Comparison

performify vs Collateral Appraisal

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

Head to head
About

performify

Features
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performify! - Calculations derived from the manufacturer's AFMs. Reverse engineered mathematical equations so that you don't have to draw, interpolate or calculate yourself! - Efficient workflow in mind. Designed for the pilot to make quick decisions or play with the numbers! - Widgets! - Automatically derived parameters, based on location and local weather - Dark Mode! - Add a preferred margin to every calculation! - Add a favourite aircraft variant for every aircraft make, to get started quicker. - Currently supports landing and take-off performance calculations. More to come! - Currently supports a number of aircraft such as: -Β Antonov AN2 - Cessna 152, 172, 172 R&S - Piper PA28-181 - Robin DR400/140B, DR400/180 - Tecnam P2008JC - More to come! IMPORTANT: !! DO NOT USE FOR PLANNING PURPOSES !! Reason: performify is not a certified or approved application by any organization or authority. Please do not use this app for planning purposes. Always cross verify the results with your AFM! By downloading this app you confirm that you use all calculations AT YOUR OWN RISK. Always check with the AFM. The developer nor the publisher are responsible for any damage caused by the use of the calculations." Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Collateral Appraisal

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Tired of manually collecting property details for appraisals? Collateral Appraisal simplifies the process! Key Features: - Create & manage collateral information: Easily capture basic property details and photos directly on your phone. - Generate professional PDF reports: Present a well-organized report for appraisers with a few clicks. - Share reports easily: Share your generated PDF reports via email or other apps with ease.

Screenshots

performify4 screens
Collateral Appraisal4 screens

Verdict

The call

The clearest difference is in-app purchases: Collateral Appraisal at none against performify's 1. Collateral Appraisal also leads on iOS requirement (14.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. performify sells 1 in-app purchase, starting at $2.99 per month. Collateral Appraisal asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 4, 2026 and September 30, 2026 respectively.

Scorecard2 real differences Β· 4 level
performify versus Collateral Appraisal: the parameters behind the verdict, then further details
ParameterperformifyCollateral Appraisal
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS17.014.0 β€” better
Further details β€” not scored
Size95 MB57 MB
Age rating4+17+
DeveloperPascal BurletChung-Wei Hung

In-app purchases

1 purchases

performify

Subscriptions1
  • AviatorPro1 Month trial$2.991 Month
None

Collateral Appraisal

No in-app purchases

Questions

Is performify free?
performify is free to download, with in-app purchases available.
Is Collateral Appraisal free?
Collateral Appraisal is free to download, with no in-app purchases.
Do performify or Collateral Appraisal have ads?
Neither performify nor Collateral Appraisal shows ads.
Which is updated more often, performify or Collateral Appraisal?
performify ships an update every 2 months, and Collateral Appraisal every 2 months. Most recently, performify was updated on October 4, 2026 and Collateral Appraisal on September 30, 2026.

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