Comparison

Custom Observer App vs HappyWhale

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

Head to head
About

Custom Observer App

Features
Read full description

The Custom Observer app, enables data collection using standard methods and protocols to produce credible and actionable insights that address needs and priorities of communities for environmental and ecological monitoring. Our mission is to empower communities to lead in environmental monitoring and research by branding their own app environment in which they can combine diverse data collection methods to drive effective ecosystem stewardship and resource management. The Custom Observer App is a modern approach to caring for and stewarding the land. Data collection priorities are set by communities and collaborating researchers and can range from environmental data related to extreme weather events such as wind speed or storm surge, or ecological indicators such as species distribution and phenology, presence of invasive species or declines in important subsistence species. The app supports the employment of rigorous protocols for data validity and reliability, blending scientific and social methodologies. Moreover, the app supports the assurance of data accuracy by providing detailed quality assurance and control mechanisms. The Custom Observer app is the technical infrastructure for community networks to lead in defining research priorities, generating and managing access to data equitably, and ensuring that future ecological and environmental monitoring strategies, all while also enabling community networks to apply their own branding and look and feel to the app. The Custom Observer App’s core function is to support the implementation of community-driven monitoring programs. Data Collection Programs are sets of related observation activities that group various data collection forms/surveys. The Programs module in the app organizes data collection forms, users, and observations into manageable categories for a defined network of communities and organizations. On the app, an ‘observation’ is a single data point collected in a survey/form related to certain species, environmental variables or events at a specific point in space and time within a data collection program. The mobile app supports the entry of observations while offline, making the system ideal for use in remote areas and tribal communities. The data from observations go through quality assurance and are used in analysis and reporting. Geospatial and mapping functionality supports program effectiveness by allowing users to use relevant GIS map layers and maintain a spatially organized context to their data, contributing to more comprehensive record keeping and informed decision-making.

About

HappyWhale

Receive AI-powered notifications that offer comfort and allow you to create personalized reminders. This utility app aims to enhance your daily experience by filtering out unwanted ads and providing a more tailored notification system.

Highlights
  • AI-powered notifications
  • Personalized reminder creation
  • Ad-free experience
  • Comforting notifications
Features
Read full description

Skip the ads. Get comfort with AI app notifications, and create the reminders you truly want.

Screenshots

Custom Observer App4 screens
HappyWhale4 screens

Verdict

The call

The clearest difference is ads: Custom Observer App at none against HappyWhale's shown. Custom Observer App also leads on update cadence (every 3 weeks vs every 2 months). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Custom Observer App ships an update every 3 weeks, HappyWhale every 2 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 7 level
Custom Observer App versus HappyWhale: the parameters behind the verdict, then further details
ParameterCustom Observer AppHappyWhale
PriceFreeFree
Rating—1.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size151 MB45 MB
Age rating17+4+
DeveloperAleut Community of St. Paul Island Tribal GovernmentTown Studio

In-app purchases

None

Custom Observer App

No in-app purchases

None

HappyWhale

No in-app purchases

Questions

Is Custom Observer App free?
Custom Observer App is free to download, with no in-app purchases.
Is HappyWhale free?
HappyWhale is free to download, with no in-app purchases.
Do Custom Observer App or HappyWhale have ads?
HappyWhale shows ads; Custom Observer App does not.
Which is updated more often, Custom Observer App or HappyWhale?
Custom Observer App ships an update every 3 weeks, and HappyWhale every 2 months. Most recently, Custom Observer App was updated on October 30, 2026 and HappyWhale on October 24, 2026.

Other comparisons