# Percent-O — Numerical Reasoning & Aptitude

> Numerical Reasoning & Aptitude (iPhone/iPad app by Marc Picco.)

- Source: https://appshunter.io/ios/app/percent-o/id6756480336 (this page in markdown: same URL + `.md`)
- Developer: [Marc Picco](https://appshunter.io/developer/1854376029)
- Category: Education, Business
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.1 · 7 MB
- Languages: American English
- Released: 2025-12-17
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/percent-o/id6756480336/reviews.md

## What is Percent?

Master the data interpretation skills needed for corporate aptitude tests. Percent-O provides infinite, realistic practice for numerical reasoning exams.

Infinite Practice Procedurally generated exam sessions ensure you never see the same question twice. Memorization won't work; you must master the logic.

Realistic Data Analyze complex tables including Revenue, Headcount, and Exchange Rates under strict time limits.

Trap Training Learn to identify specific "distractor" answers designed to trick you, including:

Denominator Errors: Using the wrong base year.

Unit Errors: Missing the "thousands" multiplier.

Data Sufficiency: Recognizing when an answer "Cannot be calculated."

Professional Scoring Receive a Stanine Score (1–9) and a breakdown of your accuracy and speed, matching the grading standards used by employers.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2025-12-18

No release notes.

## More apps by Marc Picco

- [Feel-O](https://appshunter.io/ios/app/feel-o/id6755522177)

All apps by Marc Picco: https://appshunter.io/developer/1854376029

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*