Comparison

Evap Cooler vs Roost

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

Head to head
About

Evap Cooler

Assess the performance and water usage of your evaporative cooler. This app provides crucial data for homeowners considering installing a new unit, helping you make a well-informed decision.

Highlights
  • Performance assessment
  • Water usage tracking
  • Informed purchasing decisions
  • Economical cooling alternative information
Features
Read full description

Evaporative coolers can be an economical alternative for cooling your home. The Evap Cooler app can be used to determine how well your evaporative cooler is performing and how much water it is using. Additionally, if you are considering installing an evaporative cooler, the app can give you valuable information so that you can make an informed decision.

About

Roost

Features
Read full description

Roost is a private logbook for backyard chicken keepers. Log the eggs you collect in a couple of taps, keep a record of every hen and flock, and, if you sell eggs, find out whether your flock is paying for itself. No account needed, and nothing is ever sent to us. TRY IT FREE FOR A WEEK Start a free one-week trial and the whole app is yours, every feature, no limits. Nothing is charged during the trial and you can cancel it in your iPhone Settings at any point. If you keep going after that, Roost Pro is a monthly or yearly plan, or a one-time lifetime payment. WHY KEEPERS CHOOSE ROOST • Log today's eggs in seconds, or backdate any day you missed • Your records live on your phone and survive app updates. Nothing is lost, nothing is uploaded • Works fully offline, even at the far end of the yard with no signal • No account, no sign-up, no analytics KEEP YOUR FLOCK IN ORDER • Add flocks and individual birds, with photos and notes • Tap which hens laid to build your top-layers list • See eggs today, this week, this month, and all time at a glance • A simple trend so you can spot when laying slows WHAT ROOST PRO INCLUDES • Logging flocks, birds and eggs, with no limits • Track feed, bedding, vet and equipment costs • Log egg sales, pack sizes and the customers who buy them • Know your real cost per egg and your profit • See eggs on hand, updated as you collect and sell • Monthly production charts and your top-laying hens • Export everything to a spreadsheet, and back up your data Everything you've already logged stays yours to view, export and back up, whether or not you keep Pro. Roost is a logbook, not a vet. It keeps the records you enter; it does not give advice about keeping chickens. Made in Ireland by Bramble Apps. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://brambleapps.com/roost/privacy-policy

Screenshots

Evap Cooler4 screens
Roost4 screens

Verdict

The call

The clearest difference is in-app purchases: Evap Cooler at none against Roost's 3. Evap Cooler also leads on update cadence (daily vs every 2 weeks). On price, ads, 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. Roost sells 3 in-app purchases, starting at $3.39 per month. Evap Cooler asks for nothing beyond the download.

UpkeepUpdate frequency

Evap Cooler ships an update daily, Roost every 2 weeks. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 7 level
Evap Cooler versus Roost: the parameters behind the verdict, then further details
ParameterEvap CoolerRoost
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyDaily — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size74 MB29 MB
Age rating4+4+
DeveloperLawson Mechanical Engineering LLCRuth McCarthy

In-app purchases

None

Evap Cooler

No in-app purchases

3 purchases

Roost

Subscriptions2
  • Roost Pro Monthly7 Days trial$3.391 Month
  • Roost Pro Yearly7 Days trial$14.901 Year
One-time1
  • Roost Pro Lifetime$26.49

Questions

Is Evap Cooler free?
Evap Cooler is free to download, with no in-app purchases.
Is Roost free?
Roost is free to download, with in-app purchases available.
Do Evap Cooler or Roost have ads?
Neither Evap Cooler nor Roost shows ads.
Which is updated more often, Evap Cooler or Roost?
Evap Cooler ships an update daily, and Roost every 2 weeks. Most recently, Evap Cooler was updated on November 3, 2026 and Roost on November 10, 2026.

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