Comparison

Precision Dosing vs ReefATLAS PAR Estimator

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

Head to head
About

Precision Dosing

Automate nutrient delivery for equipment with precise control. This application simplifies the process of adding nutrients, significantly reducing feeding complexity.

Highlights
  • Precision dosing control
  • Automated nutrient addition
  • Equipment integration
  • Reduced feeding difficulty
  • User-friendly interface
Features
Read full description

This app can control the precision dosing.Set the corresponding value to make the equipment automatically add nutrients. It greatly reduces the difficulty of feeding

About

ReefATLAS PAR Estimator

This app helps reef aquarium enthusiasts estimate and visualize light distribution without a PAR meter. It allows users to input tank dimensions, lighting equipment, and water conditions to predict PAR levels and make informed decisions about coral placement and lighting setups. The tool offers interactive 3D visualizations and supports a wide range of popular reef lighting systems.

Highlights
  • Interactive 3D PAR heatmap visualization
  • Support for popular reef aquarium lighting systems
  • Multi-fixture light array setup
  • Fixture placement and angle controls
  • Spectrum and intensity adjustment tools
  • Custom tank dimension configuration
  • Surface agitation and lid modeling
Features
Read full description

ReefATLAS PAR Estimator is a subscription-based aquarium lighting analysis app built for reef keepers who want a smarter way to estimate light levels without always having access to a PAR meter. Designed for reef aquarium hobbyists and professionals, ReefATLAS PAR Estimator helps predict and visualize PAR distribution using tank dimensions, lighting equipment, mounting height, spectrum settings, fixture intensity, water conditions, lid transmission, surface agitation, and other key variables. The goal is simple: help reef keepers make better lighting and coral placement decisions before guessing, moving coral blindly, or copying someone else’s lighting schedule from a different setup. FEATURES • Interactive 3D PAR heatmap visualization • Support for popular reef aquarium lighting systems • Multi-fixture light array setup • Fixture placement using a top-down tank layout • Support for mixed light models in the same setup • Individual fixture height, position, rotation, and angle controls • Master/slave light grouping for linked fixtures • Spectrum and intensity adjustment tools • Manufacturer-style spectrum presets where available • Custom tank dimension configuration • Manufactured tank catalog support • Glass thickness and internal dimension calculations • Surface agitation / shimmer adjustment • Lid type and lid cleanliness modeling • Salinity-aware estimate adjustment • Project save and load functionality • Local device-based project storage • Optimized for reef aquarium planning and coral placement SUPPORTED LIGHTS ReefATLAS PAR Estimator includes modeled profiles for many popular reef lights, including AquaIllumination, EcoTech Marine, Kessil, Red Sea, ReefBreeders, Maxspect, Fluval, Illumagic, REEFi, Orphek, Philips CoralCare, NavaReef, Noo-Psyche, GHL, Current USA, and more. View the current supported light list here: https://thereefatlas.com/par-estimator-lights New lights and tanks are added regularly. If your light or tank is not listed, the app includes request buttons so you can send it in for review. Requested lights are prioritized for modeling when enough manufacturer/spec/PAR reference data is available. HOW IT WORKS Configure your aquarium dimensions, select your lighting equipment, adjust fixture placement, mounting height, spectrum, intensity, water conditions, and lid settings, then generate a 3D PAR distribution estimate throughout the aquarium. For single-light setups, quickly model one fixture over your tank. For advanced systems, the Light Setup tool lets you place multiple fixtures across a top-down tank grid, including mixed models, different mounting heights, fixture rotation, and angled mounting. The estimator calculates each fixture’s contribution at each point in the aquarium and combines overlapping light output to create the final PAR estimate. This helps represent real-world multi-light setups where beams overlap, spread, and converge across the tank. IMPORTANT ACCURACY NOTE ReefATLAS PAR Estimator is an estimation tool. A real PAR meter will always be the most accurate option for measuring your specific tank. However, many reef keepers do not have access to a PAR meter. This app is designed to provide a better starting point than guessing by combining modeled light profiles, tank dimensions, fixture placement, spectrum settings, mounting height, water depth, lid transmission, salinity, and surface agitation into one interactive estimate. Accuracy depends on available fixture data, setup inputs, and real-world variables such as rockwork, coral shading, water clarity, lens condition, and surface movement. SUBSCRIPTION REQUIRED ReefATLAS PAR Estimator requires an active monthly subscription to access and use the app. A subscription purchase is required to use the PAR estimation tools and features shown in the App Store screenshots and description. Privacy Policy: https://thereefatlas.com/privacy Terms of Use: https://thereefatlas.com/terms

Screenshots

Precision Dosing4 screens
ReefATLAS PAR Estimator4 screens

Verdict

The call

The clearest difference is in-app purchases: Precision Dosing at none against ReefATLAS PAR Estimator's 1. ReefATLAS PAR Estimator's advantage is update cadence (daily vs every 44 months) and device support (3 vs 1). On price, rating, ratings volume 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. ReefATLAS PAR Estimator sells 1 in-app purchase, starting at $4.99 per month. Precision Dosing asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Precision Dosing against 5.0 for ReefATLAS PAR Estimator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Precision Dosing ships an update every 44 months, ReefATLAS PAR Estimator daily. Both last shipped on October 1, 2026.

Scorecard5 real differences · 4 level
Precision Dosing versus ReefATLAS PAR Estimator: the parameters behind the verdict, then further details
ParameterPrecision DosingReefATLAS PAR Estimator
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 44 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.614.0 — better
Further details — not scored
Size5 MB27 MB
Age rating4+4+
Developer华 李JONATHAN ALBERT PITTMAN

Customer experience

Precision Dosing

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

ReefATLAS PAR Estimator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Precision Dosing

No in-app purchases

1 purchases

ReefATLAS PAR Estimator

Subscriptions1
  • ReefATLAS PAR Estimator Monthly$4.991 Month

Questions

Is Precision Dosing free?
Precision Dosing is free to download, with no in-app purchases.
Is ReefATLAS PAR Estimator free?
ReefATLAS PAR Estimator is free to download, with in-app purchases available.
Which has better reviews, Precision Dosing or ReefATLAS PAR Estimator?
Precision Dosing and ReefATLAS PAR Estimator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Precision Dosing or ReefATLAS PAR Estimator have ads?
Neither Precision Dosing nor ReefATLAS PAR Estimator shows ads.
Which is updated more often, Precision Dosing or ReefATLAS PAR Estimator?
Precision Dosing ships an update every 44 months, and ReefATLAS PAR Estimator daily. Most recently, Precision Dosing was updated on October 1, 2026 and ReefATLAS PAR Estimator on October 1, 2026.

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