record livestock, equipment, and notes in one place so your aquarium information stays organized and easy to reference. Water Parameter Tracking: 
Log parameters such as pH, ammonia, nitrite, nitrate, temperature, and more while viewing charts to understand trends and maintain stable conditions. Maintenance Reminders:
 Set reminders for water changes, filter cleaning, dosing, and other recurring tasks to help keep your aquarium care routine consistent. Activity Log:
 Track feedings, livestock additions, observations, and maintenance events in a chronological timeline that captures the full history of your tank. Multi Tank Support:
 Manage multiple aquariums without switching apps or workflows, making Fish Tank Log useful for hobbyists with several tanks or breeding setups. Subscription Information: Creating unlimited tank profiles and accessing advanced features may require a subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For questions or inquiries contact: info@fishtanklog.com

About

PadVitals

Features
Read full description

See what your connected game controller is doing, right now. PadVitals shows the buttons, sticks, triggers, rumble and sensors of a controller connected to your iPhone / iPad in real time, and measures stick drift and circularity as numbers. Note: this app does not diagnose or certify the controller hardware itself. It measures and visualizes the input data that iOS received on this device. ■ Try it before you connect anything - No compatible controller at hand? Demo mode walks through every screen — button lights, stick trails, each diagnosis and the report — so you can see what the app does right away - The values shown in demo mode are fictional (they are not measurements from a real device) ■ Real-time view - Pressed buttons light up on a schematic, and stick movement leaves a glowing trail - Raw stick / trigger values, motion (gyroscope and accelerometer) and battery level, all in one list - Values standing still is normal. GameController delivers input only when something changes ■ A guided diagnosis - Drift ... how far the center wanders once you take your fingers off - Circularity ... spin the stick around once, and the reach at each angle is compared - Input event delivery rate / jitter ... the effective rate of the input that reached the app, and how steady the intervals are (measured on iOS) - Trigger slack ... where the response starts - Rumble and core button response checks The input event delivery rate is not the polling rate of the controller itself. It is the input that reached the app, shaped by the Bluetooth connection interval and by scheduling on the iOS side. ■ Follow the wear over time - Results are kept on the device per controller, so the numbers show how things are trending ■ A report you can share - The result fits on a single image, ready to post ■ Supported controllers - DualSense / DualSense Edge / DualShock 4 - Xbox Wireless / Elite Series 2 - MFi controllers - Apple has not stated support for Nintendo Switch Pro / Joy-Con, so those may or may not work ■ Pricing - Free to use, with ads kept modest - Ad removal is a one-time purchase (non-consumable), not a monthly subscription. Purchases can be restored from Settings ■ Privacy and terms - Diagnosis results and history are stored on this device only. Diagnostic data is never sent to an external server - Privacy policy: https://padvitals-lab.web.app/en/privacy - Terms of use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Requires iOS 17 or later.

Screenshots

Fish Tank Log4 screens
PadVitals4 screens

Verdict

The call

The clearest difference is in-app purchases: PadVitals at none against Fish Tank Log's 3. Fish Tank Log's advantage is update cadence (every 2 weeks vs monthly) and device support (3 vs 1). On price and ads 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. Fish Tank Log sells 3 in-app purchases, starting at $3.99 per month. PadVitals asks for nothing beyond the download.

UpkeepUpdate frequency

Fish Tank Log ships an update every 2 weeks, PadVitals monthly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Fish Tank Log versus PadVitals: the parameters behind the verdict, then further details
ParameterFish Tank LogPadVitals
PriceFreeFree
Rating5.0 (6 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size48 MB8 MB
Age rating4+4+
DeveloperToolit Media LLCHiroki Nakayama

In-app purchases

3 purchases

Fish Tank Log

Subscriptions3
  • Fish Tank Log Pro3 Days trial$3.991 Month
  • Fish Tank Log Pro$19.991 Year
  • Fish Tank Log Pro$29.991 Year
None

PadVitals

No in-app purchases

Questions

Is Fish Tank Log free?
Fish Tank Log is free to download, with in-app purchases available.
Is PadVitals free?
PadVitals is free to download, with no in-app purchases.
Do Fish Tank Log or PadVitals have ads?
Neither Fish Tank Log nor PadVitals shows ads.
Which is updated more often, Fish Tank Log or PadVitals?
Fish Tank Log ships an update every 2 weeks, and PadVitals monthly. Most recently, Fish Tank Log was updated on November 5, 2026 and PadVitals on October 31, 2026.

Other comparisons